CN109595208B - Gas distribution system for ensuring motion synchronism of cylinder-driven bilateral vertical hinged door and control method - Google Patents
Gas distribution system for ensuring motion synchronism of cylinder-driven bilateral vertical hinged door and control method Download PDFInfo
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- CN109595208B CN109595208B CN201811592725.9A CN201811592725A CN109595208B CN 109595208 B CN109595208 B CN 109595208B CN 201811592725 A CN201811592725 A CN 201811592725A CN 109595208 B CN109595208 B CN 109595208B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
A gas distribution system and control method used for guaranteeing the motion synchronism of a bilateral vertical hinged door driven by a cylinder, the gas distribution system controls the opening of an electric pressure reducing valve through a pressure sensor, and the consistency of gas supply pressure of the cylinder is guaranteed; the three-position five-way electromagnetic valve drives the air cylinder to finish the quick push-pull action of the door body, the door body is finally ensured to be in place through the positioning of the rubber limiting block at the top, the middle sealing signal of the three-position five-way electromagnetic valve is triggered through the magnetic ring proximity switch on the air cylinder, and a timer program for maintaining the middle sealing state is configured, the door body performs deceleration movement under the action of inertia at the moment, when the timing is finished, the distance from the door body to the rubber limiting block is the shortest, the speed is close to 0, the door body moves to the position of the corresponding rubber limiting block and keeps a compression state, the door body performs deceleration movement to the position close to the rubber limiting block, after the electromagnetic valve supplies air again, the acceleration time of the door body is shorter.
Description
Technical Field
The invention relates to a gas distribution system and a control method for ensuring the motion synchronism of a bilateral vertical hinged door, in particular to a gas distribution system and a control method for ensuring the motion synchronism of a bilateral vertical hinged door driven by a cylinder, and belongs to the technical field of gas distribution system control.
Background
In the industrial field, there are many flat-opening door mechanisms with different functions, and particularly in the fast-switching flat-opening door mechanism, the fast and smooth switching is required. For given switching time, a motor-chain transmission-direction changing pulley combined mechanism can be adopted to complete the action, and a cylinder-swing rod mechanism can also be adopted to realize the preset function. For the combined mechanism of the motor-chain transmission-direction changing pulley, the transmission chain is a flexible body of a chain (or a rope), the in-place precision cannot be well guaranteed in a given time, and the door body is driven and stopped in place by adopting a cylinder driving mode and a rubber limiting block stopping mode on more and more occasions. However, considering the difference of the air source configuration system and the difference of the on-way pressure loss, the synchronism of the bilateral vertical hinged door is generally difficult to be ensured for the air distribution system of the cylinder-driven bilateral vertical hinged door, meanwhile, the door body is stopped by striking the rubber limiting block, and finally, the door body is pressed onto the rubber limiting block through the cylinder, so that the physical noise is large in the process.
Disclosure of Invention
The technical problem solved by the invention is as follows: the air distribution system of a set of air cylinders is provided to overcome the defects of the prior art, the air inlet conditions of the air cylinders at two sides are ensured to be the same, meanwhile, the stop control method of the air cylinder driving door is improved, and the synchronism, flexibility and low-noise braking of the air cylinder driving bilateral vertical hinged door are realized.
The technical scheme of the invention is as follows: an air distribution system for ensuring the motion synchronism of a cylinder-driven double-sided vertical hinged door, comprising: the air distribution pipeline comprises an air source (1), an air distribution pipeline (2) and two sets of identical air channel control channels, wherein each set of air channel control channel correspondingly controls one of the split doors;
each set of gas circuit control channel comprises: the device comprises a one-way valve (3), a buffer tank (4), an electric reducing valve (5), a pressure sensor (6), a three-position five-way electromagnetic valve (7), a cylinder (8), an open position magnetic ring proximity switch (9), a close position magnetic ring proximity switch (10), a door body (11), an open position rubber limiting block (12), a close position rubber limiting block (13), and an extending speed regulating valve (14) and a retracting speed regulating valve (15) which are arranged on a cylinder body of the cylinder;
the gas of a gas source (1) is respectively sent to inlets of check valves (3) of two sets of identical gas path control channels through a gas distribution pipeline (2) in two ways, the gas output by the check valves (3) is sent into a buffer tank (4) to be stored in pressure and then is output to an electric pressure reducing valve (5), the electric pressure reducing valve (5) reduces the pressure of the gas output by the buffer tank (4) according to the pressure required by a cylinder (8), the reduced pressure is sent to a three-position five-way electromagnetic valve (7) through a pressure sensor (6), the expansion and contraction of a cylinder rod of the cylinder (8) can be controlled through the three-position five-way electromagnetic valve (7), and the expansion and contraction speed of the cylinder (8) is controlled through a stretching speed regulating valve (14) and a retracting speed regulating valve (15;
when a central controller command of opening or closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) or a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, meanwhile, the opening degrees of a stretching speed regulating valve (14) and a retracting speed regulating valve (15) are debugged, and the aim that the cylinder rod drives the split door to be opened or closed at the speed meeting the requirement is achieved.
When a central controller command of opening the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening of the side-by-side door driven by the cylinder rod is realized, and the steps are as follows:
when a central controller command of opening the door body is received, an external electromagnetic valve controller controls the three-position five-way electromagnetic valve (7) so as to control the retraction of a cylinder rod of the air cylinder (8), the door body (11) executes an opening command along with the retraction of the cylinder rod of the air cylinder (8), when a piston of the air cylinder (8) moves to an opening position and a magnetic ring approaches a position of the switch (9), a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state, the door body (11) continues to push the cylinder rod of the air cylinder (8) to perform deceleration retraction movement by means of inertia, after a set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, an air supply lever of the air cylinder (8) extends out, and the door body (11) moves to a rubber limiting.
When a central controller command of closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening and closing of the door is realized by the driving of the cylinder rod, and the steps are as follows:
when a central controller command of closing the door body is received, an external electromagnetic valve controller controls the three-position five-way electromagnetic valve (7), so that the extension of a cylinder rod of the air cylinder (8) is controlled; the door body (11) executes a closing command along with the extension of a cylinder rod of the cylinder (8), when a piston of the cylinder (8) moves to a position close to a magnetic ring proximity switch (10) at a closing position, a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state, the door body (11) continues to pull the cylinder rod of the cylinder (8) to do speed reduction extension movement by means of inertia, after a set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, an air supply lever of the cylinder (8) extends out, and the door body (11) moves to a rubber limiting block (13) at the closing position to keep a.
The gas pressure output by the gas source (1) is 0.8-0.85 Mpa of compressed air, and the length of the gas distribution pipeline (2) is 15-20 m.
The gas distribution pipeline (2) is a stainless steel pipe, and the length of the gas distribution pipeline (2) is matched with the gas pressure output by the gas source (1).
The outlet pressure of the electric pressure reducing valve (5) is 0.4-0.6 Mpa.
The pressure sensor (6) is used for measuring the gas pressure of the electric reducing valve (5) after pressure reduction in real time.
The three-position five-way electromagnetic valve (7) comprises an air inlet, two air outlets and two air outlets;
the air inlet of the three-position five-way electromagnetic valve (7) is connected with an air source, namely, the air after pressure reduction is measured by the pressure sensor (6); the two air outlets are connected with air inlets on two sides of the air cylinder (8); the two exhaust ports are exhausted into the atmosphere through the connected silencer, and the three-position five-way electromagnetic valve is controlled by three positions of opening, closing and middle sealing.
And the gas decompressed by the electric decompression valve (5) is sent to an air inlet of a three-position five-way electromagnetic valve (7), and the expansion and contraction of a cylinder rod of the air cylinder (8) are controlled through two air outlets of the three-position five-way electromagnetic valve (7).
The extension speed regulating valve (14) and the retraction speed regulating valve (15) which are matched with the air inlet and the air outlet of the air cylinder (8) can regulate the telescopic speed of the cylinder rod through matched air inlet pressure, and the time requirements of opening and closing different door bodies can be met.
A control method of a gas distribution system for ensuring the motion synchronism of a bilateral vertical hinged door driven by a cylinder comprises the following steps:
(1) the gas of a gas source (1) is respectively sent to inlets of one-way valves (3) of two sets of identical gas path control channels in two paths through a gas distribution pipeline (2);
(2) the gas output by the one-way valve (3) is sent into the buffer tank (4) for pressure storage and then output to the electric reducing valve (5);
(3) the electric pressure reducing valve (5) reduces the pressure of the gas output by the buffer tank (4) according to the pressure required by the air cylinder (8), and the gas is sent to the three-position five-way electromagnetic valve (7) through the pressure sensor (6) after being reduced in pressure;
(4) the expansion of a cylinder rod of the air cylinder (8) can be controlled through the three-position five-way electromagnetic valve (7);
(5) when a central controller command of opening or closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) or a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, and the motion of a cylinder rod of the air cylinder (8) is controlled by matching with middle sealing delay; the middle seal delay is that a delay delta t is added in an electromagnetic valve controller, and a middle seal signal state is maintained in the delta t time, namely, the air cylinder does not supply air or exhaust air, and the cylinder rod does deceleration motion under the inertia of the door body.
(6) The cylinder rod drives the split door to open or close, so that control is realized.
(7) The telescopic speed of the cylinder rod is matched by the extension speed regulating valve (14) and the retraction speed regulating valve (15), so that the time requirement of opening and closing the door body is met.
The middle seal delay is that a delay delta t is added in an electromagnetic valve controller, and a middle seal signal state is maintained in the delta t time, namely, an air cylinder does not supply air or exhaust air, and a cylinder rod performs deceleration motion under the inertia of a door body, and the method specifically comprises the following steps:
when the door body is closed, the port 2 'supplies air, the port 4' exhausts air, the cylinder extends out to push the door body to do closing action, when the cylinder piston triggers the closing position magnetic ring to approach the switch 10, the middle sealing signal is started, the ports 2 'and 4' are closed simultaneously, at the moment, a time delay delta t1 is added into the electromagnetic valve controller, the middle sealing signal state is maintained within delta t1 time, at the moment, the cylinder does not supply or exhaust air, the cylinder rod performs deceleration movement under the inertia of the door body, meanwhile, the cylinder piston rod cavity gas is compressed, when the door body is closest to the rubber limit block, the door body speed is close to 0, and when the door body is about to move reversely under the action of the gas pressure of the piston rod cavity, the time delay delta t1 is finished, at the same time, the port 2 'supplies air, the port 4' exhausts air, the door body continues to move towards;
when the door body is opened, the port 4 'supplies air, the port 2' exhausts air, the cylinder retracts to pull the door body to open, when the piston of the cylinder triggers the magnetic ring approach switch 9 at the opening position, the middle sealing signal is started, the ports 2 'and 4' are closed at the same time, and at the moment, the cylinder neither supplies air nor exhausts air; the time delay delta t2 is added in the electromagnetic valve controller, the middle sealing signal state is maintained within the time delta t2, the cylinder rod performs speed reduction retraction movement under the inertia of the door body, meanwhile, the gas in the piston cavity of the cylinder is compressed, when the door body is closest to the rubber limit block, the speed of the door body is close to 0, and when the door body is about to move reversely under the action of the gas pressure in the piston cavity, the time delay delta t2 is finished, meanwhile, the gas is supplied to the port 4 ', the gas is exhausted from the port 2', the door body continues to move towards the opening direction, the rubber limit block at the opening position is impacted, and the door body stops moving.
Compared with the prior art, the invention has the advantages that:
(1) the invention solves the problem that the synchronism is influenced by different air inlet pressures of the cylinders due to different on-way pressure losses of the two air supply pipelines of the cylinders by a mode of configuring the one-way valve, the air storage tank and the electric pressure reducing valve in front of the two cylinders;
(2) the invention controls the action of the door body by a three-position five-way electromagnetic valve with a middle seal and a middle seal delay method, thereby ensuring the flexible braking of the door body, reducing the braking noise of the system and preventing hard impact.
(3) The check valve (1) can prevent the gas in the buffer tank (4) from reversely supplying gas due to insufficient gas source pressure, and is used for ensuring the safe gas supply of the cylinder (8).
(4) The invention starts the middle seal delay control function by matching the cylinder with the magnetic ring proximity switch and taking the magnetic ring proximity switch signal as the middle seal opening signal, and the system can brake flexibly by reducing the speed of the door body through the compression of the gas in the cylinder.
(5) According to the invention, when the door body is closest to the rubber limiting block by debugging the delay time, the speed is close to zero, meanwhile, the middle seal is removed, the air cylinder is supplied with air in the moving direction of the door body, the door body continues to move, the door body can reach a preset position in a short distance, the door body is stopped by the rubber limiting block, the air cylinder continues supplying air at the moment, the door body is continuously compressed, and the door body is ensured to be fixed in the test process.
Drawings
FIG. 1 is a block diagram of a gas distribution system of the present invention;
FIG. 2 is a structural connection diagram of the three-position five-way solenoid valve of the present invention;
FIG. 3 is a diagram of the connection structure between the three-position five-way solenoid valve and the outside according to the present invention;
FIG. 4 is a flow chart of a control method according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention discloses a gas distribution system and a control method for ensuring the motion synchronism of a bilateral vertical hinged door driven by a cylinder. The air distribution system consists of an air source, an air distribution pipeline, a one-way valve, a buffer tank, an electric pressure reducing valve and a pressure sensor, wherein the opening degree of the electric pressure reducing valve is controlled by the pressure sensor, so that the air supply pressure of air cylinders is ensured to be consistent; the three-position five-way electromagnetic valve drives the air cylinder to finish the quick push-pull action of the door body, the door body is finally ensured to be in place with precision through the positioning of the rubber limiting block at the top, the middle sealing signal of the three-position five-way electromagnetic valve is triggered through the magnetic ring proximity switch on the air cylinder, a timer program for maintaining the middle sealing state is configured in the system, the door body performs deceleration movement under the action of inertia at the moment, when the timing is finished, the distance from the door body to the rubber limiting block is the shortest, the speed is close to 0, the three-position five-way electromagnetic valve continues to maintain the air supply state, the door body is moved to the position of the corresponding rubber limiting block and is kept in a compression state, and after the electromagnetic valve supplies air again, the acceleration time of the door body is short, the speed is.
As shown in fig. 1, the gas distribution system for ensuring the motion synchronism of the cylinder-driven bilateral vertical hinged door comprises a gas source 1, a gas distribution pipeline 2, a one-way valve 3, a buffer tank 4, an electric pressure reducing valve 5, a pressure sensor 6, a three-position five-way electromagnetic valve 7, a cylinder 8, an open position magnetic ring proximity switch 9, a closed position magnetic ring proximity switch 10, a door body 11, an open position rubber limit block 12, a closed position rubber limit block 13, a stretching speed regulating valve 14 and a retracting speed regulating valve 15, wherein the stretching speed regulating valve and the retracting speed regulating valve are arranged on a cylinder body of the cylinder. Wherein air supply 1, distribution pipeline 2, check valve 3, buffer tank 4, electronic relief pressure valve 5, sensor 6 constitute cylinder air feed line, and check valve 3 can prevent the gaseous reverse air feed that arouses because of 1 pressure of air supply in the buffer tank 4 for guarantee the safe air feed of cylinder 8, pressure sensor 6 carries out aperture control to electronic relief pressure valve 5, and the drive actuating cylinder admission pressure that is used for guaranteeing two door bodies is the same.
The check valve (1) can prevent reverse gas supply caused by insufficient gas source pressure of gas in the buffer tank (4) and ensure safe gas supply of the cylinder (8).
The stretching speed of the cylinder rod of the cylinder (8) is controlled by the opening degree of the stretching speed control valve 14 and the retracting speed control valve 15, and the movement speed of the door body is further controlled.
The invention relates to a gas distribution system and a control method for ensuring the motion synchronism of a bilateral vertical hinged door driven by a cylinder. A magnetic ring proximity switch on the air cylinder can trigger a middle sealing signal of the three-position five-way electromagnetic valve, a timer program for maintaining a middle sealing state is configured in the system, the door body performs deceleration movement under the action of inertia at the moment, when timing is finished, the distance between the door body and the rubber limiting block is the shortest, the speed is close to 0, the three-position five-way electromagnetic valve continues to maintain an air supply state, the door body moves to the position of the corresponding rubber limiting block and keeps a compression state, and after the door body decelerates to move to the position near the rubber limiting block, after the electromagnetic valve supplies air again, the acceleration time of the door body is short, the speed is slow, the door body can collide with small.
The gas supply line of the cylinder is formed by the gas source, the gas distribution pipeline, the one-way valve, the buffer tank, the electric pressure reducing valve and the sensor, the one-way valve can prevent reverse gas supply caused by insufficient pressure of the gas source in the buffer tank, the safety gas supply of the cylinder is ensured, the opening degree of the electric pressure reducing valve is controlled by the pressure sensor, the driving cylinder used for ensuring two door bodies has the same gas inlet pressure, and the synchronism control of the bilateral vertical hinged door can be effectively ensured.
After the three-position five-way electromagnetic valve triggers the middle sealing signal, a timer program for maintaining the middle sealing state is configured, so that the door body completes deceleration movement, when air is supplied again, the door body has short acceleration time and slow speed, the collision noise of the door body moving to the rubber limiting block is small, and the flexible braking of the door body is completed.
An opening position magnetic ring proximity switch (9) and a closing position magnetic ring proximity switch (10) which are matched with the air cylinder (8) are fixed in a sliding groove on the outer surface of the air cylinder through adjustable set screws, and the magnetic ring proximity switch is communicated with an air cylinder piston, can display the position of the air cylinder piston and further shows the stroke distance of the air cylinder rod. The on-position magnetic ring proximity switch (9) is positioned at the tail end of the cylinder and can represent the travel distance when the cylinder rod of the cylinder retracts, the off-position magnetic ring proximity switch (10) is positioned at the front part of the cylinder and can represent the travel distance when the cylinder rod of the cylinder extends,
as shown in fig. 2, the pressure sensor (6) is divided into a pressure sensor (6-1) corresponding to the left side door and a pressure sensor (6-2) corresponding to the right side door of the split door; the three-position five-way electromagnetic valve (7) is divided into a three-position five-way electromagnetic valve (7-1) corresponding to the left side door of the split door and a three-position five-way electromagnetic valve (7-2) corresponding to the right side door; the opening position magnetic ring proximity switch (9) is divided into an opening position magnetic ring proximity switch (9-1) corresponding to the left door and an opening position magnetic ring proximity switch (9-2) corresponding to the right door of the split door; the closing position magnetic ring proximity switch (10) is divided into a closing position magnetic ring proximity switch (10-1) corresponding to a left door and a closing position magnetic ring proximity switch (10-2) corresponding to a right door of the split doors;
the pressure sensor (6) and an external electromagnetic valve controller are connected with the PC through the control of the central controller;
the pressure sensor (6) (comprising a pressure sensor (6-1) corresponding to the left side door and a pressure sensor (6-2) corresponding to the right side door) is used for measuring the gas pressure of the electric pressure reducing valve (5) after pressure reduction in real time and sending the gas pressure to a port 1' of the three-position five-way electromagnetic valve (7); the PC sends an instruction to the central controller; the electromagnetic valve controller is controlled by the central controller, outputs control signals to the three-position five-way electromagnetic valve (7), the opening position magnetic ring proximity switch (9) and the closing position magnetic ring proximity switch (10), and controls the three-position five-way electromagnetic valve (7).
When a central controller command of opening the door body is received, the electromagnetic valve controller controls a three-position five-way electromagnetic valve 7 (comprising a three-position five-way electromagnetic valve (7-1) corresponding to a left door and a three-position five-way electromagnetic valve (7-2) corresponding to a right door), the port 4 'supplies air, the port 2' exhausts air, the door body executes an opening command along with retraction of a cylinder rod of the air cylinder 8, when a piston of the air cylinder 8 moves to a magnetic ring proximity switch 9 (comprising an opening position magnetic ring proximity switch (9-1) corresponding to the left door and an opening position magnetic ring proximity switch (9-2) corresponding to the right door), a middle sealing signal is triggered, meanwhile, the time delay time delta t2 of a middle sealing state is kept for starting timing, at the moment, the door body 11 continuously pushes the cylinder rod of the air cylinder 8 to perform deceleration retraction movement by means of inertia, and when the time delta t2 is reached, the middle, the port 4 'supplies air, the port 2' exhausts air, and the door body 11 moves to the rubber limiting block 12 at the opening position to keep a compression state.
When a central controller command of closing the door body is received, the electromagnetic valve controller controls the three-position five-way electromagnetic valve 7-1, the port 2 'supplies air, the port 4' exhausts air, the door body executes a closing command along with the extension of a cylinder rod of the air cylinder 8, when a piston of the air cylinder 8 moves to a position of a magnetic ring proximity switch 10 (comprising a closing position magnetic ring proximity switch (10-1) corresponding to a left side door and a closing position magnetic ring proximity switch (10-2) corresponding to a right side door), a middle sealing signal is triggered, meanwhile, the time delay time delta t1 of a middle sealing state is kept for starting timing, at the moment, the door body 11 continues to pull the cylinder rod of the air cylinder 8 to perform deceleration extension movement by means of inertia, after the time delta t1 is reached, the middle sealing state of the three-position five-way electromagnetic valve 7 is released, the port 2 'supplies air, the port 4' exhausts, the compressed state is maintained.
The rubber limit blocks (12) and (13) are positioned on the fixed frame arranged outside and used for mechanically limiting the opening and closing positions of the door body.
The air source inflates the two buffer tanks through the air distribution pipeline and is used for driving the air cylinder, the three-position five-way electromagnetic valve is used for pushing and pulling the door body, and the door body is finally positioned through the rubber limiting block at the top to ensure the in-place precision. A check valve is arranged in front of a buffer tank in the gas distribution system, an electric pressure reducing valve is arranged at the rear end of the buffer tank, and the opening degree of the electric pressure reducing valve is controlled through a pressure sensor on a pipeline at the rear end of the electric pressure reducing valve to ensure that the air inlet pressures of the two cylinders are the same.
As shown in fig. 3, the expansion and contraction control of the cylinder operates the three-position five-way solenoid valve through an externally arranged solenoid valve controller, a valve body port 1 ' corresponds to an air source interface, ports 2 ' and 4 ' correspond to air inlets on two sides of the cylinder, and ports 3 ' and 5 ' are exhaust ports corresponding to the valve body and are exhausted into the atmosphere through being connected with a silencer. According to the invention, when the port 4 supplies air, the air cylinder retracts, when the port 2 ' supplies air, the air cylinder extends, when the ports 2 ' and 4 ' are closed simultaneously, the valve position is in a middle sealing position, and a middle sealing signal is triggered by a magnetic ring approach switch signal configured on a sliding groove outside the cylinder barrel of the air cylinder. When the door body is closed, the port 2 'supplies air, the port 4' exhausts air, the cylinder stretches out to push the door body to do closing action, when the piston of the cylinder triggers the closing position magnetic ring approach switch 10, the middle sealing signal is started, the ports 2 'and 4' are closed at the same time, and at the moment, the cylinder neither supplies air nor exhausts air; adding a delay delta t1 into an electromagnetic valve controller, maintaining a middle sealing signal state within delta t1, enabling a cylinder rod to do deceleration extension movement under the inertia of a door body, simultaneously compressing air in a piston rod cavity of the cylinder, enabling the speed of the door body to be close to 0 when the door body is closest to a rubber limiting block, finishing the delay delta t1 when the door body is about to move in the reverse direction under the action of the air pressure in the piston rod cavity, simultaneously supplying air to a port 2 ', exhausting air from the port 4', enabling the door body to continue to move in the closing direction, impacting the rubber limiting block at the closing position, and stopping the movement of the door body;
when the door body is opened, the port 4 'supplies air, the port 2' exhausts air, the cylinder retracts to pull the door body to open, when the piston of the cylinder triggers the magnetic ring approach switch 9 at the opening position, the middle sealing signal is started, the ports 2 'and 4' are closed at the same time, and at the moment, the cylinder neither supplies air nor exhausts air; the time delay delta t2 is added in the electromagnetic valve controller, the middle sealing signal state is maintained within the time delta t2, the cylinder rod performs speed reduction retraction movement under the inertia of the door body, meanwhile, the gas in the piston cavity of the cylinder is compressed, when the door body is closest to the rubber limit block, the speed of the door body is close to 0, and when the door body is about to move reversely under the action of the gas pressure in the piston cavity, the time delay delta t2 is finished, meanwhile, the gas is supplied to the port 4 ', the gas is exhausted from the port 2', the door body continues to move towards the opening direction, the rubber limit block at the opening position is impacted, and the door body stops moving. For a fast moving door body, under the given same air supply condition, the output force of the air cylinder is constant, so that different delay time and different opening degrees of the speed regulating valve are given according to the resistance difference of the door body during manufacturing and installation, and the positions of the magnetic ring proximity switches are preset on the corresponding driving air cylinders, so as to ensure the synchronism and flexible braking within the specified time.
In the debugging process, the speed regulating valves (14) and (15) on the cylinder body of the air cylinder are debugged, so that the door body moves at a given speed. The opening numerical value of the speed regulating valve, the back pressure of the electric pressure reducing valve, the position of a magnetic ring on a chute outside the cylinder body close to a switch and the middle seal delay time delta t are matched together to meet the requirements of the movement of the door body within the specified time and the flexible braking effect.
The movement distance of the door body is preferably 1250mm, the opening and closing actions are required to be completed within 6 seconds, and the synchronism and flexible braking of the door body are ensured.
The preferred steps of the debugging process are as follows:
1) the pressure of an air source is 0.8MPa, the volume of the buffer tank is 24L, and the pressure after the electric pressure reducing valve is 0.4 MPa;
2) the opening degree of the speed regulating valve is debugged according to the given requirement of the movement time of the door body, and the subsequent fine adjustment can be carried out in a small range;
3) preliminarily setting the position of the magnetic ring close to the switch, observing the distance between the door body and the rubber limit block under the middle seal delay control by setting different delay time, enabling the distance to be minimum under the parameter matching, and finely adjusting the position of the magnetic ring limit switch;
the time for opening/closing the door body after field debugging is 5.7 seconds, and the rest parameters are as follows, wherein the position of the magnetic ring close to the switch is a reference position, and the magnetic ring is measured from the front end part and the rear end part of the cylinder body outside the cylinder to one end of the magnetic ring close to the switch in actual debugging; the number of turns of the speed regulating valve is clockwise adjusted when the opening of the speed regulating valve is zero.
The difference of the data mainly comes from the difference of system resistance when the door body is installed and manufactured, and the rigidity of the external frame deforms under the action of the weight of the door body and equipment, so that the guide rail on the external fixed frame has local deformation, and the parameters of the same door are different when the same door is opened and closed.
The method is adopted for debugging, 1250mm door body movement can be completed within 6 seconds, the in-place precision of the door body can be ensured by continuous pressing of the rubber limiting block and the air cylinder, the synchronism and the flexible control of the two door bodies are completed by a multi-strategy matching control method of giving different magnetic ring proximity switch positions, different opening degrees of the speed regulating valve and different middle seal delay time, and the stability of air used by the air cylinder is ensured by a method of configuring the buffer tank.
As shown in fig. 4, the control method of the air distribution system for ensuring the motion synchronism of the cylinder-driven double-side vertical hinged door of the present invention is characterized by comprising the following steps:
(1) the gas of a gas source (1) is respectively sent to inlets of one-way valves (3) of two sets of identical gas path control channels in two paths through a gas distribution pipeline (2);
(2) the gas output by the one-way valve (3) is sent into the buffer tank (4) for pressure storage and then output to the electric reducing valve (5);
(3) the electric pressure reducing valve (5) reduces the pressure of the gas output by the buffer tank (4) according to the pressure required by the air cylinder (8), and the gas is sent to the three-position five-way electromagnetic valve (7) through the pressure sensor (6) after being reduced in pressure;
(4) the expansion of a cylinder rod of the air cylinder (8) can be controlled through the three-position five-way electromagnetic valve (7);
(5) when a central controller command of opening or closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) or a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move;
(6) the cylinder rod drives the split door to open or close, so that control is realized.
The specific preferred implementation manner of the steps (5) and (6) is as follows:
when a central controller command of opening the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and a closed position magnetic ring proximity switch (9) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening of the side-by-side door driven by the cylinder rod is realized, and the steps are as follows:
(5.1) when receiving a central controller command of opening the door body, an external electromagnetic valve controller controls a three-position five-way electromagnetic valve (7) so as to control the retraction of a cylinder rod of an air cylinder (8),
(5.2) the door body (11) executes an opening command along with the retraction of a cylinder rod of the cylinder (8), when a piston of the cylinder (8) moves to a position where a closed position magnetic ring approaches a switch (9), a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state,
(5.3) the door body (11) continues to push the cylinder rod of the air cylinder (8) to do deceleration retraction movement by means of inertia, when the set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, an air supply lever of the air cylinder (8) extends out, and the door body (11) moves to a rubber limiting block (12) at the opening position to keep the pressing state.
When a central controller command of closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening and closing of the door is realized by the driving of the cylinder rod, and the steps are as follows:
(5.1) when a central controller command of closing the door body is received, an external electromagnetic valve controller controls a three-position five-way electromagnetic valve (7) so as to control the extension of a cylinder rod of an air cylinder (8);
(5.2) the door body (11) executes a closing command along with the extension of a cylinder rod of the cylinder (8), when a piston of the cylinder (8) moves to a position where a closing position magnetic ring approaches a switch (10), a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state,
(5.3) the door body (11) continues to pull the cylinder rod of the air cylinder (8) to do deceleration extension movement by means of inertia, when the set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, the air supply lever of the air cylinder (8) extends out, and the door body (11) moves to a rubber limiting block (13) at the closing position to keep the pressing state.
The invention solves the problem that the synchronism is influenced by different air inlet pressures of the cylinders due to different on-way pressure losses of the two air supply pipelines of the cylinders by a mode of configuring the one-way valve, the air storage tank and the electric pressure reducing valve in front of the two cylinders; the three-position five-way electromagnetic valve with the middle seal is provided, and the middle seal delay method is configured to control the action of the door body, so that the flexible braking of the door body can be ensured, the braking noise of the system is reduced, and the hard impact is prevented.
The check valve (1) can prevent gas in the buffer tank (4) from reversely supplying gas due to insufficient gas source pressure, is used for ensuring the safe gas supply of the cylinder (8), and can start the middle seal delay control function by matching the cylinder with a magnetic ring proximity switch and taking a magnetic ring proximity switch signal as a middle seal opening signal, and can flexibly brake a system by compressing the gas in the cylinder to decelerate a door body.
According to the invention, when the door body is closest to the rubber limiting block by debugging the delay time, the speed is close to zero, meanwhile, the middle seal is removed, the air cylinder is supplied with air in the moving direction of the door body, the door body continues to move, the door body can reach a preset position in a short distance, the door body is stopped by the rubber limiting block, the air cylinder continues supplying air at the moment, the door body is continuously compressed, and the door body is ensured to be fixed in the test process.
Claims (8)
1. A gas distribution system for guaranteeing motion synchronism of a cylinder-driven bilateral vertical hinged door is characterized by comprising: the air distribution pipeline comprises an air source (1), an air distribution pipeline (2) and two sets of identical air channel control channels, wherein each set of air channel control channel correspondingly controls one of the split doors;
each set of gas circuit control channel comprises: the device comprises a one-way valve (3), a buffer tank (4), an electric reducing valve (5), a pressure sensor (6), a three-position five-way electromagnetic valve (7), a cylinder (8), an open position magnetic ring proximity switch (9), a close position magnetic ring proximity switch (10), a door body (11), an open position rubber limiting block (12), a close position rubber limiting block (13), and an extending speed regulating valve (14) and a retracting speed regulating valve (15) which are arranged on a cylinder body of the cylinder;
the gas of a gas source (1) is respectively sent to inlets of check valves (3) of two sets of identical gas path control channels through a gas distribution pipeline (2) in two ways, the gas output by the check valves (3) is sent into a buffer tank (4) to be stored in pressure and then is output to an electric pressure reducing valve (5), the electric pressure reducing valve (5) reduces the pressure of the gas output by the buffer tank (4) according to the pressure required by a cylinder (8), the reduced pressure is sent to a three-position five-way electromagnetic valve (7) through a pressure sensor (6), the expansion and contraction of a cylinder rod of the cylinder (8) can be controlled through the three-position five-way electromagnetic valve (7), and the expansion and contraction speed of the cylinder (8) is controlled through a stretching speed regulating valve (14) and a retracting speed regulating valve (15;
when a central controller command of opening or closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) or a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, meanwhile, the opening degrees of a stretching speed regulating valve (14) and a retracting speed regulating valve (15) are debugged, and the aim that the cylinder rod drives the split door to be opened or closed at the speed meeting the requirement is achieved;
when a central controller command of closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening and closing of the door is realized by the driving of the cylinder rod, and the steps are as follows:
when a central controller command of closing the door body is received, an external electromagnetic valve controller controls the three-position five-way electromagnetic valve (7), so that the extension of a cylinder rod of the air cylinder (8) is controlled; the door body (11) executes a closing command along with the extension of a cylinder rod of the air cylinder (8), when a piston of the air cylinder (8) moves to a position close to a closing position magnetic ring proximity switch (10), a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state, the door body (11) continues to pull the cylinder rod of the air cylinder (8) to do deceleration extension movement by means of inertia, after a set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, the cylinder rod of the air cylinder (8) extends, and the door body (11) moves to a rubber limiting block (13) at the closing position to keep a compression state;
the pressure sensor (6) is used for measuring the gas pressure of the electric reducing valve (5) after pressure reduction in real time;
the gas distribution pipeline (2) is a stainless steel pipe, and the length of the gas distribution pipeline (2) is matched with the gas pressure output by the gas source (1).
2. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: when a central controller command of opening the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, so that the cylinder rod of the air cylinder (8) is controlled to move, the opening of the side-by-side door driven by the cylinder rod is realized, and the steps are as follows:
when a central controller command of opening the door body is received, an external electromagnetic valve controller controls the three-position five-way electromagnetic valve (7) so as to control the retraction of a cylinder rod of the air cylinder (8), the door body (11) executes an opening command along with the retraction of the cylinder rod of the air cylinder (8), when a piston of the air cylinder (8) moves to an opening position and a magnetic ring approaches a position of the switch (9), a middle sealing signal is triggered to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state, the door body (11) continues to push the cylinder rod of the air cylinder (8) to perform deceleration retraction movement by means of inertia, after a set time is reached, the middle sealing state of the three-position five-way electromagnetic valve (7) is released, the cylinder rod of the air cylinder (8) retracts, and the door body (11) moves to a rubber limiting block (.
3. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: the gas pressure output by the gas source (1) is 0.8-0.85 Mpa of compressed air, and the length of the gas distribution pipeline (2) is 15-20 m.
4. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: the outlet pressure of the electric pressure reducing valve (5) is 0.4-0.6 Mpa.
5. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: the three-position five-way electromagnetic valve (7) comprises an air inlet, two air outlets and two air outlets;
the air inlet of the three-position five-way electromagnetic valve (7) is connected with an air source, namely, the air after pressure reduction is measured by the pressure sensor (6); the two air outlets are connected with air inlets on two sides of the air cylinder (8); the two exhaust ports are exhausted into the atmosphere through the connected silencer, and the three-position five-way electromagnetic valve is controlled by three positions of opening, closing and middle sealing.
6. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: and the gas decompressed by the electric decompression valve (5) is sent to an air inlet of a three-position five-way electromagnetic valve (7), and the expansion and contraction of a cylinder rod of the air cylinder (8) are controlled through two air outlets of the three-position five-way electromagnetic valve (7).
7. The air distribution system for ensuring the motion synchronism of the double-side vertical hinged door driven by the air cylinder as claimed in claim 1, wherein: the extension speed regulating valve (14) and the retraction speed regulating valve (15) which are matched with the air inlet and the air outlet of the air cylinder (8) can regulate the telescopic speed of the cylinder rod through matched air inlet pressure, and the time requirements of opening and closing different door bodies can be met.
8. A control method of a gas distribution system for ensuring the motion synchronism of a bilateral vertical hinged door driven by a cylinder is characterized by comprising the following steps:
(1) the gas of a gas source (1) is respectively sent to inlets of one-way valves (3) of two sets of identical gas path control channels in two paths through a gas distribution pipeline (2);
(2) the gas output by the one-way valve (3) is sent into the buffer tank (4) for pressure storage and then output to the electric reducing valve (5);
(3) the electric pressure reducing valve (5) reduces the pressure of the gas output by the buffer tank (4) according to the pressure required by the air cylinder (8), and the gas is sent to the three-position five-way electromagnetic valve (7) through the pressure sensor (6) after being reduced in pressure;
(4) the expansion of a cylinder rod of the air cylinder (8) can be controlled through the three-position five-way electromagnetic valve (7);
(5) when a central controller command of opening or closing the door body is received, the three-position five-way electromagnetic valve (7) is controlled through an external electromagnetic valve controller and an opening position magnetic ring proximity switch (9) or a closing position magnetic ring proximity switch (10) which is arranged on the air cylinder (8) and used for triggering a middle sealing signal, and the motion of a cylinder rod of the air cylinder (8) is controlled by matching with middle sealing delay; the middle seal delay means: triggering a middle sealing signal to control the three-position five-way electromagnetic valve (7) to be in a middle sealing state, and releasing the middle sealing state of the three-position five-way electromagnetic valve (7) after the set time is reached;
(6) the cylinder rod drives the split door to open or close, so that control is realized;
(7) the telescopic speed of the cylinder rod is matched by the extension speed regulating valve (14) and the retraction speed regulating valve (15), so that the time requirement of opening and closing the door body is met.
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| CN114962361A (en) * | 2022-04-11 | 2022-08-30 | 中国第一汽车股份有限公司 | Synchronous following control system and method for special press-fit equipment driven by air cylinder and servo motor |
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