A self-cleaning and anti-jamming pneumatic steel ball locking connection device

Abstract

The utility model discloses a self-cleaning and anti-jamming pneumatic steel ball locking connection device, which belongs to the technical field of connectors. It includes a female end, a male end and an air source distributor, the female end includes a shell, a movable column, a plurality of steel balls and a plurality of first springs; the male end is provided with a socket matching the insertion end, and the inner peripheral wall of the socket is provided with a plurality of slots that can be inserted into the steel balls; the air source distributor is installed on the female end, and the air source distributor includes an air source inlet, a locking air inlet, a loosening air inlet and a cleaning air inlet. It solves the technical problem that the steel ball and locking contact surface structure of the traditional pneumatic steel ball locking connection device are easily jammed when there is dust, welding slag and other pollution in the use environment, resulting in the male and female ends of the pneumatic steel ball locking connection device being difficult to disengage or the locking failing.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a self-cleaning anti-jamming pneumatic steel ball locking connection device. Background Art

[0002] Pneumatic steel ball locking connection devices are widely used in the automatic switching of robot end effectors, automatic switching and positioning of mechanical structures. The actuator parts required for the locking principle include precision structures such as steel balls and locking cones. These parts are prone to jamming when there is dust, welding slag and other pollution in the use environment, resulting in the male and female ends of the pneumatic steel ball locking connection device being difficult to disengage or locking failure, which seriously affects production safety. Therefore, it is necessary to improve the traditional pneumatic steel ball locking device so that it can automatically clean and achieve the effect of anti-jamming. Summary of the invention

[0003] The purpose of the utility model is to provide a self-cleaning and anti-jamming pneumatic steel ball locking connection device in response to the above-mentioned problems, so as to solve the technical problem that the steel ball and locking contact surface structure of the traditional pneumatic steel ball locking connection device are easily stuck when the use environment is polluted by dust, welding slag, etc., resulting in the male and female ends of the pneumatic steel ball locking connection device being difficult to disengage or the locking failing.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A self-cleaning anti-jamming pneumatic steel ball locking connection device comprises a female end, a male end and an air source distributor, the female end comprises a shell, a movable column, a plurality of steel balls and a plurality of first springs, a pneumatic cavity is arranged at the lower part of the shell, an insertion end is arranged at the upper part of the shell, a movable cavity is arranged at the upper part of the shell, the lower end of the movable column is slidably mounted on the pneumatic cavity, a sealing ring is arranged at the lower end of the movable column, the sealing ring divides the pneumatic cavity into a locking cavity and a releasing cavity, and the outer periphery of the shell is provided with a sealing ring which is in contact with the pneumatic cavity. The locking air port connected to the locking cavity is provided on the outer periphery of the shell body, and the releasing air port connected to the releasing cavity is provided; a plurality of steel balls are movably mounted on the side wall of the active cavity, the upper end of the active column is located in the active cavity, the upper end of the first spring abuts against the active column, and the lower end abuts against the bottom surface of the pneumatic cavity; a socket matching the insertion end is provided on the male end, and a plurality of card slots for inserting the steel balls are provided on the inner peripheral wall of the socket; a clearing hole for connecting the active cavity and the locking cavity is provided in the active column. The movable column moves upward to push the steel ball part out of the outer wall of the movable cavity and makes the steel ball part stuck in the clamping groove to limit the axial movement of the male end and the female end, and the cleaning channel is closed at this time; the movable column moves downward to release the axial movement restriction of the male end and the female end, and the cleaning channel is opened at this time; the air source distributor is installed on the female end, and the air source distributor includes an air source inlet, a locking air inlet, a releasing air inlet and a cleaning air inlet, one end of the locking air inlet is connected to the locking air port, The other end of the locking air inlet is connected to the air source inlet through a first on-off valve, and the locking air inlet is also exhausted and pressure-released through a second on-off valve; one end of the release air inlet is connected to a release air port, and the other end of the release air inlet is connected to the air source inlet through a third on-off valve, and the release air inlet is also exhausted and pressure-released through a fourth on-off valve; one end of the cleaning air inlet is connected to the air source inlet, and the other end is connected to the locking chamber and connected to the active chamber, and a fifth on-off valve is provided on the cleaning air inlet.

[0006] Furthermore, the movable column is provided with a cleaning cylinder, an opening and closing sleeve, a sealing ring and a second spring, the cleaning cylinder is provided with a first air hole with an upper opening, the upper end of the first air hole is connected to the movable cavity, the lower end of the first air hole passes through the side wall of the cleaning cylinder, and the lower end of the cleaning cylinder is provided with a limiting end that limits the opening and closing sleeve from coming out; the opening and closing sleeve is sleeved on the lower end of the cleaning cylinder, the upper part of the inner wall of the opening and closing sleeve is sealed and connected to the cleaning cylinder, and the lower part of the inner wall of the cleaning cylinder is sealed and connected to the sealing limiting end through the sealing ring; a plurality of second air holes are provided on the side of the opening and closing sleeve, the outer end of the second air hole is connected to the locking cavity, and the lower end of the opening and closing sleeve is located below the limiting end; the second spring is sleeved on the outer wall of the cleaning cylinder, the second spring resists the opening and closing sleeve and disconnects the first air hole and the second air hole through the sealing ring; the first air hole and the second air hole form the cleaning channel.

[0007] Furthermore, an anti-torsion positioning structure is arranged between the female end and the male end, and the anti-torsion positioning structure includes a protrusion and a recessed portion with contours corresponding to each other, the protrusion is arranged on the male end, and the recessed portion is arranged on the female end; when the male end and the female end are docked and locked, the protrusion is inserted into the recessed portion.

[0008] Furthermore, a floating sealing cover is provided on the recessed portion, and the floating sealing cover is arranged in accordance with the opening of the recessed portion, and a plurality of sliding columns are evenly provided on the lower end of the floating sealing cover; a plurality of sliding holes are provided on the shell, and the sliding columns are slidably and sealingly installed in the sliding holes.

[0009] Furthermore, a first dust scraping edge is provided on the outer periphery of the opening of the recessed portion, and the inner periphery of the first dust scraping edge is in contact with the outer periphery of the floating sealing cover.

[0010] Furthermore, a second dust scraping edge is provided on the outer periphery of the upper end of the movable column, and the second dust scraping edge can be connected to the inner wall of the insertion hole.

[0011] Furthermore, it also includes an external gas connector, the male head of the gas connector is connected to the male end through a structure, the female head of the gas connector is installed on the gas source distributor, one end of the female head is connected to the gas source inlet, and the other end of the female head is a self-sealing end.

[0012] Furthermore, it also includes a guide pin and a guide seat, the guide pin is fixedly connected to one side of the male end, the guide seat is fixedly connected to one side of the female end, and a guide hole is provided on the guide seat, and the guide pin can be inserted into the guide hole.

[0013] Furthermore, the fourth on-off valve and the second on-off valve both release exhaust pressure through the muffler.

[0014] Furthermore, a connecting notch is provided at the lower end of the movable column, and the clean air inlet is connected to the clean channel through the locking air port, the connecting notch, and the gap at the lower part of the movable column.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. The gas source distributor of the utility model is provided with a clean air inlet, which is connected with the clean channel of the female end. When unlocking, the clean channel is opened, and high-pressure gas is introduced through the clean air inlet. The high-pressure gas can be blown out from the gap between the steel ball and the insertion end to clean the connection surface between the male and female ends of the steel ball, thereby realizing self-cleaning of the pneumatic steel ball locking connection device, thereby achieving smooth connection, locking, unlocking and separation of the male and female ends, and solving the technical problem that the steel ball and locking contact surface structure of the traditional pneumatic steel ball locking connection device is easy to get stuck when there is dust, welding slag and other pollution in the use environment, resulting in the male and female ends of the pneumatic steel ball locking connection device being difficult to disengage or locking failure.

[0017] 2. The utility model realizes automatic opening of the cleaning channel when the male end and the female end are unlocked and separated, and automatic disconnection of the cleaning channel when the male end and the female end are locked, by arranging a cleaning cylinder, an opening and closing sleeve, a sealing ring and a second spring in the movable column. The automatic opening of the cleaning channel is simultaneous with the gap generated by the steel ball and the insertion end, thereby preventing dust and the like from entering the movable cavity; at the same time, the setting of the valve body for controlling the cleaning channel and the control components can be reduced.

[0018] 3. The utility model can prevent the relative rotation between the female end and the male end when locked by providing an anti-torsion positioning structure, realize the circumferential positioning between the female end and the male end, and facilitate the docking of external structures, such as the docking of external gas connectors. At the same time, the guide pin and the guide seat are provided to facilitate the docking of the male end and the female end.

[0019] 4. The utility model can prevent the concave part from being contaminated by having a floating sealing cover, and can scrape the outer peripheral wall of the protruding part by having a first scraping edge, and can scrape the inner wall of the protruding part by having a second scraping edge, so that the protruding part and the concave part can be connected cleanly without impurities, which facilitates the connection and separation of the protruding part and the concave part, prevents impurities from increasing the matching error between the protruding part and the concave part, and improves the repeated positioning accuracy of the device.

[0020] 5. The utility model uses the muffler to release exhaust pressure, and reduces the noise when the male end and the female end are connected or separated; by providing a connecting notch, the clean air inlet duct is connected to the clean channel through the locking air port, the connecting notch, and the lower gap of the movable column. The connection between the clean air inlet duct and the clean channel shares the structure of the locking air duct, which reduces the setting of the connecting pipe between the clean air inlet duct and the clean channel and simplifies the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 It is a three-dimensional cross-sectional view of the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the female end of the utility model;

[0024] Figure 4 This is a three-dimensional cutaway diagram of the female end of the utility model;

[0025] Figure 5 This is a three-dimensional cross-sectional view of the cleaning channel of the utility model;

[0026] Figure 6 It is a three-dimensional diagram of the male end of the utility model;

[0027] Figure 7 This is a perspective structural diagram of the gas source distributor of the utility model.

[0028] In the attached drawings, 1-female end, 2-male end, 3-gas source distributor, 4-external gas connector, 11-housing, 12-active column, 13-steel ball, 14-first spring, 15-recess, 16-floating sealing cover, 17-first scraping edge, 18-second scraping edge, 19-guide seat, 21-jack, 22-slot, 23-protrusion, 24-guide pin, 31-gas source inlet, 32-locking air inlet, 33-releasing air inlet, 34-cleaning air inlet, 35-multi-channel solenoid valve, 36-fifth on-off valve, 37-dissipation Sounder, 111-insertion end, 112-movable cavity, 113-locking cavity, 114-releasing cavity, 115-locking air port, 116-releasing air port, 117-locking infrared sensor, 118-releasing infrared sensor, 121-cleaning cylinder, 122-opening and closing sleeve, 123-sealing ring, 124-second spring, 125-top sleeve, 126-movable sleeve, 127-connecting gap, 128-sealing ring, 161-sliding column, 1211-first air hole, 1212-limiting end, 1221-second air hole. DETAILED DESCRIPTION

[0029] The specific implementation of the utility model is further described below with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] See also Figures 1 to 7A self-cleaning anti-jamming pneumatic steel ball locking connection device comprises a female end 1, a male end 2 and an air source distributor 3, the female end 1 comprises a shell 11, a movable column 12, a plurality of steel balls 13 and a plurality of first springs 14, a pneumatic cavity is arranged at the lower part of the shell 11, an insertion end 111 is arranged at the upper part of the shell 11, a movable cavity 112 is arranged at the upper part of the shell 11, the lower end of the movable column 12 is slidably mounted in the pneumatic cavity, a sealing ring 128 is mounted at the lower end of the movable column 12, the sealing ring 128 divides the pneumatic cavity into a locking cavity 113 and a releasing cavity 114, the shell 11 The outer periphery is provided with a locking air port 115 connected to the locking cavity 113, and the outer periphery of the housing 11 is provided with a release air port 116 connected to the release cavity 114; a plurality of steel balls 13 are movably mounted on the side wall of the active cavity 112, the upper end of the active column 12 is located in the active cavity 112, the upper end of the first spring 14 abuts against the active column 12, and the lower end abuts against the bottom surface of the pneumatic cavity; the male end 2 is provided with a socket 21 matching the insertion end 111, and the inner wall of the socket 21 is provided with a plurality of slots 22 that can be inserted into the steel balls 13; the active column 12 is provided with a socket 21 that can be connected to the active cavity 112. The cleaning passage of the male end 2 and the female end 1 is closed when the movable column 12 is moved upward to partially push the steel ball 13 out of the outer wall of the movable cavity 112 and make the steel ball 13 partially stuck in the card groove 22 to limit the axial movement of the male end 2 and the female end 1, and the cleaning passage is closed at this time; the movable column 12 is moved downward to release the axial movement restriction of the male end 2 and the female end 1, and the cleaning passage is opened at this time; the air source distributor 3 is installed on the female end 1, and the air source distributor 3 includes an air source inlet 31, a locking air inlet 32, a releasing air inlet 33 and a cleaning air inlet 34, and one end of the locking air inlet 32 ​​is connected to the locking air inlet 33. The air inlet 33 is connected to the air port 115, and the other end of the locking air inlet duct 32 is connected to the air source inlet 31 through the first on-off valve, and the locking air inlet duct 32 is also exhausted and pressure-released through the second on-off valve; one end of the release air inlet duct 33 is connected to the release air port 116, and the other end of the release air inlet duct 33 is connected to the air source inlet 31 through the third on-off valve, and the release air inlet duct 33 is also exhausted and pressure-released through the fourth on-off valve; one end of the cleaning air inlet duct 34 is connected to the air source inlet 31, and the other end is connected to the locking chamber 113 and connected to the active chamber 112, and a fifth on-off valve 36 is arranged on the cleaning air inlet duct 34.

[0034] In this embodiment, a cleaning cylinder 121, an opening and closing sleeve 122, a sealing ring 123 and a second spring 124 are arranged in the movable column 12. The cleaning cylinder 121 is provided with a first air hole 1211 with an upper opening. The upper end of the first air hole 1211 is communicated with the movable cavity 112. The lower end of the first air hole 1211 passes through the side wall of the cleaning cylinder 121. The lower end of the cleaning cylinder 121 is provided with a limiting end 1212 that limits the opening and closing sleeve 122 from coming out. The opening and closing sleeve 122 is sleeved on the lower end of the cleaning cylinder 121. The upper part of the inner wall of the opening and closing sleeve 122 is sealed and connected with the cleaning cylinder 121. The lower part of the inner wall of the cylinder 121 is sealed and connected to the sealing limit end 1212 through a sealing ring 123; a plurality of second air holes 1221 are arranged on the side of the opening and closing sleeve 122, the outer ends of the second air holes 1221 are connected to the locking chamber 113, and the lower end of the opening and closing sleeve 122 is located below the limit end 1212; the second spring 124 is sleeved on the outer wall of the cleaning cylinder 121, the second spring 124 is against the opening and closing sleeve 122 and disconnects the first air hole 1211 and the second air hole 1221 through the sealing ring 123; the first air hole 1211 and the second air hole 1221 form a cleaning channel. In addition, a top sleeve 125 and an intermediate sleeve are also provided in the movable column 12. The top sleeve 125 is sleeved on the cleaning cylinder 121 and is pressed against the upper part of the cleaning cylinder 121 by the upper end of the second spring 124. The intermediate sleeve is slidably sleeved on the cleaning cylinder 121 and is located between the opening and closing sleeve 122 and the top sleeve 125. The opening and closing sleeve 122 abuts against the lower end of the second spring 124 through the intermediate sleeve.

[0035] In this embodiment, an anti-torsion positioning structure is provided between the female end 1 and the male end 2, and the anti-torsion positioning structure includes a protrusion 23 and a recessed portion 15 with contours corresponding to each other, the protrusion 23 is provided on the male end 2, and the recessed portion 15 is provided on the female end 1; when the male end 2 and the female end 1 are docked and locked, the protrusion 23 is inserted into the recessed portion 15. Specifically, the outer wall of the protrusion 23 is provided with an inclined surface for easy demolding, and the cross-section of the protrusion 23 is a regular hexagon. By providing an anti-torsion positioning structure, relative rotation between the female end 1 and the male end 2 when locked can be prevented, and circumferential positioning between the female end 1 and the male end 2 can be achieved, which is convenient for docking of external structures, such as docking of an external gas connector 4. At the same time, by providing a guide pin 24 and a guide seat 19, the docking of the male end 2 and the female end 1 is facilitated.

[0036] In this embodiment, a floating sealing cover 16 is provided on the recessed part 15. The floating sealing cover 16 and the opening of the recessed part 15 are arranged in accordance with the shape. A plurality of sliding posts 161 are evenly arranged on the lower end of the floating sealing cover 16. A plurality of sliding holes are provided on the housing 11. The sliding posts 161 are slidably and sealedly installed in the sliding holes. When the male end 2 is separated when high-pressure gas is introduced into the cavity and released, the sliding posts 161 move the floating sealing cover 16 upward to seal the opening of the recessed part 15. A first scraping edge 17 is provided on the outer periphery of the opening of the recessed part 15. The inner periphery of the first scraping edge 17 is in contact with the outer periphery of the floating sealing cover 16. A second scraping edge 18 is provided on the outer periphery of the upper end of the movable column 12. The second scraping edge 18 can be connected with the inner wall of the insertion hole 21.

[0037] In this embodiment, an external gas connector 4 is also included. The male head of the gas connector is connected to the male end 2 through a structure. The female head of the gas connector is installed on the gas source distributor 3. One end of the female head is connected to the gas source inlet 31, and the other end of the female head is a self-sealing end.

[0038] In this embodiment, a guide pin 24 and a guide seat 19 are also included. The guide pin 24 is fixedly connected to one side of the male end 2, and the guide seat 19 is fixedly connected to one side of the female end 1. A guide hole is provided on the guide seat 19, and the guide pin 24 can be inserted into the guide hole.

[0039] In this embodiment, the fourth on-off valve and the second on-off valve are both exhausted and depressurized through the muffler 37. Specifically, the first on-off valve, the second on-off valve, the third on-off valve and the fourth on-off valve are integrated into a multi-channel solenoid valve 35, one end of the multi-channel solenoid valve 35 is connected to the air source inlet 31, one end is connected to the locking air port 115, one end is connected to the release air port 116, and the other two ends are respectively connected to a muffler 37.

[0040] In this embodiment, a connecting notch 127 is provided at the lower end of the movable column 12 , and the clean air inlet 34 is connected to the clean channel through the locking air port 115 , the connecting notch 127 , and the gap at the lower part of the movable column 12 .

[0041] In this embodiment, a locking infrared sensor 117 and a releasing infrared sensor 118 are provided at the lower part of the shell 11. One end of the locking infrared sensor 117 penetrates into the upper part of the pneumatic cavity, and one end of the releasing infrared sensor 118 penetrates into the lower part of the pneumatic cavity.

[0042] The specific working principle is as follows:

[0043] 1. When the male end 2 and the female end 1 are locked, the locking air inlet 32 ​​passes the high-pressure gas to the locking chamber 113, and the movable column 12 is pushed upward by the first spring 14, so that the steel ball 13 is pushed out from the side of the insertion end 111 and inserted into the card slot 22 to achieve the locking of the male end 2 and the female end 1.

[0044] 2. When the male end 2 and the female end 1 are pulled out, the locking chamber 113 is depressurized, the air inlet 33 is released to allow the high-pressure gas to pass into the releasing chamber 114, and the movable column 12 moves downward, so that the steel ball 13 can be received into the insertion end 111 to release the lock of the male end 2. At the same time, the floating sealing cover 16 is lifted up to push the male end 2 upward for easy separation; when the movable column 12 moves down to the lower position, the cleaning channel is unobstructed, and high-pressure gas can be introduced through the cleaning air inlet 34 to flush and clean the movable chamber 112.

[0045] 3. After the male end 2 and the female end 1 are completely separated, the cavity 114 is released to release the pressure, and the movable column 12 is pushed upward by the first spring 14, so that the steel ball 13 is pushed out from the side of the insertion end 111. At this time, the movable cavity 112 is sealed, and the floating sealing cover 16 and the first scraping edge 17 seal the opening of the recessed portion 15. The cleaning channel is disconnected, waiting for the next connection of the male end 2.

[0046] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A self-cleaning anti-jamming pneumatic steel ball locking connection device, characterized in that: It comprises a female end, a male end and an air source distributor, the female end comprises a shell, a movable column, a plurality of steel balls and a plurality of first springs, a pneumatic cavity is arranged at the lower part of the shell, an insertion end is arranged at the upper part of the shell, a movable cavity is arranged at the upper part of the shell, the lower end of the movable column is slidably mounted on the pneumatic cavity up and down, a sealing ring is arranged at the lower end of the movable column, the sealing ring divides the pneumatic cavity into a locking cavity and a releasing cavity, a locking air port connected to the locking cavity is arranged at the outer periphery of the shell, and a releasing air port connected to the releasing cavity is arranged at the outer periphery of the shell; a plurality of steel balls are movably mounted on the side wall of the active cavity, the upper end of the movable column is located in the active cavity, the upper end of the first spring abuts against the movable column, and the lower end abuts against the bottom surface of the pneumatic cavity; a socket matching the insertion end is arranged on the male end, and a plurality of slots into which the steel balls can be inserted are arranged on the inner peripheral wall of the socket; the movable A cleaning passage connecting the movable cavity and the locking cavity is arranged in the column, the movable column can move upward to push the steel ball part out of the outer wall of the movable cavity and make the steel ball part stuck in the clamping groove to limit the axial movement of the male end and the female end, and at this time the cleaning passage is closed, the movable column can move downward to release the axial movement restriction of the male end and the female end, and at this time the cleaning passage is opened; the air source distributor is installed on the female end, the air source distributor comprises an air source inlet, a locking air inlet, a releasing air inlet and a cleaning air inlet, one end of the locking air inlet is connected to the locking air port, the other end of the locking air inlet is connected to the air source inlet through a first on-off valve, and the locking air inlet is also exhausted and pressure-released through the second on-off valve; one end of the releasing air inlet is connected to the releasing air port, the other end of the releasing air inlet is connected to the air source inlet through a third on-off valve, and the releasing air inlet is also exhausted and pressure-released through the fourth on-off valve; One end of the clean air inlet is connected to the air source inlet, and the other end is communicated with the locking chamber. A fifth on-off valve is arranged on the clean air inlet.

2. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: The movable column is provided with a cleaning cylinder, an opening and closing sleeve, a sealing ring and a second spring, and the cleaning cylinder is provided with a first air hole with an upper opening, the upper end of the first air hole is communicated with the movable cavity, the lower end of the first air hole passes through the side wall of the cleaning cylinder, and the lower end of the cleaning cylinder is provided with a limiting end that limits the opening and closing sleeve from coming out; the opening and closing sleeve is sleeved on the lower end of the cleaning cylinder, the upper part of the inner wall of the opening and closing sleeve is sealed and connected with the cleaning cylinder, and the lower part of the inner wall of the cleaning cylinder is sealed and connected with the sealing limiting end through the sealing ring; a plurality of second air holes are provided on the side of the opening and closing sleeve, the outer end of the second air hole is communicated with the locking cavity, and the lower end of the opening and closing sleeve is located below the limiting end; the second spring is sleeved on the outer wall of the cleaning cylinder, the second spring resists the opening and closing sleeve and makes the first air hole and the second air hole disconnected and connected through the sealing ring; the first air hole and the second air hole form the cleaning channel.

3. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: An anti-torsion positioning structure is arranged between the female end and the male end, and the anti-torsion positioning structure includes a protrusion and a recessed portion with contours corresponding to each other, the protrusion is arranged on the male end, and the recessed portion is arranged on the female end; when the male end and the female end are docked and locked, the protrusion is inserted into the recessed portion.

4. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 3, characterized in that: A floating sealing cover is arranged on the recessed portion, and the floating sealing cover is arranged in accordance with the opening of the recessed portion. A plurality of sliding columns are evenly arranged on the lower end of the floating sealing cover; a plurality of sliding holes are arranged on the shell, and the sliding columns are slidably and sealingly installed in the sliding holes.

5. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 4, characterized in that: A first dust scraping edge is arranged at the outer periphery of the opening of the recessed portion, and the inner periphery of the first dust scraping edge is in contact with the outer periphery of the floating sealing cover.

6. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: The outer periphery of the upper end of the movable column is provided with a second dust scraping edge, and the second dust scraping edge can be connected with the inner wall of the insertion hole.

7. A self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: It also includes an external gas connector, the male head of the gas connector is connected to the male end through a structure, the female head of the gas connector is installed on the gas source distributor, one end of the female head is connected to the gas source inlet, and the other end of the female head is a self-sealing end.

8. The self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: It also includes a guide pin and a guide seat, wherein the guide pin is fixedly connected to one side of the male end, and the guide seat is fixedly connected to one side of the female end. A guide hole is provided on the guide seat, and the guide pin can be inserted into the guide hole.

9. The self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: The fourth on-off valve and the second on-off valve both release exhaust pressure through the muffler.

10. The self-cleaning anti-jamming pneumatic steel ball locking connection device according to claim 1, characterized in that: A connecting notch is provided at the lower end of the movable column, and the clean air inlet is connected to the clean channel through the locking air port, the connecting notch, and the gap at the lower part of the movable column.

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