CN114593290A - A floating anti-dropping device for the female head of a quick-plug connector - Google Patents

Abstract

A floating anti-dropping device for the female head of a quick-plug connector, which solves the cumbersome plug-in operation that cannot be applied to unmanned automation in the prior art, and the liquid filling pressure inside the hydraulic device often causes the connecting parts of the male head and the female head of the pipeline to bounce off The situation affects the normal operation of the equipment and the production safety is poor. It includes a floating sleeve connected with the quick-plug female head, the floating sleeve is movably connected to the fixed ferrule of the quick-plug female head, the upper end of the floating sleeve is provided with a female head gland, and the hose connector of the quick-plug female head is connected via The middle through hole of the female gland extends to the outside of the floating sleeve; a female floating space is arranged between the upper end of the fixed ferrule 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 design is reasonable and the structure is compact, which can assist in the quick plug-in and disconnection of hydraulic pipelines, is suitable for automatic unattended plug-in operation, can effectively prevent the joints from being bounced off by the internal pressure, and is safe and reliable to use.

Description

A floating anti-dropping device for the female head of a quick-plug connector

technical field

The invention belongs to the technical field of hydraulic pipeline connection devices, in particular to a device that can assist in the quick plugging and disconnecting of hydraulic pipelines, is suitable for automatic unattended plugging and unplugging operations, can effectively prevent joints from being bounced off by internal pressure, and is safe to use. Reliable push-in connector female floating anti-drop device.

Background technique

At present, some quick-plug joints with the effect of instant cut-off, self-sealing and quick plug-in connection mostly adopt the structure of rotary locking, that is: one insertion and one rotation to complete the joint connection and locking; one rotation and one pull to complete the connection and locking. Coupling disconnected and tubing self-sealing. Although the connection action of this traditional structure is relatively simple, it cannot be applied to the cumbersome plug-in operation of unmanned automation, and it is difficult to meet the use requirements of automated production. In addition, in the actual application process, when the hydraulic cylinder is filled with liquid medium, due to the increase of internal pressure, the male and female joints of the pipeline often bounce off, which affects the normal use and operation of the equipment. Poor security. Therefore, it is necessary to improve the anti-dropping structure of the push-in connector in the prior art.

SUMMARY OF THE INVENTION

The present invention is aimed at the above problems, and provides a quick plug-in connection and disconnection of hydraulic pipelines, which is suitable for automatic unmanned plug-and-pull operation, can effectively prevent the joint from being bounced off by internal pressure, and uses a safe and reliable quick-plug joint. Female floating anti-drop device.

The technical scheme adopted in the present invention is: the floating anti-dropping device of the quick-plug female head includes a floating sleeve connected with the quick-plug female head, and is characterized in that: the floating sleeve is movably sleeved on the fixed position of the quick-plug female head On the ferrule, and the upper end of the floating sleeve is provided with a female gland, and the hose connector of the quick-plug female head protrudes to the outside of the floating sleeve through the middle through hole of the female gland, and is located in the floating sleeve. A female head floating space is arranged between the upper end of the inner fixed ferrule and the lower side of the female head gland; the lower end of the floating sleeve is fixedly connected with the male head guide seat.

The floating sleeve includes a sleeve body, the interior of the sleeve body is provided with a female floating connection cavity with an upper end open, the lower end of the sleeve body is provided with a male plug cavity, and the male plug cavity is connected with the female floating connection cavity A position-limiting convex edge is arranged between the floating connection cavity of the female head and the insertion cavity of the male head. The fixed ferrule of the quick-plug female is movably inserted into the floating connection cavity of the female socket of the floating sleeve, and the position of the lower end of the fixed ferrule is limited by the limiting lip, and the quick-plug male is passed through the sleeve. The male head inserting cavity at the lower end of the main body is inserted into the floating connection cavity of the female head and contacts with the quick-plug female head.

The female gland includes a gland body, the middle part of the gland body is provided with a connecting head via hole, and the periphery of the connecting head through hole and the gland body are provided with several groups of top surface connecting holes. Correspondingly, the floating sleeve Several groups of gland connection holes are arranged on the top surface of the upper end of the sleeve body of the pipe; the lower side of the connecting head of the female gland is provided with a floating limit flange, and the floating limit flange is located in the floating sleeve The female header of the tube floats inside the upper end of the connection cavity. The female gland is positioned and connected to the gland connecting hole on the top surface of the casing of the floating sleeve by using the connecting bolt set in the connecting hole on the top surface, and the lower side of the connecting head of the female gland is passed through the hole. The floating limit flange is used to limit the position where the fixed ferrule of the quick-plug female connector floats upward in the floating connection cavity of the female connector.

The female head gland adopts the structural form of separate assembly. In order to facilitate the installation and disassembly of the device, it is convenient to use.

The male guide seat includes a guide seat main body, the middle of the guide seat main body is provided with a cylindrical cavity, the upper end of the cylindrical cavity is provided with a sleeve connection hole with an upper end opening, and the lower end of the cylindrical cavity is provided with a lower end opening The trumpet-shaped cavity is connected with each other, and the trumpet-shaped cavity, the cylindrical cavity and the sleeve connecting hole are connected with each other; the guide seat main body is also provided with a guide seat connecting flange. In order to connect the floating sleeve with the sleeve connection hole at the upper end of the male guide seat, and in the process of mutual insertion of the quick-plug joints, the quick-plug male is inserted into the cylindrical cavity through the trumpet-shaped cavity opened at the lower end. The head is automatically straightened, which is convenient for the contact and insertion of the quick-plug male head and the quick-plug female head.

The lower end of the bushing connection hole is provided with a bushing positioning hole, and correspondingly, the lower end of the floating bushing is provided with a positioning plug. The positioning plug joint at the lower end of the floating sleeve is used to form a positioning connection with the sleeve positioning hole at the lower end of the sleeve connecting hole of the male guide seat.

The inner wall of the casing connection hole is provided with a casing connection inner thread, the outer wall of the floating casing is provided with a guide seat connection outer thread, and the upper part of the guide seat connection outer thread is also provided with a locking nut. The floating sleeve is fixedly connected to the sleeve connecting inner thread of the sleeve connecting hole of the male guide seat through the connecting external thread of the guide seat, and the position of the floating sleeve is fastened with a locking nut.

The quick-plug female head includes a female head body, one end of the female head body facing the quick-plug male head is provided with a movable ferrule, an extension end of the movable ferrule is provided with a fixed ferrule, and a fixed ferrule is arranged between the fixed ferrule and the movable ferrule There is a ferrule compression spring; the inside of the female head body is provided with a female head cavity, and both ends of the female head cavity are respectively provided with a female cavity liquid inlet and a female cavity liquid outlet, the female cavity inlet The male head at the liquid port is inserted into the cavity, and between the outer wall of the movable ferrule and the inner wall of the fixed ferrule, a locking steel ball and a limit ring are movably arranged; the liquid outlet of the female cavity is connected with the hose connector A mandrel fixing seat is arranged in the female head cavity of the female head main body, the mandrel fixing seat is fixedly arranged with a female head mandrel axially arranged along the female head main body, and the extension end of the female head mandrel is located in the inlet of the female head body. At the liquid port; inside the female head cavity and outside the female head mandrel, a limit core sleeve is set, and a limit compression spring is arranged between the limit core sleeve and the mandrel fixing seat; the limit core sleeve is A movable core sleeve is also sleeved on the outer side and at the liquid inlet of the mother cavity, and a movable compression spring is arranged between the movable core sleeve and the main body of the female head. Through the mutual extrusion contact between the male plug male head of the quick plug and the movable core sleeve of the quick plug female, the limiting core sleeve and the female mandrel are driven to separate and open; The mutual extrusion contact between the male head valve core and the female head mandrel of the quick-plug female head drives the female head mandrel to drive the female head main body and the movable ferrule and the fixed ferrule to move relative to each other, and the male head is inserted into the outer side of the convex head. The locking slot is connected with the locking steel ball movably arranged in the plug-in cavity of the male head, and further connects the cavity of the male head and the cavity of the female head to make the liquid medium circulate and realize the connection of the hydraulic pipeline.

The beneficial effects of the present invention are as follows: because the present invention adopts the floating sleeve connected with the quick-plug female head, the floating sleeve is movably connected to the fixed ferrule of the quick-plug female head, and the upper end of the floating sleeve is provided with a female head gland, The hose connector of the quick-plug female head protrudes to the outside of the floating sleeve through the middle through hole of the female head gland; located between the upper end of the fixed ferrule inside the floating sleeve and the lower side of the female head gland, set There is a floating space for the female head, and the lower end of the floating sleeve is fixedly connected to the male guide seat, so the design is reasonable and the structure is compact. The quick-plug female head can float properly in the axial direction, so that the quick-plug female head can be kept in a locked state without being affected by the pressure of the internal liquid medium during the plug-in connection with the quick-plug male head and the liquid supply process. Moreover, when the liquid supply ends and the male head and the female head are disconnected, the current interruption and sealing can be quickly completed to prevent the leakage of the liquid medium in the pipeline. The floating anti-dropping device of the female head of the push-in connector can assist in the quick plug-in and disconnection of the hydraulic pipeline, and is suitable for automatic unmanned plug-in operation. In various construction machinery industries including the automatic handling of coal mine support devices.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the male guide seat in FIG. 1 .

FIG. 3 is a schematic structural diagram of the floating sleeve in FIG. 1 .

FIG. 4 is a plan view of FIG. 3 .

FIG. 5 is a schematic structural diagram of the female head gland (separate assembly structure) in FIG. 1 .

FIG. 6 is a bottom view of FIG. 5 .

FIG. 7 is a schematic structural diagram of the quick-connect female header in FIG. 1 .

8 is a schematic diagram of an action state in which the quick-plug male head in FIG. 1 moves upward and the quick-plug male head contacts the lower end of the quick-plug female head.

9 is a schematic diagram of an action state in which the quick-plug male head in FIG. 8 continues to move upward, and the quick-plug male head pushes the quick-plug female head to move up a distance D together.

FIG. 10 is a schematic diagram of an action state in which the quick-plug male head in FIG. 9 continues to move upward by a distance s, and the quick-plug male plug is inserted into the inside of the quick-plug female head.

Explanation of the serial number in the picture: 1 quick-connect female head, 2 fixed ferrule, 3 hose connector, 4 male head guide seat, 5 floating sleeve, 6 locking nut, 7 female head gland, 8 female head floating space, 9 Quick plug male head, 10 guide seat main body, 11 cylindrical cavity, 12 trumpet cavity, 13 sleeve connection hole, 14 sleeve connection inner thread, 15 sleeve positioning hole, 16 guide seat connection flange, 17 sets Pipe body, 18 positioning plug connectors, 19 male socket socket, 20 female floating connection cavity, 21 limit flange, 22 guide seat connection external thread, 23 casing top surface, 24 gland connection hole, 25 gland body , 26 top surface connection holes, 27 connection head via holes, 28 floating limit flanges, 29 movable ferrules, 30 movable core sleeves, 31 limit core sleeves, 32 female head mandrels, 33 locking steel balls, 34 limit retaining ring.

Detailed ways

The specific structure of the present invention will be described in detail with reference to FIGS. 1 to 10 . The quick-plug female floating prevention device includes a floating sleeve 5 connected with the quick-connecting female 1. The floating sleeve 5 is composed of a sleeve main body 17, and the sleeve main body 17 is provided with a female floating connection with an open upper end inside. Cavity 20, the lower end of the sleeve body 17 is provided with a male plug cavity 19, and the male plug cavity 19 and the female floating connection cavity 20 communicate with each other. Between the female floating connection cavity 20 of the sleeve body 17 and the male plug cavity 19, there is a limiting convex edge 21 for limiting the position of the lower end of the fixed ferrule 2; It is inserted into the female floating connection cavity 20 of the floating sleeve 5, and the position of the downward movement of the fixed ferrule 2 is limited by the limiting convex edge 21. In addition, the quick-plug male head 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 to contact the quick-plug female head 1 . According to specific use requirements, the quick-plug female connector 1 can adopt different structural forms such as straight-through, elbow or three-way.

The floating sleeve 5 is movably sleeved on the fixed ferrule 2 of the quick-plug female head 1 , and the upper end of the floating sleeve 5 is provided with a female head gland 7 . The female gland 7 is composed of a gland main body 25, the middle of the gland main body 25 is provided with a connector via hole 27, the periphery of the connector via hole 27 and the gland main body 25 are provided with several groups of top surfaces arranged along the circumference Connection hole 26; Correspondingly, several groups of gland connection holes 24 arranged along the circumference are arranged on the sleeve top surface 23 at the upper end of the sleeve main body 17 of the floating sleeve 5. The gland connection holes on the sleeve top surface 23 24 is in one-to-one correspondence with the top connecting holes 26 on the female gland 7 . A floating limit flange 28 is disposed on the lower side of the connector through hole 27 of the female gland 7 , and the floating limit flange 28 is located inside the upper end of the female floating connection cavity 20 of the floating sleeve 5 . Therefore, the female gland 7 is positioned and connected in the gland connecting hole 24 on the top surface 23 of the sleeve of the floating sleeve 5 by using the connecting bolts arranged in the connecting holes 26 of the top surface, and the female gland 7 The floating limiting flange 28 on the lower side of the connecting head through hole 27 is used to limit the position where the fixed ferrule 2 of the quick-plug female connector 1 floats upward in the floating connection cavity 20 of the female connector. In order to facilitate the installation and disassembly of the device and facilitate use, the female head gland 7 can be assembled in a separate structure, for example, two identical semi-circular annular assembly structures (as shown in Figures 5 and 6).

The fixed ferrule 2 at the lower end of the quick-plug female head 1 is located in the female head floating connection cavity 20 of the floating sleeve 5, and the hose connector 3 at the upper end of the quick-plug female head 1 protrudes through the middle through hole of the female head gland 7. to the outside of the floating casing 5. At the same time, between the upper end of the fixed ferrule 2 inside the floating sleeve 5 and the floating limiting flange 28 on the lower side of the female gland 7, there is a female floating space 8 with an upper and lower floating distance D.

The lower end of the floating sleeve 5 is fixedly connected with the male guide seat 4 . The male guide seat 4 is composed of a guide seat main body 10, and a cylindrical cavity 11 is disposed in the middle of the guide seat main body 10; The lower end is provided with a trumpet-shaped cavity 12 whose lower end is open, and the trumpet-shaped cavity 12 , the cylindrical cavity 11 and the sleeve connecting hole 13 are coaxially connected to each other. The main body 10 of the guide seat is also provided with a guide seat connecting flange 16 for connecting with related equipment (eg, the top beam of the unit type support). The lower end of the sleeve connection hole 13 of the male guide seat 4 is provided with a sleeve positioning hole 15, and correspondingly, the lower end of the floating sleeve 5 is provided with a positioning plug 18; to use the positioning plug 18 at the lower end of the floating sleeve 5, Positioning connection is formed with the sleeve positioning hole 15 at the lower end of the sleeve connecting hole 13 of the male guide seat 4 . Moreover, the inner wall of the casing connection hole 13 is provided with a casing connection inner thread 14, the outer wall of the floating casing 5 is provided with a guide seat connection outer thread 22, and the upper part of the guide seat connection outer thread 22 is also provided with a locking nut 6; Then, the floating sleeve 5 is fixedly connected to the sleeve connecting inner thread 14 of the sleeve connecting hole 13 of the male guide seat 4 through the external thread 22 of the guide seat, and the floating sleeve 5 is connected to the upper end of the male guide seat 4. The sleeve connecting holes 13 are connected to each other, and the position of the floating sleeve 5 is fastened by the locking nut 6; at the same time, during the mutual insertion of the quick-connect joints, the trumpet-shaped cavity 12 which is opened at the lower end enters into the The quick plug male head 9 in the cylindrical cavity 11 is automatically straightened, which facilitates the contact and insertion of the quick plug male head 9 and the quick plug female head 1 .

The quick-plug female head 1 is composed of a female head main body, the end of the female head main body facing the quick-plug male head 9 is provided with a movable ferrule 29, the extension end of the movable ferrule 29 is provided with a fixed ferrule 2, and the fixed ferrule 2 and the movable ferrule 2 are provided. A ferrule compression spring is arranged between the ferrules 29 . The main body of the female head is provided with a female head cavity, the two ends of the female head cavity are respectively provided with a liquid inlet of the female cavity and a liquid outlet of the female cavity, and the male head at the liquid inlet of the female cavity is inserted into the cavity 19 , Between the outer wall of the movable ferrule 29 and the inner wall of the fixed ferrule 2, a locking steel ball 33 and a limit stop ring 34 are movably arranged. The outlet of the mother cavity is connected to the hose connector 3 . A mandrel fixing seat is arranged in the female head cavity of the female head body, the mandrel fixing seat is fixedly arranged with a female head mandrel 32 arranged in the axial direction of the female head main body, and the extension end of the female head mandrel 32 is located in the mother cavity. at the liquid inlet. A limit core sleeve 31 is sleeved inside the female head cavity of the quick-plug female head 1 and outside the female head mandrel 32 , and a space-limiting compression spring is arranged between the limit core sleeve 31 and the mandrel fixing seat. A moving core sleeve 30 is also sleeved on the outer side of the limiting core sleeve 31 and at the liquid inlet of the mother cavity, and a moving compression spring is arranged between the moving core sleeve 30 and the main body of the female head.

The quick-plug male head 9 is composed of a male head main body, a male head cavity is arranged inside the male head main body, and both ends of the male head cavity are respectively provided with a hose connection port and a male cavity liquid outlet. On the main body of the male head, one end where the liquid outlet of the male cavity is arranged is provided with a male plug-in convex head, and a locking groove is arranged on the outer side of the male plug-in convex head. A male valve core guide sleeve is also fixedly arranged in the male head cavity, and the male valve core guide sleeve is telescopically provided with a male head valve stem arranged along the axis direction of the male head main body. The front end of the male valve stem is provided with a male valve core with a liquid injection hole, and a male valve core compression spring is arranged between the male valve core and the male valve core guide sleeve. A seal is also arranged between the outer side of the male head valve core and the inner wall of the male cavity liquid outlet at the front end of the male head cavity. Further, through the mutual extrusion contact between the male plug male head of the quick plug male head 9 and the movable core sleeve 30 of the quick plug female head 1, the limiting core sleeve 31 and the female head mandrel 32 are driven to be separated and opened; at the same time, using The male head valve core of the quick-plug male head 9 and the female head mandrel 32 of the quick-plug female head 1 press and contact each other, which drives the female head mandrel 32 to drive the main body of the female head and the movable ferrule 29 and the fixed ferrule 2. move, and the locking slot on the outside of the male plug-in convex head is clamped with the locking steel ball 33 movably arranged in the male plug-in cavity 19; to connect the male head cavity and the female head cavity, so that the liquid medium can circulate, Realize the connection of hydraulic lines.

When the quick-plug female head floating anti-drop device is used, firstly, the quick-plug male head 9 is connected to the plug-in moving mechanism, and the hydraulic hose for supplying liquid is connected to the hose connection port of the quick-plug male head 9; at the same time, Connect the fixed ferrule 2 of the quick-plug female head 1 to the male guide seat 4 through the floating sleeve 5, and the male guide seat 4 is fixedly connected to the relevant equipment through the guide seat connecting flange 16; The hose connector 3 of the female connector 1 is connected to the liquid inlet of the hydraulic drive device (for example: hydraulic column). When it is necessary to connect the hydraulic pipeline and supply liquid for the hydraulic drive device, the quick-plug male head 9 can be inserted into the trumpet-shaped cavity 12 on the lower side of the male head guide seat 4 through the movement of the plug-in moving mechanism; When entering the cylindrical cavity 11 through the trumpet-shaped cavity 12 with the lower end opening, the quick-plug male head 9 will be automatically straightened, and the front end surface of the quick-plug male The end faces of the moving core sleeve 30 are in contact with each other (as shown in Figure 8).

Subsequently, the quick-plug male head 9 continues to move in the axial direction and upward, because the fixed ferrule 2 of the quick-plug female head 1 has a female head floating space 8 with a floating distance D in the female head floating connection cavity 20 of the floating sleeve 5 , so that the quick-plug male head 9 pushes the quick-plug female head 1 upward together and moves to the female head floating space 8 at the upper end of the female head floating connection cavity 20 from D to 0 (as shown in FIG. 9; at this time, the female head floats The space 8 is located at the lower end of the female floating connection cavity 20). After that, when the quick-plug male head 9 continues to move upward, the fixed ferrule 2 of the quick-plug female head 1 and the other components of the quick-plug female head 1 undergo relative displacement s; When it falls into the annular groove at the front end of the push-in male head 9, the connection of the joint is completed (as shown in Figure 10). At this time, the hydraulic pipelines of the equipment at both ends are connected, and the liquid can be supplied.

During the filling process, relying on the floating structure between the fixed ferrule 2 and the floating sleeve 5 of the quick-connect female connector 1, the floating amount in the axial direction can offset the slight fluctuation of the joint in the axial direction caused by the increase of the internal pressure. Momentum, ensuring that the joint is always firmly connected without the application of external force. After the liquid filling is completed, the plug-in moving mechanism drives the quick-plug male head 9 to move downward. When the female-head floating space 8 at the upper end of the female-head floating connection cavity 20 of the floating sleeve 5 changes from 0 to D again, the quick-plug female head 9 moves downward. The fixed ferrule 2 of the head 1 is restrained by the limiting edge 21 at the lower end of the female floating connection cavity 20, and becomes a relatively fixed state; then, as the quick-plug male head 9 continues to move downward, the quick-plug male head 9 and The quick-plug female head 1 is instantly disconnected, and the quick-plug female head 1 and the quick-plug male head 9 automatically complete the current interruption and sealing by virtue of their internal spring structure.

Claims (8)

1. The utility model provides a female head anticreep device that floats of quick connector, includes and inserts female head (1) unsteady sleeve pipe (5) that link to each other fast, its characterized in that: the floating sleeve (5) is movably sleeved on the fixed clamping sleeve (2) of the quick-insertion female head (1), a female head pressing cover (7) is arranged at the upper end of the floating sleeve (5), the rubber pipe connector (3) of the quick-insertion female head (1) extends out of the floating sleeve (5) through a middle through hole of the female head pressing cover (7), and a female head floating space (8) is arranged between the upper end of the fixed clamping sleeve (2) positioned in the floating sleeve (5) and the lower side of the female head pressing cover (7); the lower end of the floating sleeve (5) is fixedly connected with the male head guide seat (4).

2. The floating anti-drop device of the female head of the quick connector as claimed in claim 1, wherein: the floating sleeve (5) comprises a sleeve main body (17), a female floating connecting cavity (20) with an opening at the upper end is arranged in the sleeve main body (17), a male plug inserting cavity (19) is arranged at the lower end of the sleeve main body (17), and the male plug inserting cavity (19) is communicated with the female floating connecting cavity (20); and a limiting convex edge (21) is arranged between the female head floating connection cavity (20) and the male head plugging cavity (19).

3. The floating anti-drop device for the female head of the quick connector as claimed in claim 2, wherein: the female gland (7) comprises a gland main body (25), the middle part of the gland main body (25) is provided with a connector through hole (27), the periphery of the connector through hole (27) and the gland main body (25) are provided with a plurality of groups of top surface connecting holes (26), and correspondingly, the sleeve top surface (23) at the upper end of the sleeve main body (17) of the floating sleeve (5) is provided with a plurality of groups of gland connecting holes (24); the lower side of the connector through hole (27) of the female gland (7) is provided with a floating limit flange (28), and the floating limit flange (28) is positioned in the upper end of the female floating connection cavity (20) of the floating sleeve (5).

4. The floating anti-drop device of the female head of the quick connector as claimed in claim 3, wherein: the female gland (7) adopts a structure form of split assembly.

5. The floating anti-drop device of the female head of the quick connector as claimed in claim 1, wherein: the male head guide seat (4) comprises a guide seat main body (10), a cylindrical cavity (11) is arranged in the middle of the guide seat main body (10), a sleeve connecting hole (13) with an opening at the upper end is formed in the upper end of the cylindrical cavity (11), a horn-shaped cavity (12) with an opening at the lower end is formed in the lower end of the cylindrical cavity (11), and the horn-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).

6. The floating anti-drop device for the female head of the quick connector as claimed in claim 5, wherein: 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-in connector (18).

7. The floating anti-drop device for the female head of the quick connector as claimed in claim 5, wherein: be provided with bushing internal thread (14) on the inner wall of sleeve pipe connecting hole (13), be provided with guide holder on the outer wall of floating sleeve pipe (5) and connect external screw thread (22), and the upper portion that guide holder connects external screw thread (22) still is provided with lock nut (6).

8. The floating anti-drop device of the female head of the quick connector as claimed in claim 1, wherein: the quick-insertion female head (1) comprises a female head main body, a movable clamping sleeve (29) is arranged at one end, facing the quick-insertion male head (9), of the female head main body, a fixed clamping sleeve (2) is arranged at the extending end of the movable clamping sleeve (29), and a clamping sleeve compression spring is arranged between the fixed clamping sleeve (2) and the movable clamping sleeve (29); a female cavity is arranged in the female body, a female cavity liquid inlet and a female cavity liquid outlet are respectively arranged at two ends of the female cavity, and a locking steel ball (33) and a limiting check ring (34) are movably arranged in a male plug-in cavity (19) at the female cavity liquid inlet, between the outer wall of the movable clamping sleeve (29) and the inner wall of the fixed clamping sleeve (2); the liquid outlet of the female cavity is connected with a rubber tube connector (3); a mandrel fixing seat is arranged in a female cavity of the female body, a female mandrel (32) which is arranged along the axial direction of the female body is fixedly arranged on the mandrel fixing seat, and the extending end of the female mandrel (32) is positioned at a liquid inlet of the female cavity; a limiting core sleeve (31) is sleeved inside the female head cavity and outside the female head mandrel (32), and a limiting compression spring is arranged between the limiting core sleeve (31) and the mandrel fixing seat; the outside of spacing core cover (31), female cavity inlet department still overlap and are equipped with removal core cover (30), be provided with between removal core cover (30) and the female head main part and remove compression spring.

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