CN115046843B - Quick detection device in batches is creep of metal zero length spring normal atmospheric temperature - Google Patents
Quick detection device in batches is creep of metal zero length spring normal atmospheric temperature Download PDFInfo
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- CN115046843B CN115046843B CN202210543340.3A CN202210543340A CN115046843B CN 115046843 B CN115046843 B CN 115046843B CN 202210543340 A CN202210543340 A CN 202210543340A CN 115046843 B CN115046843 B CN 115046843B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The device for quickly detecting the normal-temperature creep of the metal zero-length springs in batches comprises a metal vacuum shell, a heat-preserving shell, a rotating mechanism, a locking device and the metal zero-length springs; the top of the metal vacuum shell is movably connected with the top of the left end of the heat preservation shell cover through a rotating mechanism, the metal vacuum shell is fixed with the heat preservation shell cover through a locking device, a heat preservation shell is arranged in the metal vacuum shell, and polyurethane heat preservation lamination is arranged between the metal vacuum shell and the heat preservation shell. The whole shell can play a double role of heat insulation and supporting the cavity, is beneficial to miniaturization and portability of the device, can provide a heat source for the metal vacuum shell by combining the heat preservation shell and the temperature control device, keeps the temperature of the device constant in the detection process, has a high-precision exquisite heat preservation structure, and reduces the influence of environmental temperature change on creep measurement precision.
Description
Technical Field
The invention relates to a metal zero-length spring monitoring technology, belongs to the field of metal zero-length springs, and particularly relates to a device for rapidly detecting normal-temperature creep of metal zero-length springs in batches.
Background
Relaxation and creep of a metal zero length spring are one of the fatal weaknesses of the spring. The reflection to the sensor is zero drift, and for the gravity meter, the reflection is lattice dropping. These directly affect the accuracy, reliability, etc. of the sensor. Therefore, the research on the normal temperature creep of the metal spring is very critical to the research on a high-precision gravity instrument. The metal zero-length spring normal-temperature creep monitoring device can accurately measure and analyze scientific and practical problems such as normal-temperature creep drift value and law in real time, guide and invent artificial aging to accelerate the normal-temperature creep of the spring, improve the comprehensive performance of the spring, shorten the development period of a gravity meter and reduce the development cost.
The metal zero length spring is hung on a counterweight or is acted by other external force, and displacement is generated. This displacement is a result of the deformation of the spring wire. The deformation is initially in the elastic range, but over time it is partly gradually transformed into plastic deformation, thus giving rise to a permanent deformation, which is called creep, if it is caused by a constant force. The creep mechanism of a metal zero-length spring is not completely explained in theory at present. This is thought to be due to plastic deformation caused by viscous flow of material under load and temperature, and the release of internal stress may still be a major cause for high precision springs.
The disclosure of this background section is only intended to increase the understanding of the general background of the present patent application and should not be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to solve the problem that external environmental factors influence a measurement result in the prior art, and provides a device for rapidly detecting normal-temperature creep of a metal zero-length spring in batches, which is accurate in measurement result.
In order to achieve the above object, the technical solution of the present invention is: the device for quickly detecting the normal-temperature creep of the metal zero-length springs in batches comprises a metal vacuum shell, a heat-preserving shell, a rotating mechanism, a locking device and the metal zero-length springs;
the top of the metal vacuum shell is movably connected with the top of the left end of the heat preservation shell cover through a rotating mechanism, the metal vacuum shell and the heat preservation shell cover are fixed through a locking device, a heat preservation shell is arranged in the metal vacuum shell, a polyurethane heat preservation layer is arranged between the metal vacuum shell and the heat preservation shell, the top of the heat preservation shell is matched with the bottom of the support cover plate in a clamping mode, two groups of screw rod guide rails are arranged in the heat preservation shell, one ends of the screw rod guide rails are connected with one ends of the support rods, the other ends of the two support rods are connected with the bottom of the support cover plate, the bottom of the support cover plate is connected with the top of a suspension stud, the bottom of the suspension stud is connected with the top of a metal zero-length spring, and the bottom of the metal zero-length spring is connected with the top of the counterweight body;
the bottom of the inner wall of the metal vacuum shell is connected with the bottom of a central support column, the top of the central support column penetrates through the bottom of the heat-insulating shell and extends into the heat-insulating shell, the top of the central support column is connected with a central rotary table through a central bearing, a lock nut is arranged on the inner ring of the central bearing, a voice coil motor is arranged on the side surface of the central support column positioned in the heat-insulating shell, the output end of the voice coil motor is connected with the central rotary table, the top of the central rotary table is connected with the bottom of a point laser displacement sensor, and the point laser displacement sensor corresponds to the position of a counterweight body;
the device comprises a metal vacuum shell, a temperature control device, a data acquisition device, a displacement measurement and control device, a rotation control device, an adjusting stud and a control device, wherein the temperature control device is arranged in the middle of the left side of the metal vacuum shell;
the displacement measurement and control device is in signal connection with the screw rod guide rail, the rotation control device is in signal connection with the voice coil motor, and the data acquisition device is in signal connection with the point laser displacement sensor.
The locking device comprises a fixing rod, an adjusting rod and a locking bolt, wherein the bottom of the fixing rod is connected with the top of the heat-preserving shell cover, the top of the fixing rod is movably connected with one end of the adjusting rod through a rotating shaft, the other end of the adjusting rod is connected with the outer side of a fastening nut, the inner ring of the fastening nut is in threaded connection with the locking bolt, and the top of the locking bolt is in butt joint with the metal vacuum shell.
The inner wall side face of the metal vacuum shell is provided with a connecting rod, and one end of the connecting rod, far away from the inner wall of the metal vacuum shell, penetrates through the heat-insulating shell and extends to the inside of the heat-insulating shell to be connected with the lead screw guide rail.
The number of the connecting rods is four, two connecting rods are in a group, and the two groups of connecting rods are respectively positioned at the left side and the right side of the heat preservation shell and connected with the lead screw guide rail.
The number of the suspension studs is eight, and the eight suspension studs are uniformly and circumferentially arranged by taking the circle center of the supporting cover plate as the center.
The suspension stud comprises a threaded column, a connecting column, a suspension block and a hook, wherein the top of the threaded column is connected with the bottom of the support cover plate, the bottom of the threaded column is connected with the top of the connecting column, the bottom of the connecting column is connected with the top of the suspension block, the bottom of the suspension block is connected with the top of the hook, and the bottom of the hook is connected with the top of the metal zero-length spring.
The rotating mechanism comprises an upper rotating rod, a rotating bolt and a lower rotating rod, one end of the upper rotating rod is connected with the top of the heat-preserving shell cover, one end of the lower rotating rod is connected with the left side of the metal vacuum shell, the other end of the upper rotating rod is connected with the other end of the lower rotating rod through the rotating bolt, and a locking nut is arranged on the side face of the rotating bolt.
The bottom of central revolving stage is provided with the rotation gear, and the external tooth of rotation gear meshes with the gear on the voice coil motor.
The number of the adjusting studs is three, and the three adjusting studs are arranged at the bottom of the metal vacuum shell in an equal triangle shape.
The adjusting stud comprises a connecting stud, an auxiliary stud, a rotating handle and a supporting column, wherein the top of the connecting stud is fixedly connected with the bottom of the metal vacuum shell, the bottom of the connecting stud is connected with the top of the auxiliary stud, the outer side of the auxiliary stud is in threaded connection with the inner side of the rotating handle, and the bottom of the rotating handle is connected with the top of the supporting column.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the rapid detection device for the normal-temperature creep of the metal zero-length springs in batches, the top of the metal vacuum shell is movably connected with the bottom of the right end of the heat preservation shell cover through the rotating mechanism, the metal vacuum shell is fixed with the heat preservation shell cover through the locking device, the heat preservation shell is arranged in the metal vacuum shell, the polyurethane heat preservation layer is arranged between the metal vacuum shell and the heat preservation shell, the metal vacuum shell is of a hollow structure with a certain wall thickness, the hollow part is vacuumized, the whole shell can play the double roles of heat insulation and supporting cavities, the miniaturization and portability of the device are facilitated, meanwhile, a heat source can be provided for the metal vacuum shell by combining the heat preservation shell and the temperature control device, the temperature of the device in the detection process is kept constant, the heat preservation structure is exquisite with high precision, and the influence of environmental temperature change on creep measurement precision is reduced. Therefore, the invention has constant temperature and better temperature control effect.
2. In the device for rapidly detecting the normal-temperature creep of the metal zero-length springs in batches, the voice coil motor is arranged on the side surface of the central support column, which is positioned in the heat-insulating shell, the output end of the voice coil motor is connected with the central turntable, the top of the central turntable is connected with the bottom of the point laser displacement sensor, the point laser displacement sensor corresponds to the position of the counterweight body, the metal zero-length springs are hung on the counterweight body or acted by other external forces to generate displacement, the voice coil motor can rotate with the point laser displacement sensor, the lead screw guide rail can realize rapid replacement of the metal zero-length springs in batches, and along with the equal rotation angle of the central turntable and the equal division angle of the metal zero-length springs, the rapid, batch and efficient automatic high-precision monitoring of the creep of the metal spring nanometer level can be realized, and an important technical laying pad is made for deeply analyzing the normal-temperature creep rule of the high-precision metal zero-length springs. Therefore, the invention is convenient to detect, and simultaneously can detect a plurality of metal zero-length springs respectively.
3. According to the normal-temperature creep batch rapid detection device for the metal zero-length springs, the temperature control device is arranged at the left middle section of the metal vacuum shell 1, the data acquisition device is arranged below the temperature control device at the left side of the metal vacuum shell, the length change of the springs caused by creep relaxation along with time of batch numbering of the metal zero-length springs can be realized, namely, the displacement change measured by the point laser displacement sensor at intervals is continuous, the displacement measurement and control device is arranged at the right middle section of the metal vacuum shell, the rotation control device is arranged below the displacement measurement and control device at the right side of the metal vacuum shell, the relevant factors of all measurement results are monitored, the data are acquired, the influence of external environment factors on the measurement results is greatly reduced, and the accuracy of the measurement results is ensured. Therefore, the invention has higher accuracy of the measurement result and greatly reduces the influence of external factors on the measurement result.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic distribution of suspension studs according to the present invention.
FIG. 3 is a schematic view of the structure of a suspension stud according to the present invention.
Fig. 4 is a schematic view of the structure of the locking device of the present invention.
Fig. 5 is a schematic structural view of a rotating mechanism in the present invention.
FIG. 6 is a schematic view of the structure of an adjusting stud according to the present invention.
In the figure: the metal vacuum shell 1, the polyurethane heat preservation layer 2, the temperature control device 3, the heat preservation shell 4, the rotating mechanism 5, the upper rotating rod 51, the rotating bolt 52, the lower rotating rod 53, the locking nut 54, the heat preservation shell cover 6, the locking device 7, the fixed rod 71, the rotating shaft 72, the adjusting rod 73, the fastening nut 74, the locking bolt 75, the support cover plate 8, the suspension stud 9, the threaded post 91, the connecting post 92, the suspension block 93, the hook 94, the connecting rod 10, the screw guide 11, the metal zero length spring 12, the displacement measurement and control device 13, the strut 14, the counterweight body 15, the rotating control device 16, the rotating gear 17, the voice coil motor 18, the center bearing 19, the locking nut 20, the center post 21, the center rotating platform 22, the point laser displacement sensor 23, the adjusting stud 24, the connecting stud 241, the auxiliary stud 242, the rotating handle 243, the support post 244 and the data acquisition device 25.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 6, a rapid detection device for normal temperature creep of a metal zero-length spring in batches comprises a metal vacuum shell 1, a heat-insulating shell 4, a rotating mechanism 5, a locking device 7 and a metal zero-length spring 12;
the top of the metal vacuum shell 1 is movably connected with the top of the left end of the heat preservation shell cover 6 through a rotating mechanism 5, the metal vacuum shell 1 is fixed with the heat preservation shell cover 6 through a locking device 7, a heat preservation shell 4 is arranged in the metal vacuum shell 1, a polyurethane heat preservation layer 2 is arranged between the metal vacuum shell 1 and the heat preservation shell 4, the top of the heat preservation shell 4 is in clamping fit with the bottom of the supporting cover plate 8, two groups of screw guide rails 11 are arranged in the heat preservation shell 4, one ends of the screw guide rails 11 are connected with one ends of supporting rods 14, the other ends of the two supporting rods 14 are connected with the bottom of the supporting cover plate 8, the bottom of the supporting cover plate 8 is connected with the top of a suspension stud 9, the bottom of the suspension stud 9 is connected with the top of a metal zero-length spring 12, and the bottom of the metal zero-length spring 12 is connected with the top of a counterweight body 15;
the bottom of the inner wall of the metal vacuum shell 1 is connected with the bottom of a central support column 21, the top of the central support column 21 penetrates through the bottom of the heat-insulating shell 4 and extends into the heat-insulating shell 4, the top of the central support column 21 is connected with a central rotary table 22 through a central bearing 19, a lock nut 20 is arranged on the inner ring of the central bearing 19, a voice coil motor 18 is arranged on the side surface of the central support column 21 positioned in the heat-insulating shell 4, the output end of the voice coil motor 18 is connected with the central rotary table 22, the top of the central rotary table 22 is connected with the bottom of a point laser displacement sensor 23, and the point laser displacement sensor 23 corresponds to the position of a counterweight body 15;
the device comprises a metal vacuum shell 1, a temperature control device 3, a data acquisition device 25, a displacement measurement and control device 13, a rotation control device 16, an adjusting stud 24 and a control bolt, wherein the temperature control device 3 is arranged in the middle of the left side of the metal vacuum shell 1, the data acquisition device 25 is arranged below the temperature control device 3, the displacement measurement and control device 13 is arranged in the middle of the right side of the metal vacuum shell 1, the rotation control device 16 is arranged below the displacement measurement and control device 13, and the adjusting stud 24 is arranged at the bottom of the metal vacuum shell 1;
the displacement measurement and control device 13 is in signal connection with the screw guide rail 11, the rotation control device 16 is in signal connection with the voice coil motor 18, and the data acquisition device 25 is in signal connection with the point laser displacement sensor 23.
The locking device 7 comprises a fixing rod 71, an adjusting rod 73 and a locking bolt 75, wherein the bottom of the fixing rod 71 is connected with the top of the heat preservation shell cover 6, the top of the fixing rod 71 is connected with one end of the adjusting rod 73 through a rotating shaft 72, the other end of the adjusting rod 73 is movably connected with the outer side of a fastening nut 74, the locking bolt 75 is connected with an inner ring of the fastening nut 74 in a threaded mode, and the top of the locking bolt 75 is abutted to the metal vacuum shell 1.
The inner wall side face of the metal vacuum shell 1 is provided with a connecting rod 10, and one end, far away from the inner wall of the metal vacuum shell 1, of the connecting rod 10 penetrates through the heat-insulating shell 4 and extends to the inside of the heat-insulating shell 4 to be connected with a screw guide rail 11.
The number of the connecting rods 10 is four, two connecting rods 10 are in a group, and the two groups of connecting rods 10 are respectively positioned at the left side and the right side of the heat preservation shell 4 and are connected with the screw guide rail 11.
The number of the suspension studs 9 is eight, and the eight suspension studs 9 are uniformly and circumferentially arranged by taking the circle center of the supporting cover plate 8 as the center.
The suspension stud 9 comprises a threaded column 91, a connecting column 92, a suspension block 93 and a hook 94, wherein the top of the threaded column 91 is connected with the bottom of the support cover plate 8, the bottom of the threaded column 91 is connected with the top of the connecting column 92, the bottom of the connecting column 92 is connected with the top of the suspension block 93, the bottom of the suspension block 93 is connected with the top of the hook 94, and the bottom of the hook 94 is connected with the top of the metal zero-length spring 12.
The rotating mechanism 5 comprises an upper rotating rod 51, a rotating bolt 52 and a lower rotating rod 53, one end of the upper rotating rod 51 is connected with the top of the heat-preserving shell cover 6, one end of the lower rotating rod 53 is connected with the left side of the metal vacuum shell 1, the other end of the upper rotating rod 51 is connected with the other end of the lower rotating rod 53 through the rotating bolt 52, and a locking nut 54 is arranged on the side face of the rotating bolt 52.
The bottom of the central turntable 22 is provided with a rotating gear 17, and the external teeth of the rotating gear 17 are meshed with gears on the voice coil motor 18.
The number of the adjusting studs 24 is three, and the three adjusting studs 24 are arranged at the bottom of the metal vacuum shell 1 in an equal triangle shape.
The adjusting stud 24 comprises a connecting stud 241, a secondary stud 242, a rotating handle 243 and a supporting column 244, wherein the top of the connecting stud 241 is fixedly connected with the bottom of the metal vacuum shell 1, the bottom of the connecting stud 241 is connected with the top of the secondary stud 242, the outer side of the secondary stud 242 is in threaded connection with the inner side of the rotating handle 243, and the bottom of the rotating handle 243 is connected with the top of the supporting column 244.
Example 1:
the device for quickly detecting the normal-temperature creep of the metal zero-length springs in batches comprises a metal vacuum shell 1, a heat-preserving shell 4, a rotating mechanism 5, a locking device 7 and the metal zero-length springs 12;
the top of the metal vacuum shell 1 is movably connected with the top of the left end of the heat preservation shell cover 6 through a rotating mechanism 5, the metal vacuum shell 1 is fixed with the heat preservation shell cover 6 through a locking device 7, a heat preservation shell 4 is arranged in the metal vacuum shell 1, a polyurethane heat preservation layer 2 is arranged between the metal vacuum shell 1 and the heat preservation shell 4, the top of the heat preservation shell 4 is in clamping fit with the bottom of the supporting cover plate 8, two groups of screw guide rails 11 are arranged in the heat preservation shell 4, one ends of the screw guide rails 11 are connected with one ends of supporting rods 14, the other ends of the two supporting rods 14 are connected with the bottom of the supporting cover plate 8, the bottom of the supporting cover plate 8 is connected with the top of a suspension stud 9, the bottom of the suspension stud 9 is connected with the top of a metal zero-length spring 12, and the bottom of the metal zero-length spring 12 is connected with the top of a counterweight body 15;
the bottom of the inner wall of the metal vacuum shell 1 is connected with the bottom of a central support column 21, the top of the central support column 21 penetrates through the bottom of the heat-insulating shell 4 and extends into the heat-insulating shell 4, the top of the central support column 21 is connected with a central rotary table 22 through a central bearing 19, a lock nut 20 is arranged on the inner ring of the central bearing 19, a voice coil motor 18 is arranged on the side surface of the central support column 21 positioned in the heat-insulating shell 4, the output end of the voice coil motor 18 is connected with the central rotary table 22, the top of the central rotary table 22 is connected with the bottom of a point laser displacement sensor 23, and the point laser displacement sensor 23 corresponds to the position of a counterweight body 15;
the device comprises a metal vacuum shell 1, a temperature control device 3, a data acquisition device 25, a displacement measurement and control device 13, a rotation control device 16, an adjusting stud 24 and a control bolt, wherein the temperature control device 3 is arranged in the middle of the left side of the metal vacuum shell 1, the data acquisition device 25 is arranged below the temperature control device 3, the displacement measurement and control device 13 is arranged in the middle of the right side of the metal vacuum shell 1, the rotation control device 16 is arranged below the displacement measurement and control device 13, and the adjusting stud 24 is arranged at the bottom of the metal vacuum shell 1;
the displacement measurement and control device 13 is in signal connection with the screw guide rail 11, the rotation control device 16 is in signal connection with the voice coil motor 18, and the data acquisition device 25 is in signal connection with the point laser displacement sensor 23.
The use method comprises the following steps of rotating an adjusting stud 24 to rise or fall according to the measurement requirement to adjust the measurement height of the metal vacuum shell 1, arranging the bottom of the adjusting stud 24 on a foundation pier after the adjustment is completed, sequentially hanging the metal zero-length springs 12 to be detected on the hanging stud 9, hanging a counterweight body 15 on the bottom of the metal zero-length springs 12, creeping the metal zero-length springs 12 along with the counterweight body, measuring the creep quantity of the metal zero-length springs 12 by a point laser displacement sensor 23 on a central turntable 22, feeding back the result to a displacement measurement and control device 13, starting a voice coil motor 18 to drive the point laser displacement sensor 23 on the central turntable 22 to rotate, sequentially detecting the metal zero-length springs 12, opening a locking device 7 under the action of a rotating mechanism 5, starting a screw guide rail 11 to drive a supporting rod 11 to move upwards, and then replacing the metal zero-length springs 12 to be detected in batches to be detected.
Example 2:
example 2 is substantially the same as example 1 except that:
the utility model provides a quick detection device in batches is creep at normal temperature to metal zero length spring, through slewing mechanism 5 swing joint between the top of metal vacuum housing 1 and the left end top of heat preservation cap 6, fixed through locking device 7 between metal vacuum housing 1 and the heat preservation cap 6, the inside of metal vacuum housing 1 is provided with heat preservation casing 4, metal vacuum housing 1 is made with the alloy that the toughness is excellent, is the hollow structure that has certain wall thickness, and the cavity evacuation is high, and whole shell can play the dual effect of adiabatic and support cavity to be of benefit to device miniaturization and portability, be provided with polyurethane heat preservation 2 between metal vacuum housing 1 and the heat preservation casing 4, the heat preservation cap comprises the alloy material that the coefficient of heat conductivity is little, the toughness is high, the top of heat preservation casing 4 and the bottom block cooperation of supporting apron 8.
Example 3:
example 3 is substantially the same as example 2 except that:
the utility model provides a quick detection device in batches is creeping at metal zero length spring normal atmospheric temperature, the inside of heat preservation casing 4 is provided with two sets of lead screw guide rail 11, and its initial position is close to bottom department below branch 14, is connected with the one end of branch 14 on the lead screw guide rail 11, and the other end of two branches 14 is connected with the bottom of supporting cover plate 8, and heat preservation casing 4 and supporting cover plate 8 material are the duralumin that the heat conductivity is good, and its external surface all pastes sheet heater strip, provides the heat source, is controlled and adjusts by temperature control device 3, the bottom of supporting cover plate 8 is connected with the top of suspension double-screw bolt 9, and the bottom of suspension double-screw bolt 9 is connected with the top of metal zero length spring 12, and the bottom of metal zero length spring 12 is connected with the top of counter weight 15, and the distance that the slider of lead screw guide rail 11 upwards march is slightly greater than the length that the metal spring hung, is convenient for quick change spring batch monitoring, and the vertical direction up-down motion of lead screw guide rail 11 is controlled by displacement measurement and control device 13.
Example 4:
example 4 is substantially the same as example 3 except that:
the utility model provides a metal zero length spring normal atmospheric temperature creep quick detection device in batches, the inner wall bottom of metal vacuum housing 1 is connected with the bottom of center pillar 21, the top of center pillar 21 runs through the bottom of heat preservation casing 4 and extends to the inside of heat preservation casing 4, the top of center pillar 21 is connected with central revolving stage 22 through center bearing 19, the inner ring of center bearing 19 is provided with lock nut 20, the side-mounting that center pillar 21 is located inside heat preservation casing 4 has voice coil motor 18, voice coil motor 18's output is connected with central revolving stage 22, the top of central revolving stage 22 is connected with the bottom of some laser displacement sensor 23, some laser displacement sensor 23 rotate the time interval of angle for 5-10s, namely realize the displacement monitoring of a spring every 5-10s, metal zero length spring 12 gives No. 1 to No. 8 clockwise in proper order from the left, the detected displacement is the reflection glass which is inlaid from the laser emission position of the point laser displacement sensor 23 to the lower flat end surface of the suspended counterweight body, the precision of the displacement sensor can reach 1 micron, the continuous accurate measurement and real-time monitoring analysis of less than 5 microns can be realized, the point laser displacement sensor 23 corresponds to the position of the counterweight body 15, the counterweight body 15 is formed by fine grinding tin bronze, the height is 30-45mm, the diameter is determined according to the requirement of a measuring spring, the bottom of the counterweight body 15 is inlaid with the reflection glass, the high-precision displacement detection of the point laser displacement sensor under the counter weight body is convenient, the metal zero-length spring 12 is suspended on the counterweight body 15 or is acted by other external force, the displacement is generated as a result of deformation of the spring wire, the deformation is in an elastic range at the beginning, but as time goes by, the elastic deformation is partially and gradually converted into plastic deformation, so that permanent deformation is generated, the permanent deformation is also the root cause of creep deformation of the metal springs, the diameter of the central turntable 22 is equal to the diameter of a circle where the 8 metal zero-length springs 12 are projected, and along with the fact that the rotation angle of the central turntable 22 is equal to the equipartition angle of the metal zero-length springs 12, the sequential rapid and accurate creep detection of the metal zero-length springs 12 can be realized.
Example 5:
example 5 is substantially the same as example 4 except that:
the utility model provides a metal zero length spring normal atmospheric temperature creep is quick detection device in batches, when the time interval of point laser displacement sensor 23 rotation angle is 5s, namely realize the displacement monitoring of a spring every 5s, metal zero length spring 12 is given No. 1 to 8 from the left side clockwise in proper order, the displacement that detects is the reflection glass that point laser displacement sensor 23 laser emission position to hanging weight body lower flat end inlay, the precision of displacement sensor can reach 1 micron, can realize the continuous accurate measurement and the real-time supervision analysis of 5 microns extremely below, point laser displacement sensor 23 is corresponding with weight body 15's position, weight body 15 is by tin bronze finish grinding forms, highly is 30mm, and weight body 15 bottom all inlays and has reflection glass, the high accuracy displacement detection of point laser displacement sensor to it under the convenience.
Example 6:
example 6 is substantially the same as example 5 except that:
the utility model provides a quick detection device in batches is creep at normal temperature to metal zero length spring, temperature control device 3 is installed to the left side middle section of metal vacuum housing 1, data acquisition device 25 is installed to the left side of metal vacuum housing 1 below that is located temperature control device 3, can realize the change in length to batch serial number metal zero length spring 12 because of creep relaxation brings the spring along with time, namely the displacement that point laser displacement sensor 23 measured in succession at intervals changes, displacement measurement and control device 13 is installed in the right side middle section of metal vacuum housing 1, rotation control device 16 is installed to the right side of metal vacuum housing 1 below that is located displacement measurement and control device 13, the bottom of metal vacuum housing 1 is provided with adjusting stud 24.
Example 7:
example 7 is substantially the same as example 6 except that:
the utility model provides a quick detection device in batches of metal zero length spring normal atmospheric temperature creep, locking device 7 includes dead lever 71, regulation pole 73 and locking bolt 75, the bottom of dead lever 71 is connected with the top of heat preservation cap 6, the top of dead lever 71 is connected with one end of regulation pole 73 through pivot 72, the other end of regulation pole 73 is with the outside swing joint of fastening nut 74, the inner ring threaded connection of fastening nut 74 has locking bolt 75, the top of locking bolt 75 and metal vacuum shell 1 butt, rotate locking bolt 75 and metal vacuum shell 1 butt are fixed during the fixed; the rotating mechanism 5 comprises an upper rotating rod 51, a rotating bolt 52 and a lower rotating rod 53, one end of the upper rotating rod 51 is connected with the top of the heat-preserving shell cover 6, one end of the lower rotating rod 53 is connected with the left side of the metal vacuum shell 1, the other end of the upper rotating rod 51 is connected with the other end of the lower rotating rod 53 through the rotating bolt 52, a locking nut 54 is arranged on the side face of the rotating bolt 52, when the metal spring batch measurement is needed to be replaced according to scientific research, the locking device 7 can be loosened, the heat-preserving shell cover 4 and the heat-preserving layer of the shell cover are opened to 120 degrees through the rotating structure 5, and the lifting and replacement of the batch spring can be realized rapidly.
Example 8:
example 8 is substantially the same as example 7 except that:
the utility model provides a quick detection device in batches of metal zero length spring normal atmospheric temperature creep, the inner wall side face of metal vacuum housing 1 is installed and is connected connecting rod 10, and connecting rod 10 is kept away from metal vacuum housing 1 inner wall one end and runs through heat preservation casing 4 and extend to heat preservation casing 4 inside and be connected with lead screw guide rail 11; the number of the connecting rods 10 is four, two connecting rods 10 are in a group, and the two groups of connecting rods 10 are respectively positioned at the left side and the right side of the heat preservation shell 4 and are connected with the screw guide rail 11; the number of the suspension studs 9 is eight, and the eight suspension studs 9 are uniformly and circumferentially arranged by taking the circle center of the support cover plate 8 as the center; the suspension stud 9 comprises a threaded column 91, a connecting column 92, a suspension block 93 and a hook 94, wherein the top of the threaded column 91 is connected with the bottom of the support cover plate 8, the bottom of the threaded column 91 is connected with the top of the connecting column 92, the bottom of the connecting column 92 is connected with the top of the suspension block 93, the bottom of the suspension block 93 is connected with the top of the hook 94, and the bottom of the hook 94 is connected with the top of the metal zero-length spring 12; the bottom of the central turntable 22 is provided with a rotary gear 17, and external teeth of the rotary gear 17 are meshed with gears on the voice coil motor 18 to drive the central turntable 22 to realize equiangular rotation; the number of the adjusting studs 24 is three, and the three adjusting studs 24 are arranged at the bottom of the metal vacuum shell 1 in an equilateral triangle shape; the adjusting stud 24 comprises a connecting stud 241, a secondary stud 242, a rotating handle 243 and a supporting column 244, wherein the top of the connecting stud 241 is fixedly connected with the bottom of the metal vacuum shell 1, the bottom of the connecting stud 241 is connected with the top of the secondary stud 242, the outer side of the secondary stud 242 is in threaded connection with the inner side of the rotating handle 243, the bottom of the rotating handle 243 is connected with the top of the supporting column 244, the supporting column 244 is placed on a stable foundation pier for testing, so that the vibration of the environment is minimized, and the measuring error is reduced.
Example 9:
example 9 is substantially the same as example 8 except that:
a metal zero-length spring normal-temperature creep batch rapid detection device is characterized in that a temperature control module is used for keeping the temperature constant at 45 degrees, the precision is 0.01 degree, and temperature error analysis of the zero-length spring shows that the magnitude of the spring stiffness influenced by temperature isThe resulting gravity measurement error is approximately: (/>) mGAL, the deformation of the metal zero length spring caused by temperature change is more than 1 micron and is larger than the normal temperature creep value of the metal spring, so that the temperature control precision of the invention reaches 1% and the measurement error caused by the ambient temperature can be avoided.
The above description is merely of preferred embodiments of the present invention, and the scope of the present invention is not limited to the above embodiments, but all equivalent modifications or variations according to the present disclosure will be within the scope of the claims.
Claims (8)
1. The device for quickly detecting the normal-temperature creep of the metal zero-length springs in batches is characterized by comprising a metal vacuum shell (1), a heat-insulating shell (4), a rotating mechanism (5), a locking device (7) and the metal zero-length springs (12);
the top of the metal vacuum shell (1) is movably connected with the left end top of the heat preservation shell cover (6) through a rotating mechanism (5), the metal vacuum shell (1) is fixed with the heat preservation shell cover (6) through a locking device (7), a heat preservation shell (4) is arranged in the metal vacuum shell (1), a polyurethane heat preservation layer (2) is arranged between the metal vacuum shell (1) and the heat preservation shell (4), the top of the heat preservation shell (4) is matched with the bottom of the support cover plate (8) in a clamping manner, two groups of screw guide rails (11) are arranged in the heat preservation shell (4), one ends of the screw guide rails (11) are connected with one ends of the support rods (14), the other ends of the two support rods (14) are connected with the bottom of the support cover plate (8), the bottom of the support cover plate (8) is connected with the top of the suspension stud (9), the bottom of the suspension stud (9) is connected with the top of the metal zero long spring (12), and the bottom of the metal zero long spring (12) is connected with the top of the counterweight body (15);
the bottom of the inner wall of the metal vacuum shell (1) is connected with the bottom of a central support column (21), the top of the central support column (21) penetrates through the bottom of the heat insulation shell (4) and extends to the inside of the heat insulation shell (4), the top of the central support column (21) is connected with a central rotary table (22) through a central bearing (19), a lock nut (20) is arranged on the inner ring of the central bearing (19), a voice coil motor (18) is arranged on the side surface of the central support column (21) positioned inside the heat insulation shell (4), the output end of the voice coil motor (18) is connected with the central rotary table (22), the top of the central rotary table (22) is connected with the bottom of a point laser displacement sensor (23), and the point laser displacement sensor (23) corresponds to the position of a counterweight body (15);
the device comprises a metal vacuum shell (1), a temperature control device (3) is arranged in the left middle section of the metal vacuum shell (1), a data acquisition device (25) is arranged below the temperature control device (3) on the left side of the metal vacuum shell (1), a displacement measurement and control device (13) is arranged in the right middle section of the metal vacuum shell (1), a rotation control device (16) is arranged below the displacement measurement and control device (13) on the right side of the metal vacuum shell (1), and an adjusting stud (24) is arranged at the bottom of the metal vacuum shell (1);
the displacement measurement and control device (13) is in signal connection with the screw guide rail (11), the rotation control device (16) is in signal connection with the voice coil motor (18), and the data acquisition device (25) is in signal connection with the point laser displacement sensor (23);
the inner wall side face of the metal vacuum shell (1) is provided with a connecting rod (10), and one end, far away from the inner wall of the metal vacuum shell (1), of the connecting rod (10) penetrates through the heat insulation shell (4) and extends to the inside of the heat insulation shell (4) to be connected with the screw guide rail (11).
The number of the connecting rods (10) is four, two connecting rods (10) are in a group, and the two groups of connecting rods (10) are respectively positioned at the left side and the right side of the heat preservation shell (4) and connected with the screw rod guide rail (11);
the adjusting stud (24) comprises a connecting stud (241), an auxiliary stud (242), a rotating handle (243) and a supporting column (244), wherein the top of the connecting stud (241) is fixedly connected with the bottom of the metal vacuum shell (1), the bottom of the connecting stud (241) is connected with the top of the auxiliary stud (242), the outer side of the auxiliary stud (242) is in threaded connection with the inner side of the rotating handle (243), and the bottom of the rotating handle (243) is connected with the top of the supporting column (244).
2. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1, wherein the device is characterized in that: locking device (7) are including dead lever (71), regulation pole (73) and locking bolt (75), the bottom of dead lever (71) is connected with the top of heat preservation cap (6), and the top of dead lever (71) is through pivot (72) and the one end swing joint of regulation pole (73), and the other end of regulation pole (73) is connected with the outside of fastening nut (74), and the inner ring threaded connection of fastening nut (74) has locking bolt (75), the top and the metal vacuum shell (1) butt of locking bolt (75).
3. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1, wherein the device is characterized in that: the number of the suspension studs (9) is eight, and the eight suspension studs (9) are uniformly and circumferentially arranged by taking the center of a circle of the support cover plate (8) as the center.
4. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1 or 3, which is characterized in that: the suspension stud (9) comprises a threaded column (91), a connecting column (92), a suspension block (93) and a hook (94), wherein the top of the threaded column (91) is connected with the bottom of the support cover plate (8), the bottom of the threaded column (91) is connected with the top of the connecting column (92), the bottom of the connecting column (92) is connected with the top of the suspension block (93), the bottom of the suspension block (93) is connected with the top of the hook (94), and the bottom of the hook (94) is connected with the top of the metal zero-length spring (12).
5. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1, wherein the device is characterized in that: the rotating mechanism (5) comprises an upper rotating rod (51), a rotating bolt (52) and a lower rotating rod (53), one end of the upper rotating rod (51) is connected with the top of the heat-preserving shell cover (6), one end of the lower rotating rod (53) is connected with the left side of the metal vacuum shell (1), the other end of the upper rotating rod (51) is connected with the other end of the lower rotating rod (53) through the rotating bolt (52), and a locking nut (54) is arranged on the side face of the rotating bolt (52).
6. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1, wherein the device is characterized in that: the bottom of the central turntable (22) is provided with a rotating gear (17), and external teeth of the rotating gear (17) are meshed with gears on the voice coil motor (18).
7. The device for rapidly detecting the creep deformation of the metal zero-length spring at normal temperature in batches according to claim 1, wherein the device is characterized in that: the number of the adjusting studs (24) is three, and the three adjusting studs (24) are arranged at the bottom of the metal vacuum shell (1) in an equal triangle shape.
8. The application method of the metal zero-length spring normal-temperature creep batch rapid detection device according to claim 1, which is characterized in that: the method comprises the steps of rotating an adjusting stud (24) according to measurement requirements to rise or fall to adjust the measurement height of a metal vacuum shell (1), arranging the bottom of the adjusting stud (24) on a foundation pier after adjustment is completed, sequentially hanging a metal zero-length spring (12) to be detected on a hanging stud (9), hanging a counterweight body (15) on the bottom of the metal zero-length spring (12), creeping the metal zero-length spring (12) along with the counterweight body, feeding back the result to a displacement measurement and control device (13) by a point laser displacement sensor (23) on a central turntable (22), then starting a voice coil motor (18) to drive the point laser displacement sensor (23) on the central turntable (22) to rotate, sequentially detecting a plurality of metal zero-length springs (12), opening a locking device (7) under the action of a rotating mechanism (5), starting a screw guide rail (11) to drive a supporting rod (14) to move upwards, and accordingly lifting a heat-preserving shell cover (6) to support the metal zero-length springs (12) to be detected, and detecting the metal zero-length springs (12) to be detected in batches immediately.
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