Gas circuit connection device

Abstract

The present application relates to the technical field of pipeline connection, and discloses a gas circuit connecting device. The gas circuit connecting device comprises a first connecting assembly, a second connecting assembly and a gas pipe plug. The gas pipe plug is arranged on a movable support. When the movable support is in a movable state, the position of the movable support relative to a fixed unit is adjusted, so that the gas pipe plug is moved towards the first connecting assembly, and the gas pipe plug is connected to a gas pipe socket. Manual plugging and unplugging is not required, the operation difficulty is reduced, the work efficiency is improved, and when the gas pipe plug is connected to the gas pipe socket, the movable support is switched to a locked state. The gas pipe plug is limited between the pressing unit and the movable support by the limiting part. The pressing unit always applies a pressing force to the movable support, and the gas pipe plug is stably limited. After the gas pipe plug is connected to the gas pipe socket, the pressing state is always maintained, the gas pipe plug is prevented from loosening, the reliability of the gas circuit connection is improved, and the risk of gas circuit sealing failure is reduced.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, and more specifically to a gas connection device. Background Technology

[0002] For automated equipment, pneumatic tooling, and aerospace devices, it is often necessary to quickly connect and disconnect multiple air lines between the equipment end (such as mobile worktables, robot end tools, and spacecraft) and the fixed end (such as the air source side). Traditionally, manual plugging and unplugging of connectors is used for connection. However, manual plugging and unplugging is inefficient, and when operating multiple lines simultaneously, it is easy to make mistakes or omissions. The operation is also difficult, and after the air pipe connectors are connected, the connection reliability at the joint is poor. It is easily loosened by factors such as vibration, which can lead to air line seal failure and affect the normal operation of the air line. Summary of the Invention

[0003] This invention provides a gas connection device to solve the problems of high operational difficulty, low work efficiency and poor connection reliability in the process of connecting gas pipe connectors.

[0004] This invention provides a gas connection device, comprising: The first connecting component includes a mounting bracket and an air tube socket. The mounting bracket includes a connecting part and a mounting part that are connected to each other. The connecting part is adapted to be connected to an external device, and the air tube socket is disposed on the mounting part. The second connecting component is disposed on one side of the first connecting component along a first direction, and includes a fixing unit, a movable bracket, and a clamping unit. The movable bracket is disposed between the fixing unit and the first connecting component. The movable bracket has an active state that moves relative to the fixing unit and a locked state that is fixed relative to the fixing unit. The clamping unit is disposed between the movable bracket and the fixing unit and is adapted to apply a clamping force to the movable bracket along the first direction. An airway plug is disposed on the second connecting assembly and is correspondingly disposed to the airway socket. The airway plug includes a main body and a limiting part. The limiting part protrudes from the outer peripheral surface of the main body. The main body passes through the movable bracket along a first direction. The limiting part is sandwiched between the pressing unit and the movable bracket. The main body is detachably inserted into the airway socket.

[0005] Beneficial effects: By placing the endotracheal plug on the movable support, when the movable support is in the movable state, adjusting its position relative to the fixed unit moves the endotracheal plug toward the first connecting component, thereby achieving docking between the endotracheal plug and the endotracheal socket without manual insertion or removal, reducing operational difficulty and improving work efficiency. Furthermore, after the endotracheal plug and endotracheal socket are docked, switching the movable support to the locked state fixes its position. Simultaneously, the endotracheal plug is limited between the clamping unit and the movable support by the limiting part. The clamping unit consistently applies clamping force to the movable support, stably limiting the endotracheal plug and ensuring it remains clamped after docking. This prevents the endotracheal plug from loosening due to vibration or gas back pressure, improving the reliability of the airway connection and effectively reducing the risk of airway seal failure.

[0006] In one optional embodiment, the air circuit connection device further includes a connection unit connected between the fixed unit and the movable bracket, wherein the connection unit is a length-adjustable connector.

[0007] Beneficial effects: The connection and locking of the trachea plug and trachea socket can be completed by adjusting the length of the connecting unit. The operation is simple and the connection reliability can be guaranteed.

[0008] In one optional implementation, the connection unit includes: An adjusting rod, one end of which is fixedly connected to the movable bracket, and the other end of which passes through the fixed unit, wherein the adjusting rod is a straight rod and movably inserted into the fixed unit; or, one end of which is fixedly connected to the movable bracket, and the other end of which is fixedly connected to the fixed unit, wherein the adjusting rod is a telescopic rod; A locking part is provided on the adjusting rod, and can lock the length of the adjusting rod between the fixed unit and the movable bracket.

[0009] Beneficial effects: The structure is simple and easy to adjust. The length of the adjusting rod between the fixed unit and the movable bracket can be adjusted and locked as needed, thereby adjusting and locking the distance between the fixed unit and the movable bracket. The reliability after locking is high, and it can stably maintain the relative position of the movable bracket and the fixed unit, preventing the air tube plug from loosening due to vibration.

[0010] In one optional embodiment, the clamping unit includes a pressure plate and an abutment member. The pressure plate is disposed between the movable bracket and the fixed unit, and the abutment member is disposed between the pressure plate and the fixed unit. The abutment member is adapted to provide a clamping force to the pressure plate toward the movable bracket.

[0011] Beneficial effects: Under the thrust of the abutment, the pressure plate is always pressed against the limiting part of the air pipe plug, so that the limiting part is clamped and fixed between the pressure plate and the movable bracket, preventing the air pipe plug from moving along the first direction after docking, further ensuring the stability of the connection between the air pipe plug and the air pipe socket, and the continuous pressing force can counteract the reverse thrust of the internal air pressure on the air pipe plug when the air pipe is ventilated, further preventing the joint from loosening and ensuring the stable sealing performance of the air circuit.

[0012] In one optional embodiment, the abutting member is an elastic member, one end of which is connected to or abuts the fixing unit, and the other end is connected to or abuts the pressure plate, and the elastic member is in a compressed state.

[0013] Beneficial effects: The elastic element in the compressed state can continuously apply elastic clamping force to the pressure plate, ensuring that the pressure plate always presses against the limiting part of the air pipe plug. Even if the air connection device is vibrated, the elastic element can buffer the vibration and maintain the clamping force, further improving the clamping reliability. The structure is simple, the cost is low, and the maintenance is convenient.

[0014] In one optional embodiment, the pressure plate has a first through hole, and the movable bracket has a second through hole, the second through hole being provided corresponding to the first through hole; The main body is inserted through the first through hole and the second through hole, and the limiting part is clamped between the movable bracket and the pressure plate.

[0015] Beneficial effects: The endotracheal plug can be quickly installed and positioned without the need for additional fixing structures. It is easy to disassemble and replace, and the limiting is stable and reliable. The endotracheal plug will not move along the first direction.

[0016] In one optional embodiment, the main body portion is clearance-fitted with the first through hole and clearance-fitted with the second through hole.

[0017] Beneficial effects: The tracheal plug can float radially. Even if there is a certain centering deviation between the first connecting component and the second connecting component, causing a slight offset between the center of the tracheal socket and the tracheal plug, the tracheal plug can automatically adjust its radial position during insertion by floating radially, automatically aligning itself with the tracheal socket, and achieving reliable docking between the tracheal socket and the tracheal plug.

[0018] In one optional embodiment, the mounting part has a mounting hole, and the air pipe socket is detachably mounted in the mounting hole.

[0019] Beneficial effects: It facilitates the disassembly and replacement of the air tube socket. When the air tube socket is damaged, it can be replaced separately without the need to replace the entire device, which helps reduce maintenance costs.

[0020] In one alternative implementation, the number of mounting holes is multiple.

[0021] Beneficial effects: It adapts to the use of multiple gas circuits connected at the same time, eliminating the need for individual connection operations, effectively improving the efficiency of connecting and disconnecting multiple gas circuits, and avoiding problems such as incorrect or missing connections.

[0022] In one optional embodiment, the endotracheal plug and / or the endotracheal socket are provided with a pressure balancing structure, which is adapted to balance the gas back pressure at the interface between the endotracheal plug and the endotracheal socket.

[0023] Beneficial effects: Prevents the endotracheal tube plug and endotracheal tube socket from unexpectedly disengaging under high pressure, further improving the stability and safety of the endotracheal connection under high pressure conditions. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a gas connection device according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the gas connection device.

[0026] Explanation of reference numerals in the attached figures: 1. First connecting assembly; 11. Mounting bracket; 111. Connecting part; 112. Mounting part; 1121. Mounting hole; 12. Air pipe socket; 2. Second connecting assembly; 21. Fixing unit; 22. Movable bracket; 221. Second through hole; 23. Pressing unit; 231. Pressure plate; 2311. First through hole; 232. Abutting part; 24. Connecting unit; 241. Adjusting rod; 242. Locking part; 3. Air pipe plug; 31. Main body; 32. Limiting part; 4. Fixed end hose. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In fields such as automation equipment, pneumatic tooling, and aerospace, it is often necessary to quickly connect and disconnect multiple air lines between equipment (such as mobile workbenches, robot end effectors, and spacecraft) and fixed ends (such as the air source side). Traditional methods often use manual plugging and unplugging of connectors or automatic docking modules. Manual plugging and unplugging is inefficient, and misconnection or omission is prone to occur when operating multiple lines simultaneously. Automatic docking modules in related technologies use a drive component to move a bracket with an air pipe plug close to and fix it in the corresponding position, allowing the air pipe plug to connect to the air pipe socket. In other words, both the driving and fixing work after connection are completed by the drive component. However, the drive component usually has poor stability, resulting in poor connection reliability of the air pipe connector. It is susceptible to loosening due to vibration and other factors, leading to air line seal failure and affecting the normal operation of the air line. Furthermore, automatic docking modules are often complex in structure, expensive, and require strict installation accuracy; even a slight misalignment can lead to docking failure or seal damage. Therefore, there is a need for a pneumatic connection device that can reduce the difficulty of operation, improve work efficiency, and ensure the reliability of the connection between the tracheal connector (i.e., the tracheal plug and the tracheal socket).

[0029] Furthermore, under high-pressure gas supply conditions, gas back pressure may cause the gas hose plug to automatically dislodge from the gas hose socket, resulting in unexpected gas supply interruptions or even safety accidents. Therefore, maintaining a reliable connection of the gas hose connector under different pressure conditions is also an important technical problem that needs to be solved in this field.

[0030] The following is combined with Figures 1 to 2 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a pneumatic connection device is provided, comprising: a first connecting component 1, a second connecting component 2, and a pneumatic tube plug 3. The first connecting component 1 includes a mounting bracket 11 and a pneumatic tube socket 12. The mounting bracket 11 includes a connecting portion 111 and a mounting portion 112 connected together. The connecting portion 111 is adapted to connect to an external device, and the pneumatic tube socket 12 is disposed on the mounting portion 112. The second connecting component 2 is disposed on one side of the first connecting component 1 along a first direction and includes a fixing unit 21, a movable bracket 22, and a clamping unit 23. The movable bracket 22 is disposed between the fixing unit 21 and the first connecting component 1, and has a movable state that moves relative to the fixing unit 21 and a clamping state that is connected to the fixing unit 21. 1. In a relatively fixed locked state, the clamping unit 23 is disposed between the movable bracket 22 and the fixed unit 21, and is adapted to apply clamping force to the movable bracket 22 in the first direction; the air pipe plug 3 is disposed on the second connecting component 2 and is correspondingly disposed with the air pipe socket 12. The air pipe plug 3 includes a main body 31 and a limiting part 32. The limiting part 32 is disposed protruding from the outer peripheral surface of the main body 31. The main body 31 passes through the movable bracket 22 in the first direction. The limiting part 32 is clamped between the clamping unit 23 and the movable bracket 22. The main body 31 is detachably inserted into the air pipe socket 12.

[0032] It should be noted that the air connection device is used to connect and disconnect the air supply between the air source and the external device. The air source provides the gas and is usually placed at a fixed end (such as a rack or ground base). The external device is a mobile device that requires air, such as a mobile workbench or a robot end effector. The mounting bracket 11 is detachably connected to the external device via the connecting part 111. After the mounting bracket 11 is fixedly connected to the external device, the air pipe socket 12 has openings at both ends. One open end is connected to the device end hose on the external device for air supply, and the other open end is used to connect to the air pipe plug 3. The air pipe plug 3 has openings at both ends. One end is connected to the air pipe socket 12, and the other end is connected to the fixed end hose 4 for air supply. The device end hose is the hose connected to the air inlet of the external device, and the fixed end hose 4 is the hose connected to the air source.

[0033] It should also be noted that the first direction refers to Figure 1 and Figure 2The "first direction" indicated by the middle arrow is specifically the direction perpendicular to the fixed end mounting surface, which is also the height direction of the second connecting component 2. The fixed end mounting surface can be a mounting surface on the rack or the ground. The first connecting component 1 and the second connecting component 2 are separate structures. When the movable bracket 22 of the second connecting component 2 approaches the first connecting component 1, the air pipe plug 3 can be aligned and inserted into the air pipe socket 12. When it is necessary to disconnect the air circuit, the external device moves the first connecting component 1 away from the second connecting component 2. The air pipe plug 3 is limited between the clamping unit 23 and the movable bracket 22 and cannot move with the first connecting component 1. Therefore, the air pipe plug 3 can automatically detach from the air pipe socket 12, completing the separation operation without additional unlocking steps, making the operation convenient.

[0034] By applying the air circuit connection device of this embodiment, the air pipe plug 3 is placed on the movable bracket 22. When the movable bracket 22 is in the movable state, the position of the movable bracket 22 relative to the fixed unit 21 can be adjusted to move the air pipe plug 3 toward the first connection component 1, thereby realizing the connection between the air pipe plug 3 and the air pipe socket 12 without manual insertion and removal, reducing the difficulty of operation and improving work efficiency. After the air pipe plug 3 is connected to the air pipe socket 12, the movable bracket 22 is switched to the locked state, and the position of the movable bracket 22 is fixed. At the same time, the air pipe plug 3 is limited by the limiting part 32 between the pressing unit 23 and the movable bracket 22. The pressing unit 23 always applies a pressing force to the movable bracket 22 to stably limit the air pipe plug 3, ensuring that the air pipe plug 3 and the air pipe socket 12 are always in a pressed state after being connected, avoiding the air pipe plug from loosening due to vibration or gas back pressure, improving the reliability of the air circuit connection, and effectively reducing the risk of air circuit sealing failure.

[0035] Meanwhile, the limiting part 32 of the tracheal plug 3 is clamped between the clamping unit 23 and the movable bracket 22. When the movable bracket 22 is locked, the position of the tracheal plug 3 relative to the movable bracket 22 and the fixing unit 21 is fixed along the first direction. When the air supply ends and the tracheal socket 12 needs to be separated from the tracheal plug 3, the first connecting component 1 is moved away from the second connecting component 2. The movable bracket 22 restricts the movement of the tracheal plug 3 along the first direction. The tracheal socket 12 can be passively separated from the tracheal plug 3 under the action of the first connecting component 1. The tracheal plug 3 and the tracheal socket 12 can be quickly separated without additional unlocking operation. The operation is simple and effectively improves the efficiency of air circuit disconnection, further ensuring the efficiency of the entire working process. At the same time, it can prevent the tracheal plug 3 from being pulled out with the external equipment. The separation action is simple and does not damage the connector.

[0036] In one embodiment, the fixing unit 21 is a plate-shaped structure, which is simple in structure, easy to process, manufacture and install, and can be stably installed on the fixing end mounting surface. At the same time, it facilitates the installation of the connecting unit 24 and the abutment 232, and the overall structure is more regular.

[0037] In one embodiment, the mounting part 112 has a mounting hole 1121, and the air tube socket 12 is detachably installed in the mounting hole 1121. This arrangement facilitates the disassembly and replacement of the air tube socket 12. When the air tube socket 12 is damaged, it can be replaced separately without replacing the entire device, which helps to reduce maintenance costs.

[0038] In one embodiment, there are multiple mounting holes 1121. By setting the number of mounting holes 1121 to multiple, one air tube socket 12 can be installed in each mounting hole 1121. In this way, multiple air tube sockets 12 can be installed on the mounting bracket 11 at the same time to cooperate with multiple air tube plugs 3 to realize the simultaneous connection and disconnection of multiple air lines. This further adapts to the usage requirements of connecting multiple air lines at the same time, eliminating the need for one-by-one connection operations, effectively improving the connection and disconnection efficiency of multiple air lines, and avoiding the problems of incorrect connection or missing connection.

[0039] Specifically, by simply bringing the movable bracket 22 close to the first connecting component 1, the movable bracket 22 can bring the air tube plug 3 close to the first connecting component 1, thus achieving simultaneous connection of multiple air tube plugs 3 and air tube sockets 12 at one time, without having to plug and unplug them one by one. Similarly, when it is necessary to disconnect, the first connecting component 1 moves away from the movable bracket 22 along with the external device, and multiple air tube sockets 12 can be simultaneously disconnected from the corresponding air tube plugs 3.

[0040] It should be noted that the mounting hole 1121 is a through hole formed on the mounting part 112, and the mounting hole 1121 extends through the mounting part 112 along the first direction. There are multiple mounting holes 1121, and one air pipe socket 12 can be installed in each mounting hole 1121. There are multiple air pipe sockets 12, and the number of air pipe sockets 12 is less than or equal to the number of mounting holes 1121. Specifically, multiple air pipe sockets 12 are installed on the mounting bracket 11 according to actual needs, and the number of air pipe sockets 12 is equal to the number of hoses at the end of the equipment.

[0041] In one embodiment, the airway connection device further includes a connection unit 24, which is connected between the fixed unit 21 and the movable support 22. The connection unit 24 is a length-adjustable connector. The connection unit 24 is used to adjust the position of the movable support 22 relative to the fixed unit 21 and can be locked. By setting the length-adjustable connection unit 24 to connect the fixed unit 21 and the movable support 22, the distance between the fixed unit 21 and the movable support 22 can be adjusted and locked by adjusting the length of the connection unit 24, thereby adjusting the distance between the movable support 22 and the first connecting component 1. This allows the movable support 22 to drive the air pipe plug 3 closer to the air pipe socket 12 on the first connecting component 1, thereby completing the docking of the air pipe plug 3 and the air pipe socket 12. After docking, the length of the connection unit 24 will not change, locking the movable support 22 in its current position and ensuring that the air pipe plug 3 and the air pipe socket 12 are always in the plugged-in state. That is, the docking and locking of the air pipe plug 3 and the air pipe socket 12 can be completed by adjusting the length of the connection unit 24. The operation is simple and the connection reliability can be guaranteed.

[0042] It should be noted that the fixed unit 21 is fixed relative to the fixed end mounting surface. By adjusting the distance between the movable bracket 22 and the fixed unit 21, the movable bracket 22 drives the air pipe plug 3 to move relative to the fixed unit 21 and the fixed end mounting surface, thereby moving the air pipe plug 3 toward the air pipe socket 12.

[0043] In one embodiment, the connecting unit 24 includes an adjusting rod 241 and a locking part 242. One end of the adjusting rod 241 is fixedly connected to the movable bracket 22, and the other end of the adjusting rod 241 passes through the fixed unit 21. The adjusting rod 241 is a straight rod and is movably inserted into the fixed unit 21. The locking part 242 is provided on the adjusting rod 241 and can lock the length of the adjusting rod 241 between the fixed unit 21 and the movable bracket 22. The adjusting rod 241 and the locking part 242 constitute an adjustable-length connecting unit 24, which has a simple structure and is easy to adjust. The length of the adjusting rod 241 between the fixed unit 21 and the movable bracket 22 can be adjusted and locked as needed, thereby adjusting and locking the distance between the fixed unit 21 and the movable bracket 22. Moreover, the reliability after locking is high, and it can stably maintain the relative position of the movable bracket 22 and the fixed unit 21, preventing the air tube plug 3 from loosening due to vibration.

[0044] It should be noted that the locking part 242 has a locked state and an unlocked state. When it is necessary to adjust the relative distance between the movable bracket 22 and the fixed unit 21, the locking part 242 is unlocked and the locking part 242 is in the unlocked state. The end of the adjusting rod 241 away from the movable bracket 22 can move relative to the fixed unit 21 in the first direction. When the distance is adjusted to the right, the locking part 242 is switched to the locked state, which locks the length of the adjusting rod 241, thereby locking the relative position between the movable bracket 22 and the fixed unit 21, so that the movable bracket 22 and the fixed unit 21 maintain the current distance unchanged. The operation is simple and the locking is reliable.

[0045] In one embodiment, the fixing unit 21 is provided with a through hole, the adjusting rod 241 is a straight rod with external threads, the adjusting rod 241 passes through the through hole, and the locking part 242 is a locking nut (e.g., Figure 1 As shown, the locking nut is threaded onto the adjusting rod 241. Pushing the adjusting rod 241 along the first direction, and tightening the locking nut when in position, locks the relative position of the adjusting rod 241 and the fixed unit 21, thereby locking the length of the adjusting rod 241 extending beyond the fixed unit 21. This achieves adjustment and locking of the distance between the fixed unit 21 and the movable bracket 22. The structure is simple, the processing cost is low, the operation is convenient, and the locking reliability is high. It can be understood that, as an alternative implementation, the adjusting rod 241 can also be a smooth rod, and the locking part 242 can be an eccentric handle, which can also achieve length adjustment and locking of the adjusting rod 241.

[0046] In other embodiments, one end of the adjusting rod 241 is fixedly connected to the movable bracket 22, and the other end of the adjusting rod 241 is fixedly connected to the fixed unit 21. The adjusting rod 241 is a telescopic rod. The telescopic rod can adjust its length by extending and retracting itself. It has a simple structure and is easy to adjust. After the adjusting rod 241 has extended and retracted to its full position, it is locked by the locking part 242 to limit further extension and retraction of the telescopic rod, thereby locking the length of the adjusting rod 241. This also allows for adjusting and locking the distance between the fixed unit 21 and the movable bracket 22. The telescopic rod is a telescopic rod that can be locked by the locking part 242. It is used to lock the movable bracket 22 after the air tube plug 3 is inserted into the air tube socket 12, so that the movable bracket 22 remains in a fixed position.

[0047] Optionally, the telescopic rod can be a pneumatic push rod or an electric telescopic rod, which can automatically complete the length adjustment without manual operation, further reducing the difficulty of operation and improving the adjustment efficiency; the locking part 242 is a locking structure built into the telescopic rod, which can automatically lock after the telescopic rod is adjusted to the target length. For example, the pneumatic push rod can lock by maintaining pressure, and the electric telescopic rod has a built-in brake locking structure, both of which can stably maintain the length of the telescopic rod, ensure that the position of the movable bracket is fixed, and have high reliability.

[0048] In one embodiment, there are multiple connecting units 24, which are circumferentially distributed around the movable support 22. They can support the connection between the movable support 22 and the fixed unit 21 from multiple positions. During adjustment, the length of the multiple connecting units 24 can be adjusted synchronously to ensure that the movable support 22 is subjected to uniform force, avoid the movable support 22 from tilting, ensure the positional accuracy of each air pipe plug 3, and enable the air pipe plug 3 to be accurately aligned with the corresponding air pipe socket 12, thereby improving the accuracy of multi-line air connection.

[0049] In one embodiment, the clamping unit 23 includes a pressure plate 231 and an abutment member 232. The pressure plate 231 is disposed between the movable bracket 22 and the fixed unit 21, and the abutment member 232 is disposed between the pressure plate 231 and the fixed unit 21. The abutment member 232 is adapted to provide a clamping force to the pressure plate 231 toward the movable bracket 22. The abutment member 232 applies a thrust to the pressure plate 231 toward the movable bracket 22 in a first direction. Under the thrust of the abutment member 232, the pressure plate 231 is always pressed against the limiting part 32 of the tracheal plug 3, so that the limiting part 32 is clamped and fixed between the pressure plate 231 and the movable bracket 22, preventing the tracheal plug 3 from moving along the first direction after docking, further ensuring the connection stability between the tracheal plug 3 and the tracheal socket 12, and the continuous clamping force can counteract the reverse thrust of the internal air pressure on the tracheal plug 3 when the tracheal tube is ventilated, further preventing the joint from loosening and ensuring the stable sealing performance of the air circuit.

[0050] In one embodiment, the abutment member 232 is an elastic member, one end of which is connected to or abuts against the fixing unit 21, and the other end is connected to or abuts against the pressure plate 231. The elastic member is in a compressed state. The elastic member is used to provide an elastic force that presses the pressure plate 231 toward the movable bracket 22. The compressed elastic member can continuously apply an elastic clamping force to the pressure plate 231, ensuring that the pressure plate 231 always presses against the limiting part 32 of the air pipe plug 3. Even if the air connection device is vibrated, the elastic member can buffer the vibration and maintain the clamping force, further improving the clamping reliability. The structure is simple, the cost is low, and the maintenance is convenient.

[0051] Specifically, the pressure plate 231 is sleeved on the outside of the main body 31 of the endotracheal plug 3, the limiting part 32 is clamped between the pressure plate 231 and the movable bracket 22, and the abutment 232 is compressed between the pressure plate 231 and the fixed unit 21. Therefore, a clamping force is always applied to the pressure plate 231. This clamping force is transmitted to the limiting part 32 of the endotracheal plug 3 through the pressure plate 231, so that the endotracheal plug 3 is stably limited between the movable bracket 22 and the pressure plate 231. This ensures that the position of the endotracheal plug 3 is always fixed and will not shift due to ventilation pressure or equipment vibration, further improving the sealing and connection stability of the endotracheal plug 3 and the endotracheal socket 12.

[0052] Optionally, the abutment 232 is a compression spring, such as a gas spring, a regular spring, an air bladder, a pneumatic push rod, etc., which can stably provide the required clamping force, is easy to obtain and has low cost, and is stable, reliable and has a long service life.

[0053] In one embodiment, the pressure plate 231 is located inside the area enclosed by multiple connecting units 24, preventing interference between the pressure plate 231 and the connecting units 24, and ensuring that the actions of each component do not affect each other. Multiple abutment members 232 are distributed circumferentially around the pressure plate 231, which helps improve the uniformity of force on the pressure plate 231, ensuring consistent clamping force on the limiting portions 32 of each air pipe plug 3, preventing insufficient local clamping force that could lead to loosening of the air pipe plug 3, further enhancing the stable connection between the air pipe plug 3 and the air pipe socket 12, and ensuring the reliability of all airway connections. The fixed-end hose 4 is located inside the area enclosed by multiple abutment members 232, making the layout of each component more regular, reducing the risk of mutual interference between components, and improving the overall structural stability.

[0054] In one embodiment, the pressure plate 231 has a first through hole 2311 and the movable bracket 22 has a second through hole 221, which is correspondingly provided with the first through hole 2311; the main body 31 passes through the first through hole 2311 and the second through hole 221, and the limiting part 32 is clamped between the movable bracket 22 and the pressure plate 231. Wherein, the first through hole 2311 is a through hole that penetrates the pressure plate 231 along the first direction, and the second through hole 221 is a through hole that penetrates the movable bracket 22 along the first direction; the limiting part 32 is a convex ring connected to the outer peripheral surface of the main body 31, and the limiting part 32 is located in the middle of the main body 31 along the first direction, and the main body 31 has a channel for gas to flow through; the first through hole 2311 and the second through hole 221 are preferably round holes, the main body 31 is preferably a round tube, the limiting part 32 is a ring, the outer diameter of the main body 31 is smaller than the diameter of the first through hole 2311 and the second through hole 221, and the outer ring of the limiting part 32 is larger than the diameter of the first through hole 2311 and the second through hole 221.

[0055] Thus, by opening a first through hole 2311 on the pressure plate 231 and a second through hole 221 on the movable bracket 22, the main body 31 of the endotracheal plug 3 can be smoothly passed through the pressure plate 231 and the movable bracket 22. The limiting part 32 can be blocked by the end face of the movable bracket 22. With the pressure plate 231 applying a clamping force towards the limiting part 32, the limiting part 32 can be stably clamped between the pressure plate 231 and the movable bracket 22. The endotracheal plug 3 can be quickly installed and positioned without additional fixing structure. It is easy to disassemble and replace, and the limiting is stable and reliable. The endotracheal plug 3 will not move along the first direction.

[0056] In one embodiment, the main body 31 is clearance-fitted with the first through hole 2311 and the second through hole 221. The main body 31 is clearance-fitted with the pressure plate 231 and the movable bracket 22, respectively, so that the endotracheal plug 3 can float radially. Even if there is a certain centering deviation between the first connecting component 1 and the second connecting component 2, causing a slight offset between the center of the endotracheal socket 12 and the endotracheal plug 3, the endotracheal plug 3 can automatically adjust its radial position during insertion by floating radially, automatically aligning itself with the endotracheal socket 12, and achieving reliable docking between the endotracheal socket 12 and the endotracheal plug 3. This effectively improves the fault tolerance rate of the airway docking and further ensures the reliability of the docking.

[0057] Here, radial refers to the radial direction of the first through hole 2311 / second through hole 221. The tracheal plug 3 has a preset amount of floating degree of freedom (1 mm to 10 mm) in the radial direction to compensate for the alignment deviation between the tracheal plug 3 and the tracheal socket 12.

[0058] In one embodiment, the movable support 22 is a plate-shaped structure. Multiple second through holes 221 are opened on the movable support 22 corresponding to the multiple air pipe plugs 3, which can limit the multiple air pipe plugs 3 at the same time, adapt to the needs of multiple air circuit connections, and have a simple structure and are easy to process.

[0059] In one embodiment, a pressure balancing structure is provided on the endotracheal plug 3 and / or endotracheal socket 12. This pressure balancing structure is adapted to balance the gas back pressure at the interface between the endotracheal plug 3 and the endotracheal socket 12. It should be noted that under high-pressure gas supply conditions, the gas back pressure may cause the plug to automatically disengage from the socket, resulting in accidental gas interruption or even a safety accident. Therefore, by providing a pressure balancing structure on the endotracheal plug 3 and / or endotracheal socket 12, the gas back pressure at the interface between the endotracheal plug 3 and the endotracheal socket 12 is balanced, counteracting the reverse thrust of high-pressure gas on the endotracheal plug 3, preventing the endotracheal plug 3 from unexpectedly disengaging from the endotracheal socket 12 under high pressure, and further improving the stability and safety of the gas connection under high-pressure conditions.

[0060] The pressure balancing structure can be a conventional structure in the field of pipeline connection technology, such as a radial balancing hole on the side wall of the endotracheal plug. Specifically, a small radial hole is opened on the side wall of the insertion section of the endotracheal plug 3. One end of the small hole connects to the internal gas passage of the endotracheal plug 3, and the other end connects to the sealed cavity formed by the endotracheal plug 3 and the endotracheal socket 12. High pressure from the gas source enters the sealed cavity through the small hole, synchronizing the pressure in the sealed cavity with the pressure on the gas source side. The front end of the endotracheal plug 3 is subjected to the outward counterpressure of the sealed cavity, and the inner side of the endotracheal plug 3 is subjected to the inward pressure of the high pressure from the gas source. The two sides cancel each other out, which can prevent the endotracheal plug 3 from being pushed out.

[0061] The air connection device of this embodiment has an adaptive holding capability for different air supply pressures by providing a pressure balancing structure on the air pipe plug 3 and / or air pipe socket 12. For low-pressure air supply: when the air supply pressure is low, the back pressure of the gas acting on the interface between the air pipe plug 3 and the air pipe socket 12 is small, and the elastic force provided by the abutment member 232 is sufficient to overcome the back pressure. Therefore, the air pipe plug 3 will not come off by itself, and a reliable connection can be maintained. For high-pressure air supply: when the air supply pressure is high (e.g., exceeding 1 MPa), the gas back pressure may be greater than the elastic force of the abutment member 232, causing the air pipe plug 3 to be pushed back, resulting in an unexpected air supply interruption. Therefore, the connection structure between the air pipe plug 3 and the air pipe socket 12 can use a pressure balancing structure, thereby significantly reducing the axial back thrust and maintaining a reliable connection between the air pipe plug 3 and the air pipe socket 12.

[0062] The pneumatic connection device in this embodiment includes a first connection component 1 and a second connection component 2 with a split design. The mounting bracket 11 of the first connection component 1 is connected to an external device (such as a mobile workbench). Multiple air pipe sockets 12 are installed on the mounting bracket 11 according to actual needs, and the air pipe sockets 12 are connected to the hoses of the external device. The fixing unit 21 of the second connection component 2 is fixed to a fixed end (such as a frame or ground base). An adjusting rod 241 is installed on the fixing unit 21, and the extended end of the adjusting rod 241 is fixedly connected to a movable bracket 22. A locking part 242 (e.g., a locking nut or an eccentric handle) is provided on the adjusting rod 241 to lock the length of the adjusting rod 241 after it has been adjusted to the correct position. The abutment member 232 (compression spring) of the pressing unit 23 abuts against the pressure plate 231 and the fixing unit 21. The abutment member 232 is in a compressed state and provides a force to orient the pressure plate 231 toward the movable bracket 22. The elastic force of the directional compression ensures that the pressure plate 231 always presses against the movable bracket 22 in its natural state. The movable bracket 22 and the pressure plate 231 are spaced apart along the first direction, forming an installation gap between them. The limiting part 32 of the air pipe plug 3 is installed within this installation gap. The main body 31 of the air pipe plug 3 is radially fitted with the first through hole 2311 on the pressure plate 231 and the second through hole 221 on the movable bracket 22. That is, each air pipe plug 3 has a small gap radially between itself and the movable bracket 22 and the pressure plate 231, allowing the air pipe plug 3 to float radially within a certain range. One end of the air pipe plug 3 is connected to the fixed end hose 4 for air supply, and the other end is used to connect and cooperate with the air pipe socket 12.

[0063] The following describes the docking process between the second connecting component 2 and the first connecting component 1: Initially, the adjusting rod 241 is in the retracted state and the locking part 242 is in the locked state. The movable bracket 22 is close to the fixed unit 21, the abutment 232 is in the compressed state, and the pressure plate 231 is also in the position close to the fixed unit 21 along with the movable bracket 22. The air pipe plug 3 is retracted along with the movable bracket 22 and the pressure plate 231, away from the first connecting component 1.

[0064] Then, the first connecting component 1, connected to the external device, is moved to the working position (i.e., above the second connecting component 2 along the first direction). At this point, the air tube socket 12 on the mounting bracket 11 is approximately aligned with the air tube plug 3 of the second connecting component 2 (a certain deviation is allowed). Next, the operator loosens the locking part 242 and pushes the adjusting rod 241 to extend it out of the fixing unit 21. The adjusting rod 241 drives the movable bracket 22 to move towards the first connecting component 1. Since the pressure plate 231 is always pressed against the movable bracket 22 through the abutment 232, the air tube plug 3 moves forward with the movable bracket 22, and the front end of the air tube plug 3 gradually approaches and inserts into the corresponding air tube socket 12. Because the air tube plug 3 has a radial floating degree of freedom, even if there is a slight offset between the center of the air tube socket 12 and the air tube plug 3, the air tube plug 3 can automatically adjust its radial position during insertion, achieving reliable insertion.

[0065] Once the tracheal plug 3 is inserted into place, the operator locks the adjusting rod 241 through the locking part 242. At this time, the position of the movable bracket 22 is fixed, and the elasticity of the abutment 232 continuously presses the tracheal plug 3 toward the tracheal socket 12 through the pressure plate 231 to ensure the sealing of the docking interface.

[0066] The separation operation process is described below: When the air supply ends and separation is required, there is no need to operate the adjusting lever 241 or perform any unlocking action. The first connecting component 1 moves directly away from the second connecting component 2 (e.g., the workbench retracts). At this time, the first connecting component 1 moves the mounting bracket 11 and the air pipe socket 12 away together. The air pipe socket 12 exerts an outward pulling force on the air pipe plug 3. However, since the movable bracket 22 is in a locked state, it restricts the movement of the air pipe plug 3 away from the second connecting component 2, so the pulling force cannot pull the air pipe plug 3 out; instead, the movement of the air pipe socket 12 separates it from the air pipe plug 3, and the air pipe plug 3 exits from the air pipe socket 12, achieving automatic separation.

[0067] The pneumatic connection device in this embodiment has the following significant advantages: 1. Good docking tolerance: The air pipe plug 3 is assembled with the pressure plate 231 and the movable bracket 22 with a gap, which can float radially. Even if there is a certain alignment deviation between the first connecting component 1 and the second connecting component 2, the air pipe plug 3 can automatically align and insert into the air pipe socket 12.

[0068] 2. Simple and quick operation: The synchronous docking and locking of the multi-channel air pipe plugs 3 can be completed simply by adjusting the adjusting rod 241, without the need to plug and unplug them one by one.

[0069] 3. Reliable separation: By moving the first connecting component 1 directly away from the second connecting component 2, the tracheal plug 3 can be passively disconnected from the tracheal socket 12. The movable bracket 22 restricts the movement of the tracheal plug 3, preventing the tracheal plug 3 from being pulled out with the first connecting component 1. The separation action is simple and does not damage the tracheal connector.

[0070] 4. Adaptable to different pressure conditions: Under low pressure, the clamping force provided by the abutment part 232 of the clamping unit 23 can keep the air pipe plug 3 connected to the air pipe socket 12; under high pressure, the built-in pressure balancing structure counteracts the back pressure to prevent the air pipe plug 3 from disengaging from the air pipe socket 12, ensuring high safety.

[0071] 5. Compact structure and low cost: No complex sensors or driving components are required, making it suitable for scenarios with densely arranged multiple air passages.

[0072] Those skilled in the art will understand that the number of abutment members 232, the number of air pipe plugs 3, and the form of adjustment rod 241 (such as electric, pneumatic, or manual) in the above embodiments can all be adjusted according to actual needs; the locking part 242 can also be locked by thread, cam, or other means.

[0073] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A gas connection device, characterized in that, include: The first connecting component (1) includes a mounting bracket (11) and an air tube socket (12). The mounting bracket (11) includes a connecting part (111) and a mounting part (112) connected to each other. The connecting part (111) is adapted to be connected to an external device. The air tube socket (12) is disposed on the mounting part (112). The second connecting component (2) is disposed on one side of the first connecting component (1) along a first direction, and includes a fixing unit (21), a movable bracket (22), and a clamping unit (23). The movable bracket (22) is disposed between the fixing unit (21) and the first connecting component (1). The movable bracket (22) has an active state that moves relative to the fixing unit (21) and a locked state that is fixed relative to the fixing unit (21). The clamping unit (23) is disposed between the movable bracket (22) and the fixing unit (21) and is adapted to apply a clamping force to the movable bracket (22) along the first direction. An airway plug (3) is disposed on the second connecting component (2) and is disposed corresponding to the airway socket (12). The airway plug (3) includes a main body (31) and a limiting part (32). The limiting part (32) protrudes from the outer peripheral surface of the main body (31). The main body (31) passes through the movable bracket (22) along the first direction. The limiting part (32) is sandwiched between the pressing unit (23) and the movable bracket (22). The main body (31) is detachably inserted into the airway socket (12).

2. The gas connection device according to claim 1, characterized in that, The gas connection device further includes a connection unit (24), which is connected between the fixed unit (21) and the movable bracket (22). The connection unit (24) is a length-adjustable connector.

3. The gas connection device according to claim 2, characterized in that, The connection unit (24) includes: An adjusting rod (241) is provided, one end of which is fixedly connected to the movable bracket (22), and the other end of which passes through the fixed unit (21). The adjusting rod (241) is a straight rod and is movably inserted into the fixed unit (21); or, one end of the adjusting rod (241) is fixedly connected to the movable bracket (22), and the other end of which is fixedly connected to the fixed unit (21), and the adjusting rod (241) is a telescopic rod. A locking part (242) is provided on the adjusting rod (241) and can lock the length of the adjusting rod (241) between the fixed unit (21) and the movable bracket (22).

4. The gas connection device according to claim 1, characterized in that, The clamping unit (23) includes a pressure plate (231) and an abutment (232). The pressure plate (231) is disposed between the movable bracket (22) and the fixed unit (21). The abutment (232) is disposed between the pressure plate (231) and the fixed unit (21). The abutment (232) is adapted to provide a clamping force to the pressure plate (231) toward the movable bracket (22).

5. The gas connection device according to claim 4, characterized in that, The abutting member (232) is an elastic member. One end of the elastic member is connected to or abuts against the fixing unit (21), and the other end is connected to or abuts against the pressure plate (231). The elastic member is in a compressed state.

6. The gas connection device according to claim 4, characterized in that, The pressure plate (231) has a first through hole (2311), and the movable bracket (22) has a second through hole (221), with the second through hole (221) corresponding to the first through hole (2311); The main body (31) passes through the first through hole (2311) and the second through hole (221), and the limiting part (32) is sandwiched between the movable bracket (22) and the pressure plate (231).

7. The gas connection device according to claim 6, characterized in that, The main body (31) is in clearance fit with the first through hole (2311) and also in clearance fit with the second through hole (221).

8. The gas connection device according to claim 1, characterized in that, The mounting part (112) has a mounting hole (1121), and the air pipe socket (12) is detachably installed in the mounting hole (1121).

9. The gas connection device according to claim 8, characterized in that, The number of mounting holes (1121) is multiple.

10. The gas connection device according to any one of claims 1 to 9, characterized in that, The tracheal plug (3) and / or the tracheal socket (12) are provided with a pressure balancing structure, which is adapted to balance the gas back pressure at the interface between the tracheal plug (3) and the tracheal socket (12).

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