CN115046843A - Metal zero-length spring normal-temperature creep batch rapid detection device - Google Patents
Metal zero-length spring normal-temperature creep batch rapid detection device Download PDFInfo
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- CN115046843A CN115046843A CN202210543340.3A CN202210543340A CN115046843A CN 115046843 A CN115046843 A CN 115046843A CN 202210543340 A CN202210543340 A CN 202210543340A CN 115046843 A CN115046843 A CN 115046843A
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- G—PHYSICS
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- 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
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Abstract
A metal zero-length spring normal-temperature creep batch rapid detection device comprises a metal vacuum shell, a heat preservation shell, a rotating mechanism, a locking device and a metal zero-length spring; the top of the metal vacuum shell is movably connected with the top of the left end of the heat-insulation shell cover through a rotating mechanism, the metal vacuum shell and the heat-insulation shell cover are fixed through a locking device, the heat-insulation shell is arranged inside the metal vacuum shell, and a polyurethane heat-insulation layer is arranged between the metal vacuum shell and the heat-insulation shell. The whole shell can play double roles of heat insulation and cavity supporting, the miniaturization and the portability of the device are facilitated, meanwhile, the heat insulation shell and the temperature control device are combined to provide a heat source for the metal vacuum shell, the temperature of the device in the detection process is kept constant, the high-precision exquisite heat insulation structure is achieved, and the influence of the environment temperature change on the creep measurement precision is reduced.
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 normal-temperature creep batch rapid detection device for the metal zero-length springs.
Background
The relaxation and creep of the metal zero-length spring are one of the fatal weak points of the spring. The zero drift is reflected on the sensor, and for a gravimeter, the grid is lost. 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 the high-precision gravity instrument. Particularly, a newly developed metal zero-length spring has large creep deformation and drift, is difficult to put into use in a short time, can meet the use index requirement after natural aging for years, and the numerical value and the rule of the normal-temperature creep drift of the precise metal spring are difficult to realize continuous accurate measurement and real-time monitoring analysis of the numerical value and the rule of the normal-temperature creep drift of the metal spring below 5 micrometers by a common optical microscopy means.
The metal zero-length spring is suspended from a counterweight or is subjected to other external force, and displacement is generated. This displacement is a result of the deformation of the spring wire. The deformation starts in the elastic range, but over time, the elastic deformation is partly converted gradually into plastic deformation, resulting in a permanent deformation, which is called creep, if it occurs under constant force. The creep mechanism of the metallic zero-length spring is not completely theoretically explained at present. It is believed that this is due to plastic deformation of the viscous flow of material under load and temperature, and the release of internal stresses may still be a major cause for high precision springs.
The information disclosed in this background section is only for enhancement of understanding of the general background of the patent application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to solve the problem that external environmental factors influence the measurement result in the prior art, and provides a metal zero-length spring normal-temperature creep batch rapid detection device with accurate measurement result.
In order to achieve the above purpose, the technical solution of the invention is as follows: a metal zero-length spring normal-temperature creep batch rapid detection device comprises a metal vacuum shell, a heat preservation shell, a rotating mechanism, a locking device and a metal zero-length spring;
the top of the metal vacuum shell is movably connected with the top of the left end of the heat-insulation shell cover through a rotating mechanism, the metal vacuum shell and the heat-insulation shell cover are fixed through a locking device, a heat-insulation shell is arranged inside the metal vacuum shell, a polyurethane heat-insulation layer is arranged between the metal vacuum shell and the heat-insulation shell, the top of the heat-insulation shell is in clamping fit with the bottom of the supporting cover plate, two groups of lead screw guide rails are arranged inside the heat-insulation shell, the lead screw 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 supporting cover plate, the bottom of the supporting cover plate is connected with the top of the suspension stud, the bottom of the suspension stud is connected with the top of the 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 the central support column, the top of the central support column penetrates through the bottom of the heat preservation shell and extends into the heat preservation shell, the top of the central support column is connected with the central rotary table through a central bearing, a locking nut is arranged on an inner ring of the central bearing, a voice coil motor is installed on the side face, located inside the heat preservation shell, of the central support column, 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 the counterweight body;
a temperature control device is installed in the middle section of the left side of the metal vacuum shell, a data acquisition device is installed below the temperature control device on the left side of the metal vacuum shell, a displacement measurement and control device is installed in the middle section of the right side of the metal vacuum shell, a rotation control device is installed below the displacement measurement and control device on the right side of the metal vacuum shell, and an adjusting stud is arranged at the bottom of the metal vacuum shell;
the displacement measurement and control device is in signal connection with the lead screw 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, the bottom of the fixing rod is connected with the top of the heat-insulation 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 locking bolt is connected to the inner ring of the fastening nut through threads, and the top of the locking bolt is abutted to the metal vacuum shell.
And a connecting rod is arranged on the side surface of the inner wall of the metal vacuum shell, and one end of the connecting rod, which is 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 screw rod guide rail.
The number of the connecting rods is four, the two connecting rods are in one group, and the two groups of connecting rods are respectively positioned at the left side and the right side of the heat-insulating shell and are connected with the screw rod guide rails.
The number of the suspension studs is eight, and the eight suspension studs are uniformly arranged in a surrounding mode by taking the circle center of the supporting cover plate as the center.
The hanging stud comprises a threaded column, a connecting column, a hanging block and a hook, the top of the threaded column is connected with the bottom of the supporting 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 hanging block, the bottom of the hanging 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-insulation 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.
And a rotating gear is arranged at the bottom of the central turntable, and external teeth of the rotating gear are meshed with a 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 equi-triangular shape.
The adjusting stud comprises a connecting stud, an auxiliary stud, a rotating handle and a supporting column, 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. in the invention, the top of a metal vacuum shell and the bottom of the right end of a heat-insulating shell cover are movably connected through a rotating mechanism, the metal vacuum shell and the heat-preservation shell cover are fixed through a locking device, the heat-preservation shell is arranged in the metal vacuum shell, a polyurethane heat-insulating layer is arranged between the metal vacuum shell and the heat-insulating 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 double roles of heat insulation and cavity supporting, and the device is beneficial to miniaturization and portability, meanwhile, a heat source can be provided in the metal vacuum shell by combining the heat-insulating shell and the temperature control device, the temperature of the device in the detection process is kept constant, the high-precision exquisite heat-insulating structure is achieved, and the influence of environment temperature change on creep measurement precision is reduced. Therefore, the invention has constant temperature and better temperature control effect.
2. In the invention, a metal zero-length spring normal-temperature creep batch rapid detection device, a voice coil motor is arranged on the side surface of a central support positioned in a heat-insulating shell, the output end of the voice coil motor is connected with a central rotary table, the top of the central rotary table is connected with the bottom of a point laser displacement sensor, the point laser displacement sensor corresponds to the position of a counterweight body, a metal zero-length spring is hung on the counterweight body or generates displacement when being acted by other external forces, the voice coil motor can drive the point laser displacement sensor to rotate, the lead screw guide rail can realize the rapid replacement of batch metal zero-length springs, the rotating angle of the central turntable every time is equal to the average angle of the metal zero-length springs, the method can realize rapid, batch and efficient automatic high-precision monitoring of the nano-scale creep of the metal spring, and lays an important technical cushion for deeply analyzing the normal-temperature creep law of the high-precision metal zero-length spring. Therefore, the invention is convenient to detect and can detect a plurality of metal zero-length springs respectively.
3. In the invention, a temperature control device is arranged in the middle section of the left side of a metal vacuum shell 1, a data acquisition device is arranged below the temperature control device on the left side of the metal vacuum shell, the length change of springs caused by creep relaxation of batch numbered metal zero-length springs along with time can be realized, namely the displacement change measured by a point laser displacement sensor at continuous intervals, a displacement measurement and control device is arranged in the middle section of the right side of the metal vacuum shell, a rotation control device is arranged below the displacement measurement and control device on the right side of the metal vacuum shell, factors related to each measurement result are monitored, data are acquired, the influence of external environmental 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 view of the distribution of suspension studs according to the invention.
Fig. 3 is a schematic view of the construction of the suspension stud according to the invention.
Fig. 4 is a schematic view of the locking device of the present invention.
Fig. 5 is a schematic structural view of the rotating mechanism of the present invention.
FIG. 6 is a schematic view of the adjusting stud of the present invention.
In the figure: the device comprises a metal vacuum shell 1, a polyurethane heat-insulating layer 2, a temperature control device 3, a heat-insulating shell 4, a rotating mechanism 5, an upper rotating rod 51, a rotating bolt 52, a lower rotating rod 53, a locking nut 54, a heat-insulating shell cover 6, a locking device 7, a fixed rod 71, a rotating shaft 72, an adjusting rod 73, a fastening nut 74, a locking bolt 75, a supporting cover plate 8, a hanging stud 9, a threaded column 91, a connecting column 92, a hanging block 93, a hook 94, a connecting rod 10, a lead screw guide rail 11, a metal zero-length spring 12, a displacement measurement and control device 13, a supporting rod 14, a counterweight body 15, a rotation control device 16, a rotating gear 17, a voice coil motor 18, a central bearing 19, a locking nut 20, a central supporting column 21, a central turntable 22, a point laser displacement sensor 23, an adjusting stud 24, a connecting stud 241, a secondary stud 242, a rotating handle 243, a supporting column 244 and a data acquisition device 25.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description of the invention.
Referring to fig. 1 to 6, the device for rapidly detecting the normal-temperature creep batch of the metal zero-length spring 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-insulation shell cover 6 through a rotating mechanism 5, the metal vacuum shell 1 and the heat-insulation shell cover 6 are fixed through a locking device 7, a heat-insulation shell 4 is arranged inside the metal vacuum shell 1, a polyurethane heat-insulation layer 2 is arranged between the metal vacuum shell 1 and the heat-insulation shell 4, the top of the heat-insulation shell 4 is in clamping fit with the bottom of a support cover plate 8, two groups of lead screw guide rails 11 are arranged inside the heat-insulation shell 4, the lead 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 support cover plate 8, the bottom of the support 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 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 preservation shell 4 and extends into the heat preservation shell 4, the top of the central support column 21 is connected with a central rotary table 22 through a central bearing 19, a locking nut 20 is arranged on the inner ring of the central bearing 19, a voice coil motor 18 is installed on the side surface, located inside the heat preservation shell 4, of the central support column 21, 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 the counterweight body 15;
the temperature control device 3 is installed in the middle section of the left side of the metal vacuum shell 1, the data acquisition device 25 is installed below the temperature control device 3 on the left side of the metal vacuum shell 1, the displacement measurement and control device 13 is installed in the middle section of the right side of the metal vacuum shell 1, the rotation control device 16 is installed below the displacement measurement and control device 13 on the right side of the metal vacuum shell 1, 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 lead 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, the bottom of the fixing rod 71 is connected with the top of the heat-insulation 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 inner ring of the fastening nut 74 is connected with the locking bolt 75 in a threaded mode, and the top of the locking bolt 75 is abutted to the metal vacuum shell 1.
And a connecting rod 10 is arranged on the side surface of the inner wall of the metal vacuum shell 1, 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 into the heat-insulating shell 4 to be connected with the screw rod guide rail 11.
The number of the connecting rods 10 is four, two connecting rods 10 form a group, and two groups of connecting rods 10 are respectively positioned at the left side and the right side of the heat-insulating shell 4 and connected with the screw rod guide rail 11.
The number of the suspension studs 9 is eight, and the eight suspension studs 9 are uniformly arranged around the center of the circle of the supporting cover plate 8.
The suspension stud 9 comprises a threaded column 91, a connecting column 92, a suspension block 93 and a hook 94, 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-insulating 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 a gear 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 equi-triangular shape.
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.
Example 1:
a metal zero-length spring normal-temperature creep batch rapid detection device comprises a metal vacuum shell 1, a heat preservation 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 insulation shell cover 6 through a rotating mechanism 5, the metal vacuum shell 1 and the heat insulation shell cover 6 are fixed through a locking device 7, a heat insulation shell 4 is arranged inside the metal vacuum shell 1, a polyurethane heat insulation layer 2 is arranged between the metal vacuum shell 1 and the heat insulation shell 4, the top of the heat insulation shell 4 is in clamping fit with the bottom of the support cover plate 8, two groups of lead screw guide rails 11 are arranged inside the heat insulation shell 4, one ends of the support rods 14 are connected to the lead screw guide rails 11, 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-length spring 12, and the bottom of the metal zero-length spring 12 is connected with the top of the counterweight 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 preservation shell 4 and extends into the heat preservation shell 4, the top of the central support column 21 is connected with a central rotary table 22 through a central bearing 19, a locking nut 20 is arranged on the inner ring of the central bearing 19, a voice coil motor 18 is installed on the side surface, located inside the heat preservation shell 4, of the central support column 21, 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 the counterweight body 15;
the temperature control device 3 is installed in the middle section of the left side of the metal vacuum shell 1, the data acquisition device 25 is installed on the left side of the metal vacuum shell 1 below the temperature control device 3, the displacement measurement and control device 13 is installed in the middle section of the right side of the metal vacuum shell 1, the rotation control device 16 is installed on the right side of the metal vacuum shell 1 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 lead 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 using method comprises the following steps of rotating an adjusting stud 24 to ascend or descend according to measurement requirements to adjust the measurement height of the metal vacuum shell 1, after the adjustment is completed, arranging the bottom of the adjusting stud 24 on a base pier, sequentially hanging a metal zero-length spring 12 to be detected on a suspension stud 9, hanging a counterweight body 15 on the bottom of the metal zero-length spring 12, enabling the metal zero-length spring 12 to creep along with the metal zero-length spring, measuring the creep deformation of the metal zero-length spring 12 by a point laser displacement sensor 23 on a central turntable 22, simultaneously feeding the result back 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 a plurality of metal zero-length springs 12, when the detection of other batches of metal zero-length springs 12 is needed, opening a locking device 7, and under the action of a rotating mechanism 5, and opening the heat-insulation shell cover 6, starting the screw rod guide rail 11 to drive the support rod 11 to move upwards, so that the support cover plate 8 is lifted, and replacing the metal zero-length springs 12 of the batch to be detected immediately for detection.
Example 2:
example 2 is substantially the same as example 1 except that:
the utility model provides a quick detection device in batches of zero long spring normal atmospheric temperature creep, through 5 swing joint of slewing mechanism between the top of metal vacuum enclosure 1 and the left end top of heat preservation cap 6, it is fixed through locking device 7 between metal vacuum enclosure 1 and the heat preservation cap 6, the inside of metal vacuum enclosure 1 is provided with heat preservation casing 4, and metal vacuum enclosure 1 is made with the excellent alloy of obdurability, is the hollow structure who has certain wall thickness, and the high vacuum is taken out to hollow portion, and whole shell can play adiabatic and support the dual function of cavity to be of value to device miniaturization and portability, be provided with polyurethane heat preservation 2 between metal vacuum enclosure 1 and the heat preservation casing 4, the heat preservation cap comprises the alloy material that coefficient is little, obdurability is high, the top of heat preservation casing 4 and the cooperation of the bottom block formula of supporting cover board 8.
Example 3:
example 3 is substantially the same as example 2, except that:
a metal zero-length spring normal temperature creep batch rapid detection device, two groups of lead screw guide rails 11 are arranged inside a heat preservation shell 4, the initial position is under the supporting rod 14 near the bottom, the lead screw guide rail 11 is connected with one end of the supporting rod 14, the other ends of the two supporting rods 14 are connected with the bottom of the supporting cover plate 8, the heat-insulating shell 4 and the supporting cover plate 8 are both made of duralumin with good heat conductivity, the outer surfaces of the support cover plates 8 are respectively pasted with a flaky heating wire to provide a heat source, the support cover plates are controlled and adjusted by a temperature control device 3, the bottoms of the support cover plates 8 are 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, the bottom of the metal zero-length spring 12 is connected with the top of a counterweight body 15, the upward traveling distance of a sliding block of a screw rod guide rail 11 is slightly larger than the suspension length of the metal spring, the rapid spring-changing batch monitoring is facilitated, and the vertical direction up-and-down movement of the screw rod guide rail 11 is controlled by a displacement measurement and control device 13.
Example 4:
example 4 is essentially the same as example 3, except that:
a metal zero-length spring normal-temperature creep batch rapid detection device is characterized in that the bottom of the inner wall of a 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 a heat preservation shell 4 and extends into the heat preservation shell 4, the top of the central support column 21 is connected with a central turntable 22 through a central bearing 19, a locking 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 preservation shell 4, the output end of the voice coil motor 18 is connected with the central turntable 22, the top of the central turntable 22 is connected with the bottom of a point laser displacement sensor 23, the time interval of one-time rotation angle of the point laser displacement sensor 23 is 5-10s, namely displacement monitoring of one spring is realized every 5-10s, and the metal zero-length spring 12 is sequentially provided with numbers from No. 1 to No. 8 from the left in a clockwise direction, the detected displacement is the reflective glass inlaid from the laser emitting position of the point laser displacement sensor 23 to the lower flat end face of the suspended counterweight body, the precision of the displacement sensor can reach 1 micron, the continuous accurate measurement and real-time monitoring analysis below 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 finely grinding tin bronze, the height is 30-45mm, the diameter is determined according to the requirement of a measuring spring, the reflective glass is inlaid at the bottom of the counterweight body 15, the high-precision displacement detection of the point laser displacement sensor right below the counterweight body is convenient, the metal zero-length spring 12 can generate displacement when being suspended on the counterweight body 15 or being subjected to other external forces, the displacement is the result of the deformation of a spring wire, the deformation is in the elastic range when the deformation starts, but the elastic deformation can be partially and gradually changed into plastic deformation along with the time, therefore, permanent deformation is generated, which is also the root cause of metal spring creep, the diameter of the central rotary table 22 is equal to the diameter of a circle where the projections of the 8 metal zero-length springs 12 are located, and the rotation angle of the central rotary table 22 at each time is also equal to the uniform angle of the metal zero-length springs 12, so that the sequential rapid and accurate creep detection of the plurality of metal zero-length springs 12 can be realized.
Example 5:
example 5 is essentially the same as example 4, except that:
the utility model provides a metal zero length spring normal atmospheric temperature creep batch short-term test device, the time interval of the rotatory angle of point laser displacement sensor 23 is when 5s, realize the displacement monitoring of a spring every 5s promptly, metal zero length spring 12 gives number 1 No. 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 inlayed to hang the flat terminal surface under the counter weight, the precision of displacement sensor can reach 1 micron, can realize 5 microns continuous accurate measurement and real-time supervision analysis extremely below, point laser displacement sensor 23 corresponds with the position of counter weight 15, counter weight 15 is formed by the tin bronze finish grinding, highly is 30mm, and counter weight 15 bottom all inlays and has reflection glass, be convenient for under to the high accuracy displacement detection of its point laser displacement sensor.
Example 6:
example 6 is substantially the same as example 5 except that:
the utility model provides a quick detection device in batches of metal zero-length spring normal atmospheric temperature creep, temperature control device 3 is installed in the left side middle section of metal vacuum casing 1, and data acquisition device 25 is installed to the below that the left side of metal vacuum casing 1 is located temperature control device 3, can realize that the length change of spring is brought along with time to batch serial number metal zero-length spring 12 because of the creep relaxation, also is the displacement change that some laser displacement sensor 23 continuous interval measured arrived, and displacement measurement and control device 13 is installed in the right side middle section of metal vacuum casing 1, and rotation control device 16 is installed to the below that the right side of metal vacuum casing 1 is located displacement measurement and control device 13, the bottom of metal vacuum casing 1 is provided with regulation double-screw bolt 24.
Example 7:
example 7 is substantially the same as example 6 except that:
a metal zero-length spring normal-temperature creep batch rapid detection device 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 a heat-insulation 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 inner ring of the fastening nut 74 is in threaded connection with the locking bolt 75, the top of the locking bolt 75 is abutted to a metal vacuum shell 1, and the locking bolt 75 is rotated to be abutted to the metal vacuum shell 1 for fixation; the slewing mechanism 5 includes last rotating rod 51, swivel bolt 52 and lower rotating rod 53, the one end of last rotating rod 51 is connected with the top of heat preservation cap 6, the one end of lower rotating rod 53 is connected with the left side of metal vacuum shell 1, the other end of last rotating rod 51 is connected with the other end of lower rotating rod 53 through swivel bolt 52, the side of swivel bolt 52 is provided with lock nut 54, when changing the batch measurement of metal spring according to scientific research needs, can loosen locking device 7, open heat preservation cap 4 and cap heat preservation to 120 degrees through rotating-structure 5, can realize the lift and the change of batch spring fast.
Example 8:
example 8 is essentially the same as example 7, except that:
a metal zero-length spring normal-temperature creep batch rapid detection device is characterized in that a connecting rod 10 is installed on the side face of the inner wall of a metal vacuum shell 1, and one end, far away from the inner wall of the metal vacuum shell 1, of the connecting rod 10 penetrates through a heat preservation shell 4 and extends into the heat preservation shell 4 to be connected with a lead screw guide rail 11; the number of the connecting rods 10 is four, two connecting rods 10 form a group, and two groups of connecting rods 10 are respectively positioned at the left side and the right side of the heat-insulating shell 4 and are connected with the screw rod guide rail 11; the number of the suspension studs 9 is eight, and the eight suspension studs 9 are uniformly arranged around the center of the circle of the supporting cover plate 8; the suspension stud 9 comprises a threaded column 91, a connecting column 92, a suspension block 93 and a hook 94, 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 rotating gear 17, and the outer teeth of the rotating gear 17 are meshed with a gear on the voice coil motor 18 to drive the central turntable 22 to realize equal-angle rotating motion; 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 equi-triangular shape; 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, the bottom of the rotating handle 243 is connected with the top of the supporting column 244, and the supporting column 244 is placed on a stable foundation pier for testing, so that the vibration of the environment is reduced to the minimum, and the measuring error is reduced.
Example 9:
example 9 is essentially the same as example 8 except that:
the utility model provides a metal zero length spring normal atmospheric temperature creep is quick detection device in batches, temperature control module with the temperature constant temperature at 45 degrees, the precision is at 0.01 degrees, the temperature error analysis of zero length spring shows that the magnitude of spring stiffness influenced by the temperature is for
The resulting gravity measurement error is approximately: (
) And mGal, namely the deformation of the metal zero-length spring caused by temperature change once exceeds 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 percent, and the measurement error introduced by the environment temperature can be avoided.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, but equivalent modifications or changes made by those skilled in the art according to the present disclosure should be included in the scope of the present invention as set forth in the appended claims.
Claims (10)
1. A metal zero-length spring normal-temperature creep batch rapid detection device is characterized by comprising a metal vacuum shell (1), a heat preservation shell (4), a rotating mechanism (5), a locking device (7) and a metal zero-length spring (12);
the metal vacuum shell is characterized in that the top of the metal vacuum shell (1) is movably connected with the top of the left end of a heat-insulating shell cover (6) through a rotating mechanism (5), the metal vacuum shell (1) and the heat-insulating shell cover (6) are fixed through a locking device (7), a heat-insulating shell (4) is arranged in the metal vacuum shell (1), a polyurethane heat-insulating layer (2) is arranged between the metal vacuum shell (1) and the heat-insulating shell (4), the top of the heat-insulating shell (4) is matched with the bottom of a supporting cover plate (8) in a clamping manner, two groups of lead screw guide rails (11) are arranged in the heat-insulating shell (4), the lead 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 hanging stud (9), and the bottom of the hanging stud (9) is connected with the top of a metal zero-length spring (12), the bottom of the metal zero-length 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 preservation shell (4) and extends into the heat preservation shell (4), the top of the central support column (21) is connected with a central rotary table (22) through a central bearing (19), a locking nut (20) is arranged on an inner ring of the central bearing (19), a voice coil motor (18) is installed on the side face, located inside the heat preservation shell (4), of the central support column (21), 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 the counterweight body (15);
a temperature control device (3) is installed in the middle section of the left side of the metal vacuum shell (1), a data acquisition device (25) is installed on the left side of the metal vacuum shell (1) and located below the temperature control device (3), a displacement measurement and control device (13) is installed in the middle section of the right side of the metal vacuum shell (1), a rotation control device (16) is installed on the right side of the metal vacuum shell (1) and located below the displacement measurement and control device (13), 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 lead 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).
2. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, is characterized in that: the locking device (7) comprises a fixing rod (71), an adjusting rod (73) and a locking bolt (75), the bottom of the fixing rod (71) is connected with the top of the heat-insulation shell cover (6), the top of the fixing rod (71) is movably connected with one end of the adjusting rod (73) through a rotating shaft (72), the other end of the adjusting rod (73) is connected with the outer side of a fastening nut (74), the inner ring of the fastening nut (74) is connected with the locking bolt (75) in a threaded mode, and the top of the locking bolt (75) is abutted to the metal vacuum shell (1).
3. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, is characterized in that: the connecting rod (10) is installed on the side face of the inner wall of the metal vacuum shell (1), one end, far away from the inner wall of the metal vacuum shell (1), of the connecting rod (10) penetrates through the heat preservation shell (4) and extends to the inside of the heat preservation shell (4) to be connected with the screw rod guide rail (11).
4. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 3, is characterized in that: the number of the connecting rods (10) is four, two connecting rods (10) form a group, and the two groups of connecting rods (10) are respectively positioned at the left side and the right side of the heat-insulating shell (4) and connected with the screw rod guide rail (11).
5. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, is characterized in that: the number of the suspension studs (9) is eight, and the eight suspension studs (9) are uniformly arranged in a surrounding manner by taking the circle center of the supporting cover plate (8) as the center.
6. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1 or 5, wherein: the suspension stud (9) comprises a threaded column (91), a connecting column (92), a suspension block (93) and a hook (94), 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).
7. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, 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-insulation 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).
8. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, 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 a gear on the voice coil motor (18).
9. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 1, 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 equi-triangular shape.
10. The device for rapidly detecting the metal zero-length spring in batch creep at normal temperature according to claim 9, is characterized in that: the adjusting stud (24) comprises a connecting stud (241), an auxiliary stud (242), a rotating handle (243) and a supporting column (244), 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).
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