CN106152981B - Shutter mechanism device for coating thickness gauge - Google Patents
Shutter mechanism device for coating thickness gauge Download PDFInfo
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- CN106152981B CN106152981B CN201510146602.2A CN201510146602A CN106152981B CN 106152981 B CN106152981 B CN 106152981B CN 201510146602 A CN201510146602 A CN 201510146602A CN 106152981 B CN106152981 B CN 106152981B
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Abstract
The invention relates to a shutter mechanism of an X-ray source, in particular to an X-ray source shutter mechanism device for a coating thickness gauge. The utility model provides a shutter mechanism device for cladding material calibrator, including motor drive module, motor (8), shutter plate (3), rotor arm (4), fulcrum screw (2), position sensor (5), the shutter plate is the curved bar board, ray emission window (1) is hugged closely to shutter plate front portion, the anterior fulcrum screw of installing in the shutter plate, fulcrum screw fixed mounting is on frame (9), rotor arm one end is connected at shutter plate rear portion, the motor shaft is connected to the rotor arm other end, position sensor is equipped with respectively in the rotor arm both sides, the rotor arm is just reversing to be moved the shutter plate and is just reversing the rotation along the fulcrum screw, make the shutter plate open and close ray emission window, rotor arm just reversing extreme position is by position sensor perception. Electromagnets (6) are respectively arranged at the positive and negative rotation limit positions of the rear part of the shutter plate; the long groove at the back part of the shutter plate is sleeved on the rotating arm pin shaft (7).
Description
Technical Field
The invention relates to a shutter mechanism of an X-ray source, in particular to an X-ray source shutter mechanism device for a coating thickness gauge.
Background
The thickness control of the zinc layer of the galvanized sheet is an important part of the product quality, so the stability of the coating thickness gauge is important. In the using process of the coating thickness gauge, equipment is stopped in a large proportion due to the failure of a shutter driving mechanism of an X-ray tube. From the analysis of fault results, the damage of the shutter driving motor is mainly caused, the average service life of the motor is caused to be 1 year, the normal use of the equipment is seriously influenced, and a large amount of investment of equipment maintenance cost is also caused.
A coating thickness gauge X-ray source shutter mechanism mainly adopts a rotary shutter, when the shutter is opened, a connecting rod is driven by a motor, a shutter baffle covered on a ray source window is driven by the connecting rod, the ray window is opened, a spring on the driving connecting rod is also stretched, and at the moment, the motor is always in an electrified state. When the shutter is closed, the motor is powered off, and the pulling force of the spring drives the shutter mechanism to close the ray source window. The shutter with the structure has the defects that the driving motor is always in the power-on state, the motor load is increased by the reverse acting force, and the shutter is in the high-load state for a long time, so that the service life of the motor is seriously influenced.
Disclosure of Invention
The invention aims to provide a shutter mechanism device for a coating thickness gauge, which can enable a motor not to be acted by reaction force after a shutter is opened, reduce the load of the motor and prolong the service life of the motor.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a shutter mechanism device for a coating thickness gauge comprises a motor driving module, a motor, a shutter plate and a rotating arm, wherein the shutter plate is positioned above a ray emission window, the motor driving module controls the motor to rotate, and a motor shaft drives the rotating arm; the shutter mechanism device further comprises a fulcrum screw and a position sensor, the shutter plate is a curved bar plate, the front portion of the shutter plate is tightly attached to the ray emission window, the fulcrum screw is mounted at the middle front portion of the shutter plate and fixedly mounted on the frame, the rear portion of the shutter plate is connected with one end of a rotating arm, the other end of the rotating arm is connected with a motor shaft, the position sensor is mounted on each of two sides of the rotating arm, the rotating arm rotates forwards and backwards to drive the shutter plate to rotate forwards and backwards along the fulcrum screw, the ray emission window is opened and closed by the shutter plate, and the forward and reverse rotation limit positions of the rotating arm.
And electromagnets are respectively arranged at the forward and reverse rotation limit positions of the rear part of the shutter plate and controlled by the motor driving module.
The rear part of the shutter plate is provided with a long groove, the end part of the rotating arm is provided with a pin shaft, and the long groove of the shutter plate is sleeved on the pin shaft of the rotating arm.
The motor drive module control circuit includes: a first relay K1, a second relay K2, a third relay K3, a fourth relay K4; two ends of the first relay K1 are connected with an output signal of a Programmable Logic Controller (PLC), two ends of the first relay K1 are connected with a diode C1 in parallel, and the first relay K1 comprises four auxiliary contacts;
the positive end of the direct-current power supply is connected with a first relay K1, a first auxiliary contact 11, a shutter closing state indicator light L2, a shutter opening state indicator light L1, a second contact of a shutter closing limit sensor G2, a second contact of a shutter opening limit sensor G1 and one end of a third relay K3 in parallel; the negative end of the direct current power supply is connected with a third contact of a shutter closing limit sensor G2, a third contact of a shutter opening limit sensor, a second auxiliary contact 21 of a second relay K2 and one end of a second electromagnet YA2 in parallel;
the first relay K1 is connected with the corresponding ends 12 and 14 of a first auxiliary contact 11, the first relay K1 is normally closed with the corresponding end 12, the other end of the corresponding end 12 of the first auxiliary contact is connected with a series resistor R1 and then connected with a second auxiliary contact 21 of a third relay K3, and the other end of the corresponding end 14 of the first auxiliary contact 11 of the first relay K1 is connected with a series resistor R2 and then connected with the first auxiliary contact 11 of the third relay K3; the second auxiliary contact 21 of the first relay K1 is connected with the negative end of the direct current power supply, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the first relay K1, the second auxiliary contact 21 of the first relay K1 is normally closed with the corresponding end 22, the other end of the corresponding end 22 of the second auxiliary contact is connected with the first auxiliary contact 11 of the third relay K3 after being connected with a series resistor R3, and the other end of the corresponding end 24 of the second auxiliary contact 21 of the first relay K1 is connected with the second auxiliary contact 21 of the third relay K3 after being connected with a series resistor R4;
the third relay K3 is provided with ends 12 and 14 corresponding to the first auxiliary contact 11, the third relay K3 is provided with the first auxiliary contact 11 which is normally closed with the corresponding end 12, the other end of the corresponding end 12 of the first auxiliary contact is connected with the positive pole of the shutter motor M, and the other end of the corresponding end 14 of the first auxiliary contact 11 of the third relay K3 is disconnected; the third relay K3 corresponds to the ends 22 and 24 of the second auxiliary contact 21, the third relay K3 closes the second auxiliary contact 21 with the corresponding end 22 normally, the other end of the corresponding end 22 of the second auxiliary contact is connected with the negative electrode of the shutter motor M, and the other end of the corresponding end 24 of the second auxiliary contact 21 of the third relay K3 is disconnected; two ends of the shutter motor M are connected with a capacitor C1 and a positive-negative diode D2 in parallel;
the other end of the shutter off state indicator light L2 is connected with a second auxiliary contact 21 of the fourth relay K4, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the fourth relay K4, the second auxiliary contact 21 of the fourth relay K4 is normally closed with the corresponding end 22, the other end of the corresponding end 22 of the second auxiliary contact is disconnected, and the other end of the corresponding end 24 of the second auxiliary contact 22 of the fourth relay K4 is connected with the negative end of the direct-current power supply;
the other end of the shutter open state indicator light L1 is connected with the other end of the corresponding end 14 of the first auxiliary contact 11 of the second relay K2, the corresponding ends 12 and 14 of the first auxiliary contact 11 of the second relay K2, the first auxiliary contact 11 of the second relay K2 is normally closed with the corresponding end 12 thereof, the other end of the corresponding end 12 of the first auxiliary contact is disconnected, and the first auxiliary contact 11 of the second relay K1 is connected with the negative end of the direct-current power supply;
one end of a fourth relay K4 is connected with the negative end of a direct-current power supply, and the other end of the fourth relay K4 is connected with a first contact of a shutter-off limit sensor G2; one end of a second relay K2 is connected with the negative end of a direct-current power supply, and the other end of the second relay K2 is connected with a first contact of a shutter opening limit sensor G1;
the other end of the third relay K3 is connected in parallel with a third auxiliary contact 31 of the first relay K1 and a first auxiliary contact 11 of the fourth relay K4, the corresponding ends 32 and 34 of the third auxiliary contact 31 of the first relay K1 are normally closed with the corresponding end 32 of the first relay K1, the other end of the corresponding end 32 of the third auxiliary contact is opened, the other end of the corresponding end 34 of the third auxiliary contact 31 of the first relay K1 is connected with a first electromagnet YA1, the other end of the first electromagnet YA1 is connected with the corresponding end 24 of a second auxiliary contact 21 of the second relay K2, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the second relay K2, the second auxiliary contact 21 of the second relay K2 is normally closed with the corresponding end 22, and the other end of the corresponding end 22 of the second auxiliary contact is opened;
the corresponding ends 12 and 14 of the first auxiliary contact 11 of the fourth relay K4 are connected with the corresponding end 12 of the fourth relay K4 in a normally closed mode, the other end of the corresponding end 12 of the first auxiliary contact is disconnected, the other end of the corresponding end 14 of the first auxiliary contact 11 of the fourth relay K4 is connected with the fourth auxiliary contact 41 of the first relay K1, the corresponding ends 42 and 44 of the fourth auxiliary contact 41 of the first relay K1 are connected with the corresponding end 42 of the fourth auxiliary contact 41 of the first relay K1 in a normally closed mode, the other end of the corresponding end 42 of the fourth auxiliary contact is connected with the second electromagnet YA2, the other end of the second electromagnet YA2 is connected with a negative pole of a direct-current power supply, and the other end of the corresponding end 44 of the fourth auxiliary contact 41 of the first relay K1 is.
Compared with the prior art, the invention has the beneficial effects that:
1. the shutter mechanism device of the invention is used as a special device for an X-ray shutter mechanism, and can improve the detection precision of detection equipment and prolong the service life of components.
2. The invention can effectively prevent the motor from being influenced by reverse acting force after the shutter is opened by changing the opening and closing mode of the shutter, and reduce the load, thereby prolonging the service life of the motor.
3. The shutter mechanism device can be automatically closed after the X-ray source is electrified again after being powered off.
The shutter mechanism device has the advantages of relatively simple structure, safety, practicability, stable state and long service life.
Drawings
FIG. 1 is a schematic view of a shutter mechanism device for a coating thickness gauge according to the present invention;
FIG. 2 is a schematic top view of a shutter mechanism assembly according to the present invention;
FIG. 3 is a partial schematic view of a shutter mechanism;
FIG. 4 is an electrical control diagram of the shutter mechanism device of the present invention.
In the figure: the device comprises a ray emission window 1, a fulcrum screw 2, a shutter plate 3, a rotating arm 4, a position sensor 5, an electromagnet 6, a pin shaft 7, a motor 8 and a frame 9.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, 2 and 3, the shutter mechanism device for the coating thickness gauge comprises a motor driving module, a motor 8, a shutter plate 3, a rotating arm 4, a fulcrum screw 2, a position sensor 5 and an electromagnet 6.
The shutter plate 3 is located above the ray emission window 1, the shutter plate 3 is a curved bar plate, the front portion of the shutter plate 3 is tightly attached to the ray emission window 1, a fulcrum screw 2 is installed at the front portion of the shutter plate 3, the fulcrum screw 2 is fixedly installed on a frame 9, the rear portion of the shutter plate 3 is connected with one end of a rotating arm 4, the other end of the rotating arm 4 is connected with a motor 8 shaft, a motor driving module controls the motor 8 to rotate, and a motor shaft drives the rotating arm 4 to rotate. The rear part of the shutter plate 3 is provided with an elongated slot, the end part of the rotating arm 4 is provided with a pin shaft 7, and the elongated slot of the shutter plate 3 is sleeved on the pin shaft 7 of the rotating arm 4, so that the connection between the rear part of the shutter plate 3 and the rotating arm 4 is realized.
And position sensors 5 are respectively arranged on two sides of the rotating arm 4, the rotating arm 4 rotates forwards and backwards to drive the shutter plate 3 to rotate forwards and backwards along the fulcrum screw 2, so that the shutter plate 3 opens and closes the ray emission window 1, and the forward and reverse rotation limit positions of the rotating arm 4 are sensed by the position sensors 5.
And electromagnets 6 are respectively arranged at the forward and reverse rotation limit positions of the rear part of the shutter plate 3, and the electromagnets 6 are controlled by a motor driving module.
The shutter mechanism device of the present invention is electrically controlled by a motor driving module control circuit, see fig. 4.
The motor drive module control circuit includes: a first relay K1, a second relay K2, a third relay K3, a fourth relay K4; further comprising: a shutter motor M, i.e., the aforementioned motor 8; a shutter opening limit sensor G1, a shutter closing limit sensor G2, i.e., the aforementioned position sensor 5; the first electromagnet YA1 and the second electromagnet YA2 are the electromagnets 6.
Two ends of the first relay K1 are connected with an output signal of a Programmable Logic Controller (PLC), two ends of the first relay K1 are connected with a diode C1 in parallel, and the first relay K1 comprises four auxiliary contacts;
the direct current power supply is 24V direct current, the positive end of the direct current power supply is +24V, and the negative end of the direct current power supply is 0V. The positive end of the direct current power supply is connected with a first relay K1 first auxiliary contact 11, a shutter closing state indicator lamp L2, a shutter opening state indicator lamp L1, a second contact of a shutter closing limit sensor G2, a second contact of a shutter opening limit sensor G1 and one end of a third relay K3 in parallel. The negative end of the direct current power supply is connected with the third contact of a shutter closing limit sensor G2, the third contact of a shutter opening limit sensor G1, the second auxiliary contact 21 of a second relay K2 and one end of a second electromagnet YA2 in parallel.
The first relay K1 is connected with the corresponding ends 12 and 14 of a first auxiliary contact 11, the first relay K1 is normally closed with the corresponding end 12, the other end of the corresponding end 12 of the first auxiliary contact is connected with a series resistor R1 and then connected with a second auxiliary contact 21 of a third relay K3, and the other end of the corresponding end 14 of the first auxiliary contact 11 of the first relay K1 is connected with a series resistor R2 and then connected with the first auxiliary contact 11 of the third relay K3; the second auxiliary contact 21 of the first relay K1 is connected with the negative end of the direct current power supply, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the first relay K1 are normally closed, the second auxiliary contact 21 of the first relay K1 is normally closed with the corresponding end 22, the other end of the corresponding end 22 of the second auxiliary contact is connected with the first auxiliary contact 11 of the third relay K3 after being connected with a series resistor R3, and the other end of the corresponding end 24 of the second auxiliary contact 21 of the first relay K1 is connected with the second auxiliary contact 21 of the third relay K3 after being connected with a series resistor R4.
The third relay K3 is provided with ends 12 and 14 corresponding to the first auxiliary contact 11, the third relay K3 is provided with the first auxiliary contact 11 which is normally closed with the corresponding end 12, the other end of the corresponding end 12 of the first auxiliary contact is connected with the positive pole of the shutter motor M, and the other end of the corresponding end 14 of the first auxiliary contact 11 of the third relay K3 is disconnected; the third relay K3 corresponds to the ends 22 and 24 of the second auxiliary contact 21, the third relay K3 closes the second auxiliary contact 21 with the corresponding end 22 normally, the other end of the corresponding end 22 of the second auxiliary contact is connected with the negative electrode of the shutter motor M, and the other end of the corresponding end 24 of the second auxiliary contact 21 of the third relay K3 is disconnected; and the two ends of the shutter motor M are connected with a capacitor C1 and a positive-negative diode D2 in parallel.
The other end of the shutter off state indicator light L2 is connected with the second auxiliary contact 21 of the fourth relay K4, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the fourth relay K4, the second auxiliary contact 21 of the fourth relay K4 is normally closed with the corresponding end 22, the other end of the corresponding end 22 of the second auxiliary contact is disconnected, and the other end of the corresponding end 24 of the second auxiliary contact 22 of the fourth relay K4 is connected with the negative end of the direct current power supply.
The other end of the shutter open state indicator light L1 is connected with the other end of the corresponding end 14 of the first auxiliary contact 11 of the second relay K2, the corresponding ends 12 and 14 of the first auxiliary contact 11 of the second relay K2, the first auxiliary contact 11 of the second relay K2 is normally closed with the corresponding end 12 thereof, the other end of the corresponding end 12 of the first auxiliary contact is disconnected, and the first auxiliary contact 11 of the second relay K1 is connected with the negative end of the direct-current power supply.
One end of the fourth relay K4 is connected with the negative end of the direct current power supply, and the other end of the fourth relay K4 is connected with the first contact of the shutter-off limit sensor G2.
One end of the second relay K2 is connected with the negative end of the direct current power supply, and the other end of the second relay K2 is connected with the first contact of the shutter opening limit sensor G1.
The other end of the third relay K3 is connected in parallel with the third auxiliary contact 31 of the first relay K1 and the first auxiliary contact 11 of the fourth relay K4, the corresponding ends 32 and 34 of the third auxiliary contact 31 of the first relay K1, the third auxiliary contact 31 of the first relay K1 and the corresponding end 32 thereof are normally closed, the other end of the corresponding end 32 of the third auxiliary contact is opened, the other end of the corresponding end 34 of the third auxiliary contact 31 of the first relay K1 is connected with the first electromagnet YA1, the other end of the first electromagnet YA1 is connected with the corresponding end 24 of the second auxiliary contact 21 of the second relay K2, the corresponding ends 22 and 24 of the second auxiliary contact 21 of the second relay K2, the second auxiliary contact 21 of the second relay K2 and the corresponding end 22 thereof are normally closed, and the other end of the corresponding end 22 of the second auxiliary contact.
The corresponding ends 12 and 14 of the first auxiliary contact 11 of the fourth relay K4 are connected with the corresponding end 12 of the fourth relay K4 in a normally closed mode, the other end of the corresponding end 12 of the first auxiliary contact is disconnected, the other end of the corresponding end 14 of the first auxiliary contact 11 of the fourth relay K4 is connected with the fourth auxiliary contact 41 of the first relay K1, the corresponding ends 42 and 44 of the fourth auxiliary contact 41 of the first relay K1 are connected with the corresponding end 42 of the fourth auxiliary contact 41 of the first relay K1 in a normally closed mode, the other end of the corresponding end 42 of the fourth auxiliary contact is connected with the second electromagnet YA2, the other end of the second electromagnet YA2 is connected with a negative pole of a direct-current power supply, and the other end of the corresponding end 44 of the fourth auxiliary contact 41 of the first relay K1 is.
The shutter mechanism device of the present invention is electrically controlled as follows, see FIG. 4.
Opening a shutter:
when the PLC executes a shutter opening command, the first relay K1 is electrified, the first auxiliary contacts 11 and 14 of the first relay K1 are closed, the second auxiliary contacts 21 and 24 of the first relay K1 are closed, the shutter motor M is switched on by the direct current power supply 24V, and the motor rotates forwards. When the motor rotates the shutter plate 3 to open to the right position, the shutter opening limit sensor G1 opens to the right position, the signal is switched on, the second relay K2 is electrified, the first auxiliary contacts 11 and 14 of the second relay K2 are closed, and the shutter opening state lamp L1 is on; the second auxiliary contacts 21 and 24 of the second relay K2 are closed, the third auxiliary contacts 31 and 34 of the first relay K1 are closed, the third relay K3 is electrified, the first auxiliary contacts 11 and 14 of the third relay K3 are closed, the first electromagnet YA1 is electrified at the moment to suck the shutter plate 3, the shutter is opened, and meanwhile, the motor is powered off.
Closing a shutter:
when the PLC executes the shutter close command, the first relay K1 is de-energized, the first auxiliary contacts 11, 12 of the first relay K1 are closed, the second auxiliary contacts 21, 22 of the first relay K1 are closed, the shutter motor M is turned on by the reverse direct-current power supply 24V, and the motor is reversed. When the motor rotates the shutter plate 3 to close to the position, the shutter closing limit sensor G2 closes to the position, the signal is switched on, the fourth relay K4 is electrified, the second auxiliary contacts 21 and 24 of the fourth relay K4 are closed, and the shutter closing state lamp L2 is on; the first auxiliary contacts 11 and 14 of the fourth relay K4 are closed, the fourth auxiliary contacts 41 and 42 of the first relay K1 are closed, the third relay K3 is electrified, the second auxiliary contacts 21 and 24 of the third relay K3 are closed, at the moment, the second electromagnet YA2 is electrified to suck the shutter plate 3, the shutter is closed, and meanwhile, the motor is powered off.
Powering off and powering back on:
the first relay K1 belongs to a power-off state, the closed state of the first auxiliary contacts 11 and 14 of the first relay K1 is switched to the closed state of 11 and 12, the closed state of the second auxiliary contacts 21 and 24 of the first relay K1 is switched to the closed state of 21 and 22, the first auxiliary contacts 11 and 12 of the third relay K3 are closed, the second auxiliary contacts 21 and 22 of the third relay K3 are closed, the shutter motor M is switched on in a reverse direction of 24V, and the motor is switched in a reverse direction. When the motor rotates the shutter plate 3 to close to the position, the shutter closing limit sensor G2 closes to the position, the signal is switched on, the fourth relay K4 is electrified, the second auxiliary contacts 21 and 24 of the fourth relay K4 are closed, and the shutter closing state lamp L2 is on; the first auxiliary contacts 11 and 14 of the fourth relay K4 are closed, the fourth auxiliary contacts 41 and 42 of the first relay K1 are closed, the third relay K3 is electrified, the second auxiliary contacts 21 and 24 of the third relay K3 are closed, at the moment, the second electromagnet YA2 is electrified to suck the shutter plate 3, the shutter is closed, and meanwhile, the motor is powered off.
The shutter mechanism device is arranged at a ray exit port of an X-ray tube and is mainly used for controlling the opening and closing of a ray source window. The working process of the shutter mechanism device of the invention is as follows:
when a Programmable Logic Controller (PLC) sends a shutter opening instruction, a motor 8 rotates forwards, the motor 8 drives a rotating arm 4, the rotating arm 4 drives a shutter plate 3 to open a ray window 1, and the rotating arm 4 contacts a shutter opening position sensor 5; when the shutter is opened in place, the electromagnet 6 sucks the shutter plate 3, and then the motor 8 is powered off, so that the shutter cannot be closed due to vibration even if the equipment vibrates. At this time, the motor 8 has no load, and the motor 8 can be well protected. When the programmable logic controller PLC sends a shutter closing instruction, the motor 8 rotates reversely, the motor 8 drives the rotating arm 4, the rotating arm 4 drives the shutter plate 3 to close the ray window 1, and the rotating arm 4 contacts the shutter closing position sensor 5 at the moment; when the shutter is closed in place, the electromagnet 6 attracts the shutter plate 3, and the motor 8 is powered off, so that the service life of the equipment can be ensured. When the equipment is powered off suddenly, due to the X-ray source, rays are not generated after the power is off, and the safety problem cannot be caused. After the device is powered on again, the motor driving module controls the motor to rotate reversely, and the shutter is closed automatically, so that the phenomenon of ray leakage caused by the fact that the shutter is in an open state after the device is powered on is effectively avoided.
The shutter mechanism device is simple in structure, safe and practical, solves the problem of short service life of the shutter mechanism device, and meanwhile, does not bring safety problems due to the change of the driving structure mode.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A shutter mechanism device for a coating thickness gauge comprises a motor driving module, a motor (8), a shutter plate (3) and a rotating arm (4), wherein the shutter plate (3) is positioned above a ray emission window (1), the motor driving module controls the motor (8) to rotate, and a shaft of the motor (8) drives the rotating arm (4); the method is characterized in that:
the shutter mechanism device further comprises a fulcrum screw (2) and a position sensor (5), the shutter plate (3) is a curved bar plate, the front part of the shutter plate (3) is tightly attached to the ray emission window (1), the fulcrum screw (2) is installed at the middle front part of the shutter plate (3), the fulcrum screw (2) is fixedly installed on a frame (9), the rear part of the shutter plate (3) is connected with one end of a rotating arm (4), the other end of the rotating arm (4) is connected with a motor (8) shaft, the position sensors (5) are respectively installed on two sides of the rotating arm (4), the rotating arm (4) rotates forwards and backwards to drive the shutter plate (3) to rotate forwards and backwards along the fulcrum screw (2), so that the shutter plate (3) opens and closes the ray emission window (1), and the forward and backward rotation limit positions of the rotating arm (4) are sensed by the;
electromagnets (6) are respectively arranged at the forward and reverse rotation limit positions of the rear part of the shutter plate (3), and the electromagnets (6) are controlled by a motor driving module;
the motor drive module control circuit includes: a first relay (K1), a second relay (K2), a third relay (K3), a fourth relay (K4);
two ends of the first relay (K1) are connected with an output signal of the programmable logic controller PLC, two ends of the first relay (K1) are connected with a diode (D1) in parallel, and the first relay (K1) comprises four auxiliary contacts;
the positive end of the direct-current power supply is connected with a first auxiliary contact of a first relay (K1), a shutter closing state indicator lamp (L2), a shutter opening state indicator lamp (L1), a second contact of a shutter closing limit sensor (G2), a second contact of a shutter opening limit sensor (G1) and one end of a third relay (K3) in parallel; the negative end of the direct current power supply is connected with a third contact of a shutter closing limit sensor (G2), a third contact of a shutter opening limit sensor (G1), a second auxiliary contact of a second relay (K2) and one end of a second electromagnet (YA 2) in parallel;
the first relay (K1) has two corresponding ends at the first auxiliary contact, the first relay (K1) has the first auxiliary contact which is normally closed with the first corresponding end, the other end of the first auxiliary contact of the first relay (K1) is connected with the second auxiliary contact of the third relay (K3) after being connected with a series resistor (R1), and the other end of the first auxiliary contact of the first relay (K1) is connected with the first auxiliary contact of the third relay (K3) after being connected with a series resistor (R2); the second auxiliary contact of the first relay (K1) is connected with the negative end of the direct current power supply, the second auxiliary contact of the first relay (K1) has two corresponding ends, the second auxiliary contact of the first relay (K1) is normally closed with the first corresponding end thereof, the other end of the first auxiliary contact of the second auxiliary contact of the first relay (K1) is connected with the first auxiliary contact of the third relay (K3) after being connected with a series resistor (R3), and the other end of the second auxiliary contact of the first relay (K1) is connected with the second auxiliary contact of the third relay (K3) after being connected with a series resistor (R4);
the first auxiliary contact of the third relay (K3) has two corresponding ends, the first auxiliary contact of the third relay (K3) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the first auxiliary contact of the third relay (K3) is connected with the positive pole of the shutter motor M, and the other end of the second corresponding end of the first auxiliary contact of the third relay (K3) is disconnected; the second auxiliary contact of the third relay (K3) has two corresponding ends, the second auxiliary contact of the third relay (K3) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the second auxiliary contact of the third relay (K3) is connected with the negative electrode of the shutter motor M, and the other end of the second corresponding end of the second auxiliary contact of the third relay (K3) is disconnected; a capacitor (C1) and a positive-negative diode (D2) are connected in parallel at two ends of the shutter motor M;
the other end of the shutter-off state indicator lamp (L2) is connected with a second auxiliary contact of a fourth relay (K4), the second auxiliary contact of the fourth relay (K4) is provided with two corresponding ends, the second auxiliary contact of the fourth relay (K4) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the second auxiliary contact of the fourth relay (K4) is disconnected, and the other end of the second corresponding end of the second auxiliary contact of the fourth relay (K4) is connected with the negative end of the direct-current power supply;
the other end of the shutter opening state indicator lamp (L1) is connected with the other end of the second corresponding end of the first auxiliary contact of the second relay (K2), the first auxiliary contact of the second relay (K2) is provided with two corresponding ends, the first auxiliary contact of the second relay (K2) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the first auxiliary contact of the second relay (K2) is disconnected, and the first auxiliary contact of the second relay (K2) is connected with the negative end of the direct-current power supply;
one end of a fourth relay (K4) is connected with the negative end of the direct-current power supply, and the other end of the fourth relay (K4) is connected with a first contact of a shutter-off limit sensor (G2);
one end of a second relay (K2) is connected with the negative end of a direct current power supply, and the other end of the second relay (K2) is connected with a first contact of a shutter opening limit (G1) sensor;
the other end of a third relay (K3) is connected in parallel with a third auxiliary contact of a first relay (K1) and a first auxiliary contact of a fourth relay (K4), the third auxiliary contact of the first relay (K1) is provided with two corresponding ends, the third auxiliary contact of the first relay (K1) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the third auxiliary contact of the first relay (K1) is disconnected, the other end of the second corresponding end of the third auxiliary contact of the first relay (K1) is connected with a first electromagnet (YA 1), the other end of the first electromagnet (YA 1) is connected with the second corresponding end of the second auxiliary contact of a second relay (K2), the second auxiliary contact of the second relay (K2) is provided with two corresponding ends, the second auxiliary contact of the second relay (K2) is normally closed with the first corresponding end thereof, and the other end of the second auxiliary contact of the second relay (K2) is disconnected;
the first auxiliary contact of the fourth relay (K4) is provided with two corresponding ends, the first auxiliary contact of the fourth relay (K4) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the first auxiliary contact of the fourth relay (K4) is disconnected, the other end of the second corresponding end of the first auxiliary contact of the fourth relay (K4) is normally closed with the fourth auxiliary contact of the first relay (K1), the fourth auxiliary contact of the first relay (K1) is provided with two corresponding ends, the fourth auxiliary contact of the first relay (K1) is normally closed with the first corresponding end thereof, the other end of the first corresponding end of the fourth auxiliary contact of the first relay (K1) is connected with the second electromagnet (YA 2), the other end of the second electromagnet (YA 2) is connected with the negative pole of a direct current power supply, and the other end of the second corresponding end of the fourth auxiliary contact of the first relay (K1) is disconnected.
2. The shutter mechanism device for a coating thickness gauge as claimed in claim 1, wherein: the rear part of the shutter plate (3) is provided with an elongated slot, the end part of the rotating arm (4) is provided with a pin shaft (7), and the elongated slot of the shutter plate (3) is sleeved on the pin shaft (7) of the rotating arm (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510146602.2A CN106152981B (en) | 2015-03-31 | 2015-03-31 | Shutter mechanism device for coating thickness gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510146602.2A CN106152981B (en) | 2015-03-31 | 2015-03-31 | Shutter mechanism device for coating thickness gauge |
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| CN106152981A CN106152981A (en) | 2016-11-23 |
| CN106152981B true CN106152981B (en) | 2019-12-31 |
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| CN201016714Y (en) * | 2007-02-26 | 2008-02-06 | 宝山钢铁股份有限公司 | Ray source shutter mechanism for belt steel thickness gauge |
| CN201587082U (en) * | 2009-12-09 | 2010-09-22 | 软控股份有限公司 | Electron irradiation device |
| CN201664703U (en) * | 2010-03-02 | 2010-12-08 | 马鞍山市锐泰科技有限公司 | Novel ray generating device for isotopic thickness gauge |
| CN102271226A (en) * | 2010-06-07 | 2011-12-07 | 德拉格安全股份两合公司 | Thermal imaging camera with a fast electromechanical shutter device |
| CN202142310U (en) * | 2011-03-10 | 2012-02-08 | 中国原子能科学研究院 | Beam shutter used for single event effect ground accelerator simulation test |
| CN203772235U (en) * | 2014-03-13 | 2014-08-13 | 马鞍山恒瑞测量设备有限公司 | Thickness meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4467295B2 (en) * | 2003-12-12 | 2010-05-26 | セイコープレシジョン株式会社 | Aperture device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201016714Y (en) * | 2007-02-26 | 2008-02-06 | 宝山钢铁股份有限公司 | Ray source shutter mechanism for belt steel thickness gauge |
| CN201587082U (en) * | 2009-12-09 | 2010-09-22 | 软控股份有限公司 | Electron irradiation device |
| CN201664703U (en) * | 2010-03-02 | 2010-12-08 | 马鞍山市锐泰科技有限公司 | Novel ray generating device for isotopic thickness gauge |
| CN102271226A (en) * | 2010-06-07 | 2011-12-07 | 德拉格安全股份两合公司 | Thermal imaging camera with a fast electromechanical shutter device |
| CN202142310U (en) * | 2011-03-10 | 2012-02-08 | 中国原子能科学研究院 | Beam shutter used for single event effect ground accelerator simulation test |
| CN203772235U (en) * | 2014-03-13 | 2014-08-13 | 马鞍山恒瑞测量设备有限公司 | Thickness meter |
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| CN106152981A (en) | 2016-11-23 |
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