Actuator cylinder and pneumatic drive deployment device for hatch deployment

Abstract

The application discloses an actuating cylinder and a pneumatic driving expansion device for cabin door expansion. The actuating cylinder comprises an outer cylinder, end covers and an outer cylinder threaded end cover arranged at both ends of the outer cylinder, an inner cylinder arranged in the outer cylinder, a piston rod arranged in the inner cylinder, a head assembly and the piston rod being slidably connected, a piston lug connected to the other end of the inner cylinder, the center of the end cover being connected to one end of the piston rod through a threaded hole, a gas injection hole being arranged in the end cover, a first gas cavity being formed between the end cover and the head assembly of the inner cylinder, the one end of the piston rod being connected to the inner cylinder threaded end cover, the inner cylinder being divided into a first oil cavity and a second oil cavity by a piston head at the other end of the piston rod, a signal feedback system being arranged on one side of the outer cylinder threaded end cover, a gas injection hole being arranged on the other side of the outer cylinder threaded end cover, a second gas cavity being formed between the outer cylinder threaded end cover, the outer cylinder and the inner cylinder, and a floating piston being arranged between the piston head of the piston rod and the piston lug. The application can effectively drive the cabin door, landing gears and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of hatch drive, in particular to an actuating cylinder and a pneumatic drive unfolding device for hatch unfolding. BACKGROUND

[0002] In recent years, with the rapid development of aircraft, spacecraft and other vehicles, they are used more and more widely. As an important functional structural part of aircraft and spacecraft, the drive unfolding device is mainly responsible for opening and closing the hatch, landing gear and the like. At present, the electric drive device is usually used to provide power. With the development and progress of technology, the pneumatic drive unfolding device has also attracted certain attention.

[0003] The motor drive unfolding device requires high motor, heavy weight and slow time of retraction and deployment, which is not suitable for aircraft with high-speed landing, time requirement for hatch and landing gear deployment and flight weight. The current pneumatic drive unfolding device uses high-pressure gas, which has large movement impact when acting, and cannot feedback the in-place signal after unfolding. SUMMARY

[0004] The purpose of the present application is to provide an actuating cylinder and a pneumatic drive unfolding device for hatch unfolding, which solves the problems of current pneumatic drive unfolding device, such as large movement impact when acting and inability to feedback the in-place signal after unfolding, and can effectively drive the hatch, landing gear and the like.

[0005] The technical solution for achieving the purpose of the present application is an actuating cylinder for hatch unfolding, comprising an outer cylinder, an end cap and an outer cylinder threaded end cap arranged at both ends of the outer cylinder, an inner cylinder arranged in the outer cylinder, a piston rod arranged in the inner cylinder, the inner cylinder being slidably connected with the piston rod through a head assembly, the other end of the inner cylinder being connected with a piston ear, the center of the end cap being connected with one end of the piston rod through a threaded hole, the end cap being provided with a gas injection hole and forming a first gas cavity with the head assembly of the inner cylinder, one end of the piston rod being connected with the inner cylinder threaded end cap and dividing the inner cylinder into a first oil cavity and a second oil cavity through the piston head at the other end, one side of the outer cylinder threaded end cap being provided with a boss and installing a signal feedback system through the boss, the other side being provided with a gas injection hole, a second gas cavity being formed between the outer cylinder threaded end cap, the outer cylinder and the inner cylinder, and a floating piston being arranged between the piston head of the piston rod and the piston ear.

[0006] The head assembly comprises a steel ball, the relative position of the inner cylinder to the outer cylinder is locked through the steel ball, and the signals of the actuating cylinder being locked after unfolding and the actuating cylinder being unlocked are fed back through the signal feedback system.

[0007] Further, the end cap is connected with the hatch, the mounting hole for installing the joint bearing is arranged above the end cap, the end cap is connected with the outer cylinder through threads, the boss with a threaded through hole is arranged on one side of the end cap, and the unfolding guide bolt is installed.

[0008] Further, the inner cylinder threaded end cap is provided with a cylinder sleeved on the piston rod, and the head assembly comprises an unlocking sleeve, a limiting snap ring, a locking snap ring, a compression spring, a steel ball and a sliding sleeve;

[0009] The unlocking sleeve is arranged on the outer periphery of the piston rod cylinder, the outer part of the unlocking sleeve and the inner part of the sliding sleeve are provided with the locking snap ring, the outer part of the unlocking sleeve close to one end of the inner cylinder threaded end cap is connected with the limiting snap ring through threads, so as to limit the displacement of the locking snap ring during locking; the compression spring is arranged between the sliding sleeve and the locking snap ring, so as to provide a thrust for the locking snap ring when the locking snap ring is unfolded; the sliding sleeve is provided with six through holes in the circumferential direction for placing the steel ball, and the tail part of the sliding sleeve is provided with a slope structure for pushing the signal feedback system after the actuating cylinder is unfolded to the position.

[0010] The position matched with the steel ball on the outer cylinder is provided with an arc-shaped groove; the steel ball will be pushed into the groove on the outer cylinder by the locking snap ring after the actuating cylinder is unfolded to the position, so as to lock the actuating cylinder.

[0011] Further, one side of the outer cylinder threaded end cap is provided with a boss for installing the signal feedback system, and the other side is provided with a gas injection hole for installing the retracting air guide bolt; the end of the outer cylinder threaded end cap is provided with an arc-shaped groove for clamping the steel ball in the groove to realize locking after the actuating cylinder is unfolded to the position.

[0012] Further, the piston head of the piston rod is detachably connected with the adjustable flow hole, so that the control of the oil flow rate can be realized by replacing different specifications of the adjustable flow hole, and then the size of the oil cushion force is adjusted.

[0013] The first oil cavity is a storage area of the buffer oil before the actuating cylinder is unfolded, the buffer oil flows from the first oil cavity into the second oil cavity through the adjustable flow hole on the piston rod when the actuating cylinder is unfolded, and then flows from the second oil cavity into the first oil cavity through the adjustable flow hole on the piston rod when the actuating cylinder is retracted.

[0014] Further, the inner cylinder and the piston ear are fastened by the fastening adjusting screw, the position of the fastening adjusting screw is adjusted to keep the end cap plane and the piston ear plane in one plane; the piston ear is connected with the tail part of the inner cylinder through threads, and the upper part is provided with a mounting hole for installing the joint bearing.

[0015] Further, the floating piston is composed of a floating piston body and a floating piston screw plug, the floating piston is installed between the cavity between the piston head and the piston ear of the piston rod, so as to prevent oil leakage; the floating piston body is punched in the middle, and then sealed by the floating piston screw plug after the floating piston body is installed.

[0016] Further, the signal feedback system comprises a trigger head, a trigger spring, a spring pressing sheet, a spring stop disc, a protection box and a micro switch.

[0017] The trigger head is installed in the recess of the outer cylinder threaded end cover, when the sliding sleeve moves to the end, the slope structure of the sliding sleeve end pushes the trigger head to move downward; the trigger spring provides support force for the trigger head before the actuator cylinder is unlocked, and provides rebound force for the trigger head to restore the original state after unlocking; the spring pressing plate is located below the trigger head, and the trigger head is pushed downward to press the spring pressing plate, which is fixed on the micro switch through a screw; the spring stop disc is installed in the recess of the outer cylinder threaded end cover through threads to support the trigger spring; the protection box is installed on the boss on one side of the outer cylinder threaded end cover, which packages the entire signal feedback system and fixes the micro switch to prevent the signal feedback system from being damaged; the micro switch is a signal output mechanism, when the trigger head presses the spring pressing plate, the spring pressing plate triggers the micro switch, which outputs the deployment locking signal, and when the trigger head rebounds to release the pressure on the spring pressing plate, the micro switch outputs the unlocking signal.

[0018] A pneumatic drive deployment device for cabin door deployment, comprising the above-mentioned actuator cylinder, and further comprising a gas cylinder, an adapter, a master control electromagnetic valve, a master gas supply pipeline, a retraction control electromagnetic valve, a retraction pipeline, a deployment control electromagnetic valve, a deployment pipeline, a deployment guide bolt and a retraction guide bolt;

[0019] The gas cylinder is the power source of the deployment device, the adapter is a switching device between the gas cylinder port and the master control electromagnetic valve; the master control electromagnetic valve controls the opening and closing of the master gas supply pipeline; the master gas supply pipeline is a gas supply hose connected between the master control electromagnetic valve and the adapter; the retraction control electromagnetic valve is a gas supply switch for controlling the retraction pipeline, which is opened when the actuator cylinder needs to be retracted; the retraction pipeline is a gas supply hose connected between the retraction control electromagnetic valve and the retraction guide bolt; the deployment control electromagnetic valve is a gas supply switch for controlling the deployment pipeline, which is opened when the actuator cylinder needs to be deployed; the deployment pipeline is a gas supply hose connected between the deployment control electromagnetic valve and the deployment guide bolt; the deployment guide bolt is a switching guide mechanism between the deployment pipeline and the actuator cylinder; the actuator cylinder is an execution mechanism for driving the deployment device, which is deployed after gas intake to achieve the deployment of the cabin door; the retraction guide bolt is a switching guide mechanism between the retraction pipeline and the actuator cylinder.

[0020] A method for driving the deployment of a cabin door using the above-mentioned pneumatic drive deployment device, specifically as follows:

[0021] After the system sends out the deployment instruction, the total control electromagnetic valve and the deployment control electromagnetic valve are opened, and the high-pressure gas in the gas cylinder enters the first gas cavity in the actuator cylinder through the total control electromagnetic valve, the total gas pipeline, the deployment control electromagnetic valve, the deployment pipeline and the deployment guide bolt in turn; then the high-pressure gas pushes the head assembly to move the inner cylinder to realize deployment, and when the inner cylinder moves, the piston rod moves in the opposite direction, at this time, the oil in the first oil cavity flows to the second oil cavity through the oil hole at the end of the piston rod and the adjustable flow hole, thereby providing oil buffer force for the deployment process; when the end of the sliding sleeve collides with the end of the outer cylinder threaded end cover, the limitation of the outer cylinder inner wall to the steel ball is eliminated, the steel ball falls into the arc-shaped groove in the inner wall of the outer cylinder threaded end cover under the pushing force of the locking snap ring, and at the same time, the limiting action of the steel ball on the locking snap ring is released, the locking snap ring moves under the action of the compression spring, thereby further pressing the steel ball in the arc-shaped groove, so that the relative position of the inner cylinder and the sliding sleeve and the outer cylinder and the outer cylinder threaded end cover is locked, deployment locking is realized; in addition, when the sliding sleeve moves to the end of the outer cylinder threaded end cover, the slope structure at the end of the sliding sleeve pushes the trigger head to move downward to press the spring sheet, the micro switch is triggered through the spring sheet, and the total signal is fed back to the micro switch, at this time, the deployment control electromagnetic valve is powered off and closed, and the gas cylinder stops gas supply;

[0022] When the system sends out the retraction command, the retraction control electromagnetic valve is opened, and the high-pressure gas in the gas cylinder enters the second gas cavity in the actuator cylinder through the total control electromagnetic valve, the total gas pipeline, the retraction control electromagnetic valve, the retraction pipeline and the retraction guide bolt in turn; the high-pressure gas enters the inside through the slope structure of the sliding sleeve and the air hole in the side wall, pushes the unlocking sleeve to move the limiting snap ring, the limiting snap ring pushes the locking snap ring to extrude the compression spring after touching the locking snap ring, the compression spring is compressed under stress, the locking snap ring moves to release the limitation of the steel ball, the steel ball falls off from the groove in the outer cylinder threaded end cover to realize unlocking, and the high-pressure gas continues to push the sliding sleeve to move; the limiting action of the sliding sleeve on the trigger head is released, the trigger head is reset under the action of the trigger spring, the spring sheet rebounds, the micro switch outputs an unlocking success signal, and after a delay of a predetermined time, the retraction control electromagnetic valve and the total control electromagnetic valve are closed, the gas cylinder stops gas supply, and the retraction of the driving deployment device is realized; in addition, during retraction, the buffer oil flows from the second oil cavity to the first oil cavity through the adjustable flow hole and the oil hole at the end of the piston rod, thereby providing oil buffer force for the retraction process.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] The gas driving + oil buffer mode is adopted, which is not prone to oil leakage problems, can effectively reduce the high impact generated by gas driving, can control the oil buffer force by replacing adjustable flow holes of different specifications, and can meet different deployment speed requirements by adjusting the inlet gas pressure.

[0025] The signal feedback system is added, which can realize the signal feedback of the driving device at the first time after the expansion locking and the retraction unlocking, and increase the reliability.

[0026] Through the unlocking design, the driving expansion device can be unlocked again after the expansion locking by controlling the retraction electromagnetic valve to supply gas to the retraction pipeline, so as to realize the rapid and convenient reuse of the driving expansion device. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a general diagram of the driving expansion device;

[0028] Figure 2 It is a structure composition diagram of the actuator cylinder;

[0029] Figure 3 It is a structure composition of the floating piston;

[0030] Figure 4 It is a structure composition of the signal feedback system;

[0031] Figure 5 It is a locking process of the steel ball lock;

[0032] Figure 6 It is an unlocking process of the steel ball lock;

[0033] Figure 7 It is a buffer solution flow direction in the expansion stage;

[0034] Figure 8 It is a buffer solution flow direction in the retraction stage.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1-gas cylinder, 2-adaptor, 3-total control electromagnetic valve, 4-total gas pipeline, 5-retraction control electromagnetic valve, 6-retraction pipeline, 7-control electromagnetic valve, 8-expansion pipeline, 9-expansion guide gas bolt, 10-actuator cylinder, 1001-end cover, 1002-sealing ring, 1003-steel ball, 1004-sliding sleeve, 1005-first oil cavity, 1006-outer cylinder, 1007-outer cylinder threaded end cover, 1008-adjustable flow hole, 1009-floating piston, 1010-tight adjusting screw, 1011-piston lug, 1012-second oil cavity, 1013-signal feedback system, 1014-piston rod, 1015-inner cylinder, 1016-inner cylinder threaded end cover, 1017-limiting ring, 1018-locking ring, 1019-compression spring, 1020-unlocking sleeve, 1021-first air cavity, 1022-knuckle bearing, 1023-second air cavity, 1013-1-trigger head, 1013-2-trigger spring, 1013-3-spring pressing piece, 1013-4-spring stop disc, 1013-5-protection box, 1013-6-micro switch. DETAILED DESCRIPTION

[0037] The application will be described in further detail below with reference to the drawings.

[0038] As Figures 1-8 shown, a pneumatic drive deployment device for hatch deployment. The device is used for hatch deployment drive, which includes gas cylinder 1, adapter 2, master control solenoid valve 3, total gas pipeline 4, recovery control solenoid valve 5, recovery pipeline 6, deployment control solenoid valve 7, deployment pipeline 8, deployment gas guide bolt 9, actuator 10 and recovery gas guide bolt 11.

[0039] Gas cylinder 1 is the power source of the deployment device, and the standard shelf product is selected; adapter 2 is the adapter between the mouth of gas cylinder 1 and master control solenoid valve 3, to adapt the interface of gas cylinder 1 and master control solenoid valve 3; master control solenoid valve 3 can control the switch of total gas pipeline 4 to control the gas outlet of gas cylinder 1; total gas pipeline 4 is the gas pipeline connected between master control solenoid valve 3 and adapter 2, for gas transmission; recovery control solenoid valve 5 is used as a gas supply switch to control recovery pipeline 6, and is opened when actuator 10 needs to be retracted; recovery pipeline 6 is the gas pipeline connected between recovery control solenoid valve 5 and recovery gas guide bolt 11; deployment control solenoid valve 7 is used as a gas supply switch to control deployment pipeline 8, and is opened when actuator 10 needs to be deployed; deployment pipeline 8 is the gas pipeline connected between deployment control solenoid valve 7 and deployment gas guide bolt 9; deployment gas guide bolt 9 is the adapter gas guide mechanism between deployment pipeline 8 and actuator 10; actuator 10 is the execution mechanism of the drive deployment device, which expands after gas intake to realize the deployment of the hatch; recovery gas guide bolt 11 is the adapter gas guide mechanism between recovery pipeline 6 and actuator 10.

[0040] The actuator cylinder 10 is composed of end cap 1001, sealing ring 1002, steel ball 1003, sliding sleeve 1004, first oil cavity 1005, outer cylinder 1006, outer cylinder threaded end cap 1007, adjustable flow hole 1008, floating piston 1009, locking adjusting screw 1010, piston lug 1011, second oil cavity 1012, signal feedback system 1013, piston rod 1014, inner cylinder 1015, inner cylinder threaded end cap 1016, limit snap ring 1017, locking snap ring 1018, compression spring 1019, unlocking sleeve 1020, first gas cavity 1021 and joint bearing 1022. The end cap 1001 is connected with the hatch, and a mounting hole for mounting the joint bearing 1022 is formed in the upper portion of the end cap 1001. The end cap 1001 is connected with the outer cylinder 1006 through threads. A boss with a threaded through hole is formed in one side of the end cap 1001 for mounting the unfolding gas guide bolt 9. A threaded hole for mounting the piston rod 1014 is also formed in the center of the end cap 1001. The sealing ring 1002 plays a sealing role to prevent the leakage of gas and oil in the actuator cylinder 10. The steel ball 1003 is locked in the groove on the outer cylinder 1006 by the locking snap ring 1018 after the actuator cylinder 10 is unfolded to the position, and the steel ball 1003 is six in total. The sliding sleeve 1004 is provided with six through holes in the circumferential direction for placing the steel ball 1003. The diameter of the hole is slightly larger than that of the steel ball 1003, so that when the arc-shaped groove on the outer cylinder 1006 is located above the steel ball 1003, the steel ball 1003 can be smoothly pushed into the groove. The tail portion of the sliding sleeve 1004 is provided with a chamfer for pushing the signal feedback system 1013 after the actuator cylinder 10 is unfolded to the position. The diameter of the sliding sleeve 1004 near the chamfer end is slightly smaller, and a ventilation hole is formed in the side wall for the gas to enter the interior when the actuator cylinder 10 is retracted, pushing the limit snap ring 1017 to be unlocked. The first oil cavity 1005 is a storage area for buffering oil before the actuator cylinder 10 is unfolded. When unfolded, the buffering oil flows from the first oil cavity 1005 into the second oil cavity 1012 through the adjustable flow hole 1008 on the piston rod 1014. When retracted, the buffering oil flows from the second oil cavity 1012 into the first oil cavity 1005 through the adjustable flow hole 1008 on the piston rod 1014. The outer surface of the outer cylinder 1006 is provided with threads at both ends for connecting the end cap 1001 and the outer cylinder threaded end cap 1007. The outer cylinder threaded end cap 1007 is provided with a boss on one side for mounting the signal feedback system 1013, and an injection hole is formed on the other side for mounting the retraction gas guide bolt 11. An arc-shaped groove is formed at the end of the outer cylinder threaded end cap 1007 for locking the steel ball 1003 in the groove after the actuator cylinder 10 is unfolded to the position. The adjustable flow hole 1008 is installed at the tail of the piston rod 1014. The oil flow rate can be controlled by replacing different specifications of the adjustable flow hole 1008, thereby adjusting the size of the oil buffering force.The floating piston 1009 is composed of a floating piston body 1009-1 and a floating piston nut 1009-2, which is installed between the cavity between the tail of the piston rod 1014 and the piston lug 1011 to prevent oil leakage. Considering that the cavity is full of oil and air when the floating piston 1009 is installed, the floating piston 1009 is not easy to install. Therefore, a hole is punched in the middle of the floating piston body 1009-1. After the floating piston body 1009-1 is installed, the floating piston nut 1009-2 is used for sealing. The tight adjusting screw 1010 is used to tighten the inner cylinder 1015 and the piston lug 1011. Due to the uncertainty of threaded connection, the position of the tight adjusting screw 1010 can be adjusted to keep the plane of the end cover 1001 and the plane of the piston lug 1011 in the same plane. The piston lug 1011 is connected with the tail of the inner cylinder 1015 through threads, and a mounting hole for installing the joint bearing 1022 is opened at the top. The second oil cavity 1012 is the cavity of the floating piston 1009 and the tail of the piston rod 1014. The signal feedback system 1013 is used to feedback signals after the actuator 10 is expanded to the locking position and after the actuator 10 is unlocked. The piston rod 1014 is connected with the end cover 1001 through threads. The tail of the piston rod 1014 is provided with a threaded hole for installing the adjustable flow hole 1008, and an oil hole is also provided for buffering oil flow. The tail of the inner cylinder 1015 is provided with two through holes for installing the tight adjusting screw 1010. The inner cylinder 1015 is connected with the inner cylinder threaded end cover 1016 through threads. The inner cylinder threaded end cover 1016 is installed on the left end of the inner cylinder 1015 through threads to seal the oil in the inner cylinder 1015. The limiting snap ring 1017 is installed on the right end of the unlocking sleeve 1020 through threads to limit the displacement of the locking snap ring 1018 during the locking process. The locking snap ring 1018 is installed inside the sliding sleeve 1004. The locking snap ring 1018 presses the steel ball 1003 in the through hole of the sliding sleeve 1004, and the steel ball 1003 also limits the displacement of the locking snap ring 1018. When the steel ball 1003 falls into the groove, the limiting effect of the steel ball 1003 on the locking snap ring 1018 is removed, and the locking snap ring 1018 moves to the right under the action of the spring and presses the steel ball 1003 in the groove. The compression spring 1019 is between the sliding sleeve 1004 and the locking snap ring 1018 to provide a thrust force for the locking snap ring 1018 during expansion. The unlocking sleeve 1020 provides support for the structures such as the sliding sleeve 1004 and the compression spring 1019, and drives the locking snap ring 1018 to press the compression spring 1019 when the actuator 10 is retracted and unlocked, thereby achieving unlocking. The air cavity 1021 is a chamber for storing the gas delivered during expansion and retraction. The joint bearing 1022 is installed on the end cover 1001 and the piston lug 1011, and can bear a large load. When the supporting shaft and the shaft shell hole have a large concentricity, the joint bearing 1022 can still work normally.

[0041] The signal feedback system 1013 is composed of a trigger head 1013-1, a trigger spring 1013-2, a spring pressing plate 1013-3, a spring stop disc 1013-4, a protective box 1013-5 and a micro switch 1013-6. The trigger head 1013-1 is installed in the concave hole of the outer cylinder threaded end cover 1007. When the sliding sleeve 1004 moves to the end, the slope structure at the end of the sliding sleeve 1004 pushes the trigger head 1013-1 to move downward. The trigger spring 1013-2 provides support force for the trigger head 1013-1 before the action cylinder 10 is unlocked, and provides rebound force for the trigger head 1013-1 to restore the original state after being unlocked. The spring pressing plate 1013-3 is located below the trigger head 1013-1. When the trigger head 1013-1 is pushed to move downward, the spring pressing plate 1013-3 is pressed down, which is fixed on the micro switch 1013-6 by a screw. The spring stop disc 1013-4 is installed in the concave hole of the outer cylinder threaded end cover 1007 by threads, which supports the trigger spring 1013-2. The protective box 1013-5 is installed on the boss on one side of the outer cylinder threaded end cover 1007, which packages the whole signal feedback system 1013 and fixes the micro switch 1013-6, preventing the signal feedback system 1013 from being damaged. The micro switch 1013-6 is a signal output mechanism. When the trigger head 1013-1 presses down the spring pressing plate 1013-3, the spring pressing plate 1013-3 triggers the micro switch 1013-6, which outputs the signal of the deployment lock in place. When the trigger head 1013-1 rebounds to release the pressure on the spring pressing plate 1013-3, the micro switch 1013-6 outputs the unlocking signal.

[0042] After the system sends out the deployment instruction, the general control electromagnetic valve 3 and the deployment control electromagnetic valve 7 are opened, and the high-pressure gas in the gas cylinder 1 enters the first gas cavity 1021 in the actuator cylinder 10 through the general control electromagnetic valve 3, the general gas conveying pipeline 4, the deployment control electromagnetic valve 7, the deployment pipeline 8 and the deployment guide gas bolt 9 in turn. Then the high-pressure gas pushes the sliding sleeve 1004 to drive the inner cylinder 1015 to move rightward to realize deployment. When the inner cylinder 1015 moves rightward, the piston rod 1014 moves leftward relatively. At this time, the oil in the first oil cavity 1005 flows to the second oil cavity 1012 through the oil hole at the end of the piston rod 1014 and the adjustable flow hole 1008, thereby providing oil buffer force for the deployment process. When the end of the sliding sleeve 1004 hits the end of the outer cylinder threaded end cover 1007, the limiting of the steel ball 1003 by the inner wall of the outer cylinder 1006 is eliminated, the steel ball 1003 falls into the arc-shaped groove in the inner wall of the outer cylinder threaded end cover 1007 under the pushing force of the locking snap ring 1018, and the limiting action of the steel ball 1003 on the locking snap ring 1018 is eliminated. The locking snap ring 1018 moves rightward under the action of the compression spring 1019, thereby further pressing the steel ball 1003 in the arc-shaped groove, so that the relative positions of the inner cylinder 1015 and the sliding sleeve 1004 and the outer cylinder 1006 and the outer cylinder threaded end cover 1007 are locked, deployment locking is realized. In addition, when the sliding sleeve 1004 is about to move to the end of the outer cylinder threaded end cover 1007, the slope structure at the end of the sliding sleeve 1004 pushes the trigger head 1013-1 to move downward to press the spring pressing piece 1013-3, the spring pressing piece 1013-3 triggers the micro switch 1013-6, and the micro switch 1013-6 feeds back to the general signal. At this time, the deployment control electromagnetic valve 7 is powered off and closed, and the gas cylinder 1 stops gas conveying.

[0043] When the system sends out the retraction command, the retraction control electromagnetic valve 5 is opened, and the high-pressure gas in the gas cylinder 1 enters the second gas cavity 1023 in the actuator cylinder 10 through the general control electromagnetic valve 3, the general gas conveying pipeline 4, the retraction control electromagnetic valve 5, the retraction pipeline 6 and the retraction guide gas bolt 11 in turn. After the high-pressure gas enters the actuator cylinder 10, the gas flow direction is as follows Figure 6As shown, because the sliding sleeve 1004 is slightly smaller in diameter near the chamfered end, and has a vent hole in the side wall, high-pressure gas can enter the interior from here, pushing the unlocking sleeve 1020 to move the limiting snap ring 1017 to the left, the limiting snap ring 1017 pushes the locking snap ring 1018 to compress the compression spring 1019 after touching the locking snap ring 1018, the compression spring 1019 is compressed under stress, the locking snap ring 1018 moves to the left to release the limiting of the steel ball 1003, the steel ball 1003 falls out of the groove of the outer cylinder threaded end cover 1007 to achieve unlocking, the high-pressure gas continues to push the sliding sleeve 1004 to move to the left. The limiting effect of the sliding sleeve 1004 on the trigger head 1013-1 is released, the trigger head 1013-1 resets under the action of the trigger spring 1013-2, the spring pressing piece 1013-3 rebounds, the micro switch 1013-6 outputs an unlocking success signal, and after a predetermined delay time, the control solenoid valve 5 and the master control solenoid valve 3 are withdrawn to be closed, the gas cylinder 1 stops gas supply, and the driving deployment device is retracted. In addition, during retraction, the buffer oil flows from the second oil chamber 1012 to the first oil chamber 1005 through the adjustable flow hole 1008 and the oil hole at the end of the piston rod 1014, providing oil buffer force for the retraction process.

[0044] The above specific embodiments further illustrate the purpose, technical solutions and advantages of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An actuating cylinder for hatch door deployment, characterized by, The outer cylinder (1006) is provided with an end cover (1001) and an outer cylinder threaded end cover (1007) at both ends, an inner cylinder (1015) is arranged in the outer cylinder (1006), a piston rod (1014) is arranged in the inner cylinder (1015), the inner cylinder (1015) is slidably connected with the piston rod (1014) through a head assembly, the inner cylinder (1015) is connected with a piston ear (1011) at the other end, the center of the end cover (1001) is connected with one end of the piston rod (1014) through a threaded hole, the end cover (1001) is provided with a gas injection hole, a first gas cavity (1021) is formed between the end cover (1001) and the head assembly of the inner cylinder (1015), the piston rod (1014) is connected with an inner cylinder threaded end cover (1016) at one end, and the inner cylinder is divided into a first oil cavity (1005) and a second oil cavity (1012) by a piston head at the other end, the outer cylinder threaded end cover (1007) is provided with a boss on one side and is provided with a signal feedback system (1013) through the boss, and is provided with a gas injection hole on the other side, a second gas cavity (1023) is formed between the outer cylinder threaded end cover (1007), the outer cylinder (1006) and the inner cylinder (1015), and a floating piston (1009) is arranged between the piston head of the piston rod (1014) and the piston ear (1011); The head assembly comprises a steel ball (1003), the position of the inner cylinder (1015) relative to the outer cylinder (1006) is locked through the steel ball (1003), and signals are fed back through the signal feedback system (1013) after the deployment cylinder (10) is deployed to the locking position and after the deployment cylinder (10) is unlocked; The end cover (1001) is connected with a hatch, a mounting hole for mounting a knuckle bearing (1022) is formed in the upper portion of the end cover (1001), the end cover (1001) is connected with the outer cylinder (1006) through threads, a boss with a threaded through hole is formed on one side of the end cover (1001), and a deployment guide gas bolt (9) is mounted on the boss; The inner cylinder threaded end cover (1016) is provided with a cylinder which is sleeved on the outer piston rod (1014), and the head assembly comprises an unlocking sleeve (1020), a limiting snap ring (1017), a locking snap ring (1018), a compression spring (1019), a steel ball (1003) and a sliding sleeve (1004); The unlocking sleeve (1020) is arranged on the outer periphery of the piston rod cylinder, the locking snap ring (1018) is arranged outside the unlocking sleeve (1020) and inside the sliding sleeve (1004), the unlocking sleeve (1020) is connected with the limiting snap ring (1017) through threads at one end close to the inner cylinder threaded end cover (1016), so as to limit the displacement of the locking snap ring (1018) during locking; the compression spring (1019) is arranged between the sliding sleeve (1004) and the locking snap ring (1018), so as to provide a thrust for the locking snap ring (1018) during deployment; the sliding sleeve (1004) is provided with six through holes in the circumferential direction for placing the steel ball (1003), and the tail portion of the sliding sleeve (1004) is provided with a slope structure for pushing the signal feedback system (1013) after the deployment cylinder (10) is deployed to the locking position. The outer cylinder (1006) is provided with an arc-shaped groove at the position matched with the steel ball (1003); the steel ball (1003) is locked by the locking ring (1018) and is inserted into the groove on the outer cylinder (1006) after the actuating cylinder (10) is deployed to the position, thereby locking the actuating cylinder (10); The outer cylinder threaded end cover (1007) is provided with a boss on one side for installing a signal feedback system (1013), and is provided with a gas injection hole on the other side for installing a retractable guide gas bolt (11); the outer cylinder threaded end cover (1007) is provided with an arc-shaped groove at the end for locking the steel ball (1003) in the groove after the actuating cylinder (10) is deployed to the position, thereby achieving locking; The piston head of the piston rod (1014) is detachably connected to the adjustable flow hole (1008); the oil flow rate can be controlled by replacing different specifications of the adjustable flow hole (1008), thereby adjusting the size of the oil cushion force; The first oil cavity (1005) is a storage area for the oil cushion before the deployment of the actuating cylinder (10); during the deployment, the oil cushion flows from the first oil cavity (1005) to the second oil cavity (1012) through the adjustable flow hole (1008) on the piston rod (1014); during the retraction, the oil cushion flows from the second oil cavity (1012) to the first oil cavity (1005) through the adjustable flow hole (1008) on the piston rod (1014).

2. The actuator cylinder according to claim 1, characterized in that The inner cylinder (1015) and the piston ear (1011) are fastened by the fastening adjusting screw (1010); the plane of the end cover (1001) and the plane of the piston ear (1011) are kept in the same plane by adjusting the position of the fastening adjusting screw (1010); the piston ear (1011) is threadedly connected to the tail of the inner cylinder (1015) and is provided with a mounting hole for installing a knuckle bearing (1022) at the top.

3. The actuator cylinder of claim 2, wherein The floating piston (1009) is composed of a floating piston body (1009-1) and a floating piston screw (1009-2); the floating piston (1009) is installed between the cavity between the piston head of the piston rod (1014) and the piston ear (1011) to prevent oil leakage; the floating piston body (1009-1) is provided with a hole in the middle; after the floating piston body (1009-1) is installed, the floating piston screw (1009-2) is used for sealing.

4. The actuator cylinder of claim 3, wherein The signal feedback system (1013) includes a trigger head (1013-1), a trigger spring (1013-2), a spring pressing plate (1013-3), a spring stop disc (1013-4), a protection box (1013-5), and a micro switch (1013-6); The trigger head (1013-1) is installed in the recess of the outer cylinder threaded end cover (1007), when the sliding sleeve (1004) moves to the near end, the slope structure at the end of the sliding sleeve (1004) pushes the trigger head (1013-1) to move downward; the trigger spring (1013-2) provides support force for the trigger head (1013-1) before the actuator cylinder (10) is unlocked, and provides rebound force for the trigger head (1013-1) after being unlocked to restore the trigger head (1013-1) to the original state; the spring pressing plate (1013-3) is located below the trigger head (1013-1), and when the trigger head (1013-1) is pushed to move downward, the spring pressing plate (1013-3) is pressed down, which is fixed on the micro switch (1013-6) through a screw; the spring stop disc (1013-4) is installed in the recess of the outer cylinder threaded end cover (1007) by screwing, and is used to support the trigger spring (1013-2); the protection box (1013-5) is installed on the boss on one side of the outer cylinder threaded end cover (1007), which packages the entire signal feedback system (1013) and fixes the micro switch (1013-6), preventing the signal feedback system (1013) from being damaged; the micro switch (1013-6) is a signal output mechanism, when the trigger head (1013-1) presses down the spring pressing plate (1013-3), the spring pressing plate (1013-3) triggers the micro switch (1013-6), which outputs the deployment lock signal, when the trigger head (1013-1) rebounds to release the pressure on the spring pressing plate (1013-3), the micro switch (1013-6) outputs the unlock signal.

5. A pneumatic drive deployment device for hatch door deployment, characterized in that The actuator cylinder comprises a gas cylinder (1), an adapter (2), a master control electromagnetic valve (3), a master gas supply pipeline (4), a retraction control electromagnetic valve (5), a retraction pipeline (6), a deployment control electromagnetic valve (7), a deployment pipeline (8), a deployment guide gas bolt (9), and a retraction guide gas bolt (11). The gas cylinder (1) is the power source of the unfolding device, the adapter (2) is the adapter between the gas cylinder (1) and the total control electromagnetic valve (3); the total control electromagnetic valve (3) controls the opening and closing of the total gas supply pipeline (4); the total gas supply pipeline (4) is the gas supply hose connected between the total control electromagnetic valve (3) and the adapter; the retraction control electromagnetic valve (5) is the gas supply switch of the retraction pipeline (6) and is opened when the actuating cylinder (10) needs to be retracted; the retraction pipeline (6) is the gas supply hose connected between the retraction control electromagnetic valve (5) and the retraction gas guide bolt (11); the unfolding control electromagnetic valve (7) is the gas supply switch of the unfolding pipeline (8) and is opened when the actuating cylinder (10) needs to be unfolded; the unfolding pipeline (8) is the gas supply hose connected between the unfolding control electromagnetic valve (7) and the unfolding gas guide bolt (9); the unfolding gas guide bolt (9) is the adapter between the unfolding pipeline (8) and the actuating cylinder (10); the actuating cylinder (10) is the execution mechanism of the driving unfolding device, and the unfolding is realized after the gas is supplied to achieve the unfolding of the hatch; the retraction gas guide bolt (11) is the adapter between the retraction pipeline (6) and the actuating cylinder (10).

6. A method of deploying a hatch using the pneumatic deployment device of claim 5, wherein, The specific implementation is as follows: After the system sends out the deployment instruction, the general control electromagnetic valve (3) and the deployment control electromagnetic valve (7) are opened, the high-pressure gas in the gas cylinder (1) sequentially passes through the general control electromagnetic valve (3), the general gas pipeline (4), the deployment control electromagnetic valve (7), the deployment pipeline (8) and the deployment guide bolt (9) into the first gas cavity (1021) in the actuator cylinder (10); then the high-pressure gas pushes the head assembly to drive the inner cylinder (1015) to move to realize the deployment, when the inner cylinder (1015) moves, the piston rod (1014) moves in the opposite direction, at this time, the oil in the first oil cavity (1005) flows to the second oil cavity (1012) through the oil hole at the end of the piston rod (1014) and the adjustable flow hole (1008), thereby providing oil buffer force for the deployment process; when the end of the sliding sleeve (1004) collides with the end of the outer cylinder threaded end cover (1007), the limit of the steel ball (1003) by the inner wall of the outer cylinder (1006) is eliminated, the steel ball (1003) falls into the arc-shaped groove in the inner wall of the outer cylinder threaded end cover (1007) under the pushing force of the locking snap ring (1018), at the same time, the limiting action of the steel ball (1003) on the locking snap ring (1018) is released, the locking snap ring (1018) moves under the action of the compression spring (1019), thereby further pressing the steel ball (1003) in the arc-shaped groove, so that the relative position of the inner cylinder (1015) and the sliding sleeve (1004) and the outer cylinder (1006) and the outer cylinder threaded end cover (1007) is locked, the deployment is locked; in addition, when the sliding sleeve (1004) moves to the end of the outer cylinder threaded end cover (1007), the slope structure at the end of the sliding sleeve (1004) will push the trigger head (1013-1) to move downward to press the spring pressing piece (1013-3), the spring pressing piece (1013-3) triggers the micro switch (1013-6), the micro switch (1013-6) feeds back to the general signal, at this time, the deployment control electromagnetic valve (7) is powered off and closed, and the gas cylinder (1) stops gas supply; When the system issues a retraction command, the retraction control solenoid valve (5) opens, and the high-pressure gas in the gas cylinder (1) sequentially passes through the master control solenoid valve (3), the master gas pipeline (4), the retraction control solenoid valve (5), the retraction pipeline (6), and the retraction guide bolt (11) into the second gas cavity (1023) of the actuator cylinder (10); the high-pressure gas enters the interior through the slope structure of the sliding sleeve (1004) and the air holes of the side wall, pushes the unlocking sleeve (1020) to move, and the limit ring (1017) touches the locking ring (1018) to push the locking ring (1018) to compress the compression spring (1019); the compression spring (1019) is compressed under stress, the locking ring (1018) moves to release the limit of the steel ball (1003), the steel ball (1003) falls out of the groove of the outer cylinder threaded end cover (1007) to achieve unlocking, and the high-pressure gas continues to push the sliding sleeve (1004) to move; the limit effect of the sliding sleeve (1004) on the trigger head (1013-1) is released, the trigger head (1013-1) resets under the action of the trigger spring (1013-2), the spring pressing piece (1013-3) rebounds, the micro switch (1013-6) outputs an unlocking success signal, the retraction control solenoid valve (5) and the master control solenoid valve (3) are closed after a delay predetermined time, the gas cylinder (1) stops gas transmission, and the retraction of the driving deployment device is realized; in addition, the buffer oil flows from the second oil cavity (1012) to the first oil cavity (1005) through the adjustable flow hole (1008) and the oil hole at the end of the piston rod (1014) during retraction, providing oil buffer force for the retraction process.

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