CN211573973U - Novel but compensation formula packing ring of control device - Google Patents
Novel but compensation formula packing ring of control device Download PDFInfo
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- CN211573973U CN211573973U CN202020096583.3U CN202020096583U CN211573973U CN 211573973 U CN211573973 U CN 211573973U CN 202020096583 U CN202020096583 U CN 202020096583U CN 211573973 U CN211573973 U CN 211573973U
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Abstract
The utility model discloses a novel but compensation formula packing ring device of control, including the packing ring module, packing ring module top is last anti-skidding support piece, it is equipped with the insulating piece to go up anti-skidding support piece bottom, the insulating piece bottom is equipped with piezoelectric sensing piece, piezoelectric sensing piece bottom is equipped with the insulating piece, piezoelectric sensing piece bottom is equipped with piezoelectric actuator, the piezoelectric actuator bottom is equipped with down anti-skidding support piece, it is equipped with two convex last top caps to go up the anti-skidding support piece outside, it is equipped with the recess to go up anti-skidding support piece side relative position, it is equipped with the arch to go up top cap medial surface relative position, go up anti-skidding support piece and last top cap looks joint, it is equipped with the restraint lantern ring to go up the top cap bottom, piezoelectric actuator lateral surface is anterior, the rear portion is equipped with the anodal silver. The utility model has the advantages that: not only solved the not hard up problem of bolt, can also monitor connection status.
Description
Technical Field
The utility model belongs to the technical field of the packing ring, concretely relates to novel but compensation formula packing ring of control device.
Background
In production life, two members are generally required to be connected, and the bolt connection structure is widely applied to various fields because the bolt connection structure is easy to mount or dismount and can bear large load.
However, the bolt is affected by various factors in the service environment, the bolt loosening caused by the attenuation of the axial force of the bolt connection occurs, and in some environments, the sudden fracture phenomenon even occurs, so that the bolt not only has economic impact, but also can cause a series of accidents.
For this reason, some measures are needed to slow down or compensate the attenuation of the axial force of the bolt so as to avoid economic loss or accidents, and at present, the commonly used measure for preventing the bolt from loosening is a spring washer, which is low in cost and convenient to install, but has low anti-loosening capability, and has low utilization rate in products requiring high reliability, and the measure is not used in important structural connection parts.
Therefore, a device for effectively reducing the attenuation of the axial force of the bolt and preventing the bolt from loosening is needed.
Nowadays, piezoelectric ceramic pieces are more and more widely applied in production and life, and have piezoelectric effect, that is, the effect that the piezoelectric ceramic pieces can generate electric signals when deformed under the action of external force is positive piezoelectric effect, and the effect that the piezoelectric ceramic pieces can generate deformation under the action of applied voltage is inverse piezoelectric effect.
Disclosure of Invention
The utility model provides a novel but compensation formula packing ring device of control has not only solved the not hard up problem of bolt, can also monitor connection status.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a novel monitorable compensation type gasket device comprises a gasket module, wherein an upper anti-skid supporting sheet is arranged at the top of the gasket module, an insulating sheet is arranged at the bottom of the upper anti-skid supporting sheet, a piezoelectric sensing sheet is arranged at the bottom of the insulating sheet, an insulating sheet is arranged at the bottom of the piezoelectric sensing sheet, a piezoelectric actuator is arranged at the bottom of the piezoelectric sensing sheet, a lower anti-skid supporting sheet is arranged at the bottom of the piezoelectric actuator, the upper anti-skid supporting sheet, the insulating sheet, the piezoelectric actuator and the lower anti-skid supporting sheet are all of horizontally-placed annular structures, the outside diameters of the upper anti-skid supporting sheet, the insulating sheet, the piezoelectric sensing sheet, the piezoelectric actuator and the lower anti-skid supporting sheet are the same, the inside diameters of the upper anti-skid supporting sheet, the insulating sheet, the piezoelectric sensing sheet, the piezoelectric actuator and the lower anti-skid supporting sheet are the same, two arc-shaped upper top, the relative position of the inner side surface of the upper top cover is provided with a bulge, the upper anti-skid supporting sheet is clamped with the upper top cover, the bottom of the upper top cover is provided with a constraint lantern ring, the constraint lantern ring is of a ring-shaped structure, the inner side surface of the constraint lantern ring is matched with the piezoelectric sensing sheet, the diameter of the outer side of the piezoelectric actuator is matched with the diameter of the outer side of the piezoelectric sensing sheet, the front side of the constraint lantern ring and the relative position of the rear side of the constraint lantern ring are respectively provided with a lead notch, the front part and the rear part of the outer side surface of the piezoelectric sensing sheet are respectively provided with a piezoelectric actuator anode silver plating sheet and a piezoelectric actuator cathode silver plating sheet, the upper top cover is fixedly connected with the constraint lantern ring through screws, and the lower top cover is fixedly connected.
Furthermore, the upper anti-skid supporting piece and the lower anti-skid supporting piece are symmetrical in structure, anti-skid protrusions are arranged on the top surface of the upper anti-skid supporting piece, the top surface of the upper anti-skid supporting piece is in contact with the bolt, and the bottom surface of the lower anti-skid supporting piece is in contact with other workpieces.
Furthermore, the inner diameters of the upper anti-skid supporting sheet, the insulating sheet, the piezoelectric sensing sheet, the piezoelectric actuator and the lower anti-skid supporting sheet are matched with the bolts.
Furthermore, the positions of the piezoelectric actuator positive electrode silver-plated piece, the lead notch and the piezoelectric sensing piece positive electrode silver-plated piece correspond to each other, and the positions of the piezoelectric sensing piece negative electrode silver-plated piece and the piezoelectric actuator negative electrode silver-plated piece correspond to each other.
Furthermore, the size of the positive silver-plated piece and the size of the negative silver-plated piece of the piezoelectric sensing piece are matched with the thickness of the piezoelectric sensing piece, and the size of the positive silver-plated piece and the size of the negative silver-plated piece of the piezoelectric actuator are matched with the thickness of the piezoelectric actuator.
Furthermore, the positive electrode silver-plated piece of the piezoelectric sensing piece and the negative electrode silver-plated piece of the piezoelectric sensing piece are electrically connected with the signal collector, and the positive electrode silver-plated piece of the piezoelectric actuator and the negative electrode silver-plated piece of the piezoelectric actuator are electrically connected with the power supply.
Furthermore, the groove on the side surface of the upper anti-skid supporting sheet and the bulge on the inner side surface of the upper top cover are arranged in a clearance mode, and the clearance is matched with the expansion volume of the piezoelectric actuator.
Compared with the prior art, the beneficial effects of the utility model are that:
in the utility model, the piezoelectric actuator is arranged and powered on, the inverse piezoelectric effect of the piezoelectric ceramic piece is utilized, the piezoelectric actuator expands after being powered on, so that the bolt generates expansion force and pressure in the axial direction in the tightening state, the attenuation of the axial force of the bolt is compensated, and the bolt is effectively prevented from loosening;
the piezoelectric sensor piece is arranged and is externally connected with a signal collector, the piezoelectric sensor piece is stressed by the change fluctuation of the axial force to deform in the expansion process of the piezoelectric actuator, the piezoelectric sensor piece can generate current due to the positive piezoelectric effect of the piezoelectric sensor piece, the current can be transmitted to the signal collector through the positive silver-plated piece of the piezoelectric sensor piece and the negative silver-plated piece of the piezoelectric sensor piece, the expansion condition of the piezoelectric actuator can be monitored by monitoring the current condition generated by the piezoelectric sensor piece, and the compensation condition of the attenuation of the washer module to the axial force of the bolt can be determined, so that the use of the washer module is more convenient and humanized;
the upper and lower parts of the piezoelectric sensing piece are provided with the insulating pieces, so that the current of the piezoelectric actuator is effectively prevented from being transmitted to the piezoelectric sensing piece, the piezoelectric sensing piece expands together, and the detection effect of the piezoelectric sensing piece on the piezoelectric actuator is protected;
the invention can effectively compensate the axial force of the bolt, prevent the bolt from loosening, feed back the change of the axial force in real time, solve the problem of loosening of the bolt and monitor the connection state.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic structural diagram of an actual compensation force test experiment of the device;
FIG. 5 shows parameters of a piezoelectric actuator used in the experimental setup;
FIG. 6 is a graph comparing the effect of piezoelectric actuators on axial force of a bolt with different applied voltages;
FIG. 7 is a schematic diagram illustrating changes in axial force of a bolt when different voltages are applied to a piezoelectric actuator in an experiment;
fig. 8 is a schematic diagram of the change of the axial force of the bolt when no voltage is applied to the piezoelectric actuator in the experiment.
In the figure: 1. the anti-skid device comprises an upper anti-skid supporting sheet, 2 insulating sheets, 3 piezoelectric sensing sheets, 4 piezoelectric actuators, 5 lower anti-skid supporting sheets, 6 piezoelectric sensing sheet positive electrode silver plating sheets, 7 piezoelectric actuator positive electrode silver plating sheets, 8 constraint lantern rings, 9 screws, 10 upper top covers, 11 lower top covers, 12 gasket modules, 13 bolts, 14 power supplies, 15 test tables, 16 connectors, 17 tension sensors, 18 ground, 19 lead gaps, 20 piezoelectric sensing sheet negative electrode silver plating sheets and 21 piezoelectric actuator negative electrode silver plating sheets.
Detailed Description
Example (b): as shown in fig. 1 to 4, the anti-skid device comprises a gasket module 12, an upper anti-skid supporting sheet 1 is arranged on the top of the gasket module 12, an insulating sheet 2 is arranged at the bottom of the upper anti-skid supporting sheet 1, a piezoelectric sensing sheet 3 is arranged at the bottom of the insulating sheet 2, an insulating sheet 2 is arranged at the bottom of the piezoelectric sensing sheet 3, a piezoelectric actuator 4 is arranged at the bottom of the piezoelectric sensing sheet 3, a lower anti-skid supporting sheet 5 is arranged at the bottom of the piezoelectric actuator 4, the upper anti-skid supporting sheet 1, the insulating sheet 2, the piezoelectric sensing sheet 3, the piezoelectric actuator 4 and the lower anti-skid supporting sheet 5 are all in a horizontally placed circular ring type structure, the outer diameters of the upper anti-skid supporting sheet 1, the insulating sheet 2, the piezoelectric sensing sheet 3, the piezoelectric actuator 4 and the lower anti-skid supporting sheet 5 are the same, two arc-skid top covers 10 are arranged on the outer side of the upper anti-skid supporting sheet 1, a groove is arranged at the opposite position of the side surface of the upper anti-skid supporting sheet 1, a bulge is arranged at the opposite position of the inner side surface of the upper top cover 10, the upper anti-skid supporting sheet 1 is clamped with the upper top cover 10, the bottom of the upper top cover 10 is provided with a restraining lantern ring 8, the restraining lantern ring 8 is of a ring structure, the inner side surface of the restraining lantern ring 8 is matched with the outer diameters of the piezoelectric sensing sheet 3 and the piezoelectric actuator 4, the opposite positions of the front side and the rear side of the restraining lantern ring 8 are respectively provided with a lead notch 19, the front part and the rear part of the outer side surface of the piezoelectric sensing sheet 3 are respectively provided with a piezoelectric, the piezoelectric sensing piece cathode silver-plated piece 20, the piezoelectric actuator positive electrode silver-plated piece 7 and the piezoelectric actuator negative electrode silver-plated piece 21 are respectively arranged at the front part and the rear part of the outer side surface of the piezoelectric actuator 4, the upper top cover 10 is fixedly connected with the constraint lantern ring 8 through a screw 9, and the lower top cover 11 is fixedly connected with the constraint lantern ring 8 through a screw 9.
The structure of the upper anti-skid supporting sheet 1 is symmetrical to that of the lower anti-skid supporting sheet 5, the top surface of the upper anti-skid supporting sheet 1 is provided with anti-skid protrusions, the top surface of the upper anti-skid supporting sheet 1 is contacted with a bolt 13, the bottom surface of the lower anti-skid supporting sheet 5 is contacted with other workpieces, the inner side diameters of the upper anti-skid supporting sheet 1, an insulating sheet 2, a piezoelectric sensing sheet 3, a piezoelectric actuator 4 and the lower anti-skid supporting sheet 5 are matched with the bolt 13, the positions of a piezoelectric actuator positive silver plating sheet 7, a lead notch 19 and a piezoelectric sensing sheet positive silver plating sheet 6 are corresponding, the positions of a piezoelectric sensing sheet negative silver plating sheet 20 and a piezoelectric actuator negative silver plating sheet 21 are corresponding, the sizes of the piezoelectric sensing sheet positive silver plating sheet 6 and the piezoelectric sensing sheet negative silver plating sheet 20 are matched with the thickness of the piezoelectric sensing sheet 3, the sizes of the piezoelectric actuator positive silver plating sheet 7 and the piezoelectric actuator negative silver plating sheet 21 are matched with the thickness of the piezoelectric actuator 4, the positive silver-plated piece 6 and the negative silver-plated piece 20 of the piezoelectric sensing piece are electrically connected with the signal collector, the positive silver-plated piece 7 and the negative silver-plated piece 21 of the piezoelectric actuator are electrically connected with the power supply 14, the groove on the side surface of the upper anti-skid supporting piece 1 and the protrusion gap on the inner side surface of the upper top cover 10 are arranged, and the gap is matched with the expansion volume of the piezoelectric actuator 4.
The working process is as follows: inserting the bolt 13 into an inner hole of the gasket module 12, screwing the bolt 13 and a corresponding workpiece, after screwing, respectively and electrically connecting the piezoelectric actuator anode silver-plated sheet 7 with the anode of the power supply 14 by using a lead, electrically connecting the piezoelectric actuator cathode silver-plated sheet 21 with the cathode of the power supply 14, connecting the piezoelectric sensor sheet anode silver-plated sheet 6 and the piezoelectric sensor sheet cathode silver-plated sheet 20 with the signal acquisition unit, and wrapping all electric contacts by using hot melt adhesive so as to avoid electric leakage.
After the bolt 13 is screwed down, the power supply 14 is electrified, voltage is applied to the two ends of the piezoelectric actuator to enable the piezoelectric actuator to deform and expand, pressure is generated on the bolt 13 to increase axial force, the piezoelectric sensing piece 3 is pressed and deformed by force change in the process to generate an electric signal, and the electric signal is reflected in the signal collector to achieve the monitoring effect.
The following experiment was performed for the ability of the device to actually compensate for the bolt axial force.
The experimental process comprises the following steps: as shown in fig. 4, the gasket module is inserted into the bolt, the bolt is inserted into the fixed test table, the gasket module is in contact with the top surface of the test table, the bottom of the bolt is fixedly provided with a connector, the bottom of the connector is fixedly provided with a tension sensor, the bottom of the tension sensor is fixedly connected with the ground, the right side of the gasket module is provided with a power supply, and the gasket module is electrically connected with the power supply.
The bolt is tightened with a wrench, the axial force received by the pressure sensor is displayed by the display, and the force at that time is recorded as the initial force, which is shown here as kg.
Here we set the initial axial force of the bolt near 148kg, and apply 0V, 30V, 90V, 120V to the piezoelectric ceramic plates, and then record the magnitude of the axial force every one minute, and each set of experiments records 40 minutes.
It can be seen from fig. 6, 7 and 8 that the rate of decay of the axial force is relatively fast within three minutes after the bolt is just loosened by the wrench, because the bolt is in elastic deformation when the bolt is just tightened, the bolt releases stress after the wrench is unloaded, and the rate of early release is high.
With no applied voltage, 0V, the bolt axial force continues to decay, but the decay rate decreases with time.
When the voltage of 30V is applied, the decay rate of the bolt is slower in the first few minutes compared with that when the voltage is not applied, and then the axial force keeps slightly rising, namely, the axial force has proper compensation effect.
When the voltage of 90V is applied, the decay rate of the bolt in the first few minutes is slower than that when the voltage of 30V is applied, and the rising rate of the axial force after the bolt is obviously faster than that when the voltage of 30V is applied, but the axial force is slower along with the change of time and tends to be gentle.
When the voltage of 120V is applied, the decay rate of the bolt in the first few minutes is slower than that when the voltage of 90V is applied, and the rising rate of the axial force after the bolt is slightly faster than that when the voltage of 90V is applied, but the rising rate is not particularly obvious and tends to be gentle.
The piezoelectric actuator used in the experiment was a piezoelectric ceramic plate with dimensions of 30mm outer diameter, 12mm inner diameter and 5mm thickness, and other parameters are shown in fig. 5.
Claims (7)
1. The utility model provides a novel but compensation formula packing ring device of control which characterized in that: the anti-skid device comprises a gasket module (12), wherein an upper anti-skid supporting sheet (1) is arranged at the top of the gasket module (12), an insulating sheet (2) is arranged at the bottom of the upper anti-skid supporting sheet (1), a piezoelectric sensing sheet (3) is arranged at the bottom of the insulating sheet (2), an insulating sheet (2) is arranged at the bottom of the piezoelectric sensing sheet (3), a piezoelectric actuator (4) is arranged at the bottom of the piezoelectric actuator (3), a lower anti-skid supporting sheet (5) is arranged at the bottom of the piezoelectric actuator (4), the outer side diameters of the upper anti-skid supporting sheet (1), the insulating sheet (2), the piezoelectric actuator (3), the lower anti-skid supporting sheet (5) are the same, the upper anti-skid supporting sheet (1), the insulating sheet (2) and the lower anti-skid supporting sheet (5) are the same, and the anti-skid supporting sheet (1) is arranged on the same level, The diameters of the inner sides of the piezoelectric sensing piece (3), the piezoelectric actuator (4) and the lower anti-skid supporting piece (5) are the same, two arc-shaped upper top covers (10) are arranged on the outer sides of the upper anti-skid supporting pieces (1), grooves are formed in the opposite positions of the side faces of the upper anti-skid supporting pieces (1), protrusions are arranged at the opposite positions of the inner side faces of the upper top covers (10), the upper anti-skid supporting pieces (1) are clamped with the upper top covers (10), restraining lantern rings (8) are arranged at the bottoms of the upper top covers (10), the restraining lantern rings (8) are of a circular structure, the inner side faces of the restraining lantern rings (8) are matched with the diameters of the outer sides of the piezoelectric sensing piece (3) and the piezoelectric actuator (4), lead notches (19) are respectively arranged at the front sides and the rear sides of the restraining lantern rings (8), a piezoelectric sensing piece anode silver plated piece (6) and a piezoelectric sensing piece cathode silver plated piece (20) are, the front part and the rear part of the outer side surface of the piezoelectric actuator (4) are respectively provided with a piezoelectric actuator anode silver-plated sheet (7) and a piezoelectric actuator cathode silver-plated sheet (21), an upper top cover (10) is fixedly connected with a constraint lantern ring (8) through a screw (9), and a lower top cover (11) is fixedly connected with the constraint lantern ring (8) through the screw (9).
2. The novel monitorable compensating washer assembly according to claim 1 and wherein: the upper anti-skid supporting piece (1) and the lower anti-skid supporting piece (5) are symmetrical in structure, anti-skid protrusions are arranged on the top surface of the upper anti-skid supporting piece (1), the top surface of the upper anti-skid supporting piece (1) is in contact with the bolts (13), and the bottom surface of the lower anti-skid supporting piece (5) is in contact with other workpieces.
3. The novel monitorable compensating washer assembly according to claim 1 and wherein: the inner diameters of the upper anti-skid supporting piece (1), the insulating piece (2), the piezoelectric sensing piece (3), the piezoelectric actuator (4) and the lower anti-skid supporting piece (5) are matched with the bolt (13).
4. The novel monitorable compensating washer assembly according to claim 1 and wherein: the positions of the piezoelectric actuator positive electrode silver-plated sheet (7), the lead notch (19) and the piezoelectric sensing sheet positive electrode silver-plated sheet (6) correspond to each other, and the positions of the piezoelectric sensing sheet negative electrode silver-plated sheet (20) and the piezoelectric actuator negative electrode silver-plated sheet (21) correspond to each other.
5. The novel monitorable compensating washer assembly according to claim 1 and wherein: the size of the piezoelectric sensing piece positive electrode silver-plated piece (6) and the size of the piezoelectric sensing piece negative electrode silver-plated piece (20) are matched with the thickness of the piezoelectric sensing piece (3), and the size of the piezoelectric actuator positive electrode silver-plated piece (7) and the size of the piezoelectric actuator negative electrode silver-plated piece (21) are matched with the thickness of the piezoelectric actuator (4).
6. The novel monitorable compensating washer assembly according to claim 1 and wherein: the positive electrode silver-plated piece (6) and the negative electrode silver-plated piece (20) of the piezoelectric sensing piece are electrically connected with the signal collector, and the positive electrode silver-plated piece (7) and the negative electrode silver-plated piece (21) of the piezoelectric actuator are electrically connected with the power supply (14).
7. The novel monitorable compensating washer assembly according to claim 1 and wherein: the groove on the side surface of the upper anti-skid supporting sheet (1) and the bulge on the inner side surface of the upper top cover (10) are arranged in a clearance way, and the clearance is matched with the expansion volume of the piezoelectric actuator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020096583.3U CN211573973U (en) | 2020-01-16 | 2020-01-16 | Novel but compensation formula packing ring of control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020096583.3U CN211573973U (en) | 2020-01-16 | 2020-01-16 | Novel but compensation formula packing ring of control device |
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| Publication Number | Publication Date |
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| CN211573973U true CN211573973U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020096583.3U Active CN211573973U (en) | 2020-01-16 | 2020-01-16 | Novel but compensation formula packing ring of control device |
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| CN (1) | CN211573973U (en) |
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- 2020-01-16 CN CN202020096583.3U patent/CN211573973U/en active Active
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