CN110454531B - Spring with detection medium in center - Google Patents
Spring with detection medium in center Download PDFInfo
- Publication number
- CN110454531B CN110454531B CN201910623467.4A CN201910623467A CN110454531B CN 110454531 B CN110454531 B CN 110454531B CN 201910623467 A CN201910623467 A CN 201910623467A CN 110454531 B CN110454531 B CN 110454531B
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- China
- Prior art keywords
- spring
- insulating
- center
- spiral metal
- tensile stress
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/024—Covers or coatings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/042—Wound springs characterised by the cross-section of the wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0057—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to spring-shaped elements
Abstract
The invention discloses a spring with a detection medium in the center, which is a hollow spiral metal spring, wherein an insulating layer is arranged on the inner wall of a hollow hole of the hollow spiral metal spring, insulating plugs are arranged at two ends of the hollow hole of the hollow spiral metal spring, conductive liquid is filled in the hollow hole of the spiral metal spring, a conductive probe penetrating through the edge plug is inserted in the center of the edge plug, and the surface of the spiral metal spring and the conductive needle are respectively and electrically connected with a detection circuit. The spring with the detection medium in the center has the characteristics of reasonable structure, capability of conveniently detecting the spring performance in a use state at any time, capability of accurately finding the quality problem of the spring or the spring elasticity failure state in time and the like.
Description
Technical Field
The invention relates to the technical field of spring structure construction, in particular to a spring with a detection medium arranged in the center, which is particularly suitable for large-scale other rows used by heavy equipment.
Background
A spring is a mechanical part that works by elasticity. The part made of elastic material deforms under the action of external force and restores to the original shape after the external force is removed. Typically made of spring steel. The types of springs are complex and various, and mainly include spiral springs, volute springs, plate springs, special springs and the like according to the shapes.
At present when the production spring, the spring coefficient is mainly determined to control spring quality, and its spring coefficient of spring that different trades used all differs, to the detection mode of spring performance, generally adopts general application of force machinery, and supplementary length measuring tool detects the spring, and the defect that this kind of detection mode ubiquitous measurement accuracy is relatively poor, and measuring work efficiency is low, and the measured data accuracy is not high, can't satisfy the quality management and control's of enterprise's production needs.
Another device or tool for detecting the spring is convenient for detecting the performance of the spring in the spring production process or before the spring leaves a factory after the construction is finished. How to timely and accurately detect the performance or failure state of the spring in the using process is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a spring with a detection medium in the center, which has a simple structure and is convenient and quick to detect, and can timely and accurately find the quality problem of the spring or the elastic failure of the spring.
In order to achieve the purpose, the technical scheme of the invention is to design a spring with a detection medium in the center, wherein the spring is a hollow spiral metal spring, an insulating layer is arranged on the inner wall of a hollow hole of the hollow spiral metal spring, insulating plugs are arranged at two ends of the hollow hole of the hollow spiral metal spring, conductive liquid is filled in the hollow hole of the spiral metal spring, a conductive probe penetrating through the edge plug is inserted in the center of the edge plug, and the surface of the spiral metal spring and the conductive pin are respectively and electrically connected with a detection circuit.
When the spring material is over-stressed and over-fatigued and the material cracks, the conductive liquid in the hollow hole can permeate into the crack, the conductive liquid, the conductive probe and the metal spring material form a conductive loop at the moment, and the conductive loop can send out an alarm signal when being detected by a detection circuit to inform related personnel of replacing the spring.
In order to meet the requirements of heavy springs used by large-scale and heavy-duty mechanical equipment on the strength and the bearing capacity of the spring material, the preferable technical scheme is that the spiral metal spring is made of spring steel.
In order to ensure that the insulating layer is tightly adhered to the inner wall of the hollow hole, is not easy to fall off, is thin, and can be extremely cracked when the metal material cracks, a further preferable technical scheme is that the insulating layer is a plastic spraying layer or an insulating paint layer.
In order to ensure that the conductive liquid in the hollow hole cannot leak out and the plug is convenient to assemble and disassemble, the further preferable technical scheme is that the insulating plug is an insulating rubber plug or an insulating sealant.
In order to prevent the leakage of the conductive liquid, and simultaneously, the material with cracks can be temporarily bonded, and meanwhile, the problem that the conductive liquid fails due to the fact that the conductive liquid is frozen and can not flow in a low-temperature environment is solved.
In order to facilitate monitoring of the change of the spring elasticity and the situations of whether the spring has reduced elasticity or elastic failure and the like, the preferable technical scheme is that a groove is arranged on one side of the inner ring of the spiral ring on the surface of the spiral metal spring, the groove is parallel to the axis of the spring blank, the cross section of the groove is a C-shaped groove, a tensile stress resistance wire is embedded in the groove, and two ends of the tensile stress resistance wire are fixed with two ends of the spiral spring and are used for being electrically connected with a tensile stress detector.
The tensile stress resistance wire is firstly applied with a certain pretightening force at two ends of the compression spiral spring, and then the tensile stress resistance wire is fixed with two ends of the spiral spring. And the compression coil spring is compressed to a limit state to detect the resistance value of the tensile stress resistance wire, and then the compression coil spring is released to a free state to detect the resistance value of the tensile stress resistance wire again. When the resistance value of the pull-down stress resistance wire in the use state of the compression spiral spring is smaller than that in the compression limit state, or the resistance value of the pull-down stress resistance wire in the free state is smaller than that in the free state, the elasticity performance of the spring is reduced, if the resistance value is smaller than a set threshold value, the elasticity of the spring is failed, and if the resistance value is zero, the spring is possibly broken. If the detected resistance value is larger than the resistance value in the free state, the spring is not used correctly, deflection can occur and the using state of the spring can be distorted.
The stretched coil spring can be detected by the same detection method as that for the compression spring. Or applying a certain pretightening force to the tensile stress resistance wire at the two ends of the tensile spiral spring, and fixing the tensile stress resistance wire and the two ends of the spiral spring. And the tensile spiral spring is stretched to the use limit state to detect the resistance value of the tensile stress resistance wire, and then the tensile spiral spring is released to the free state to detect the resistance value of the tensile stress resistance wire again. When the resistance value of the tensile stress resistance wire of the tensile spiral spring in the use state is larger than that in the use limit state, or the resistance value of the tensile stress resistance wire in the free state is larger than that in the free state, the elasticity performance of the spring is reduced, if the resistance value is larger than a set threshold value, the elasticity of the spring is failed, and if the resistance value is zero, the spring is possibly broken. If the detected resistance value is smaller than the resistance value in the free state, the spring is not used correctly and can be compressed for use.
In order to avoid the tensile stress resistance wire from falling out of the C-shaped groove, the preferable technical scheme is that the groove is filled with insulating glue.
In order to avoid the conduction between the tensile stress resistance wire and the metal spring body to form a conductive loop and interfere the detection accuracy, a further preferred technical scheme is that an insulating sheath is arranged on the surface of the tensile stress resistance wire.
The spring is relatively complex in structure, so that the spring is only suitable for large, heavy and heavy-load mechanical equipment, and further, the spring is a special spring for the heavy equipment.
The spring structure can be suitable for a tension spring and can also be used for a compression spring, and further, the spring is a compression spring or a tension spring.
The invention has the advantages and beneficial effects that: the spring with the detection medium in the center has the characteristics of reasonable structure, capability of conveniently detecting the spring performance in a use state at any time, capability of accurately finding the quality problem of the spring or the spring elasticity failure state in time and the like.
Drawings
FIG. 1 is a schematic diagram of a spring with a detection medium centrally disposed therein according to the present invention;
FIG. 2 is a schematic cross-sectional view of a spring blank with a detection medium centrally disposed therein.
In the figure: 1. a spring; 2. a hollow bore; 3. an insulating layer; 4. a plug; 5. a conductive liquid; 6. a conductive probe; 7. a trench; 8. tensile stress resistance wire.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and 2, the invention is a spring with a detection medium in the center, the spring 1 is a hollow spiral metal spring, an insulating layer 3 is arranged on the inner wall of a hollow hole 2 of the hollow spiral metal spring, insulating plugs 4 are arranged at two ends of the hollow hole 2 of the hollow spiral metal spring, a conductive liquid 5 is filled in the hollow hole 2 of the spiral metal spring, a conductive probe 6 penetrating through the edge plug is inserted in the center of the edge plug 4, and the surface of the spiral metal spring and the conductive needle are respectively and electrically connected with a detection circuit.
When the spring material is over-stressed and over-fatigued and cracks appear in the material, the conductive liquid 5 in the hollow hole 2 permeates into the cracks, the conductive liquid 5, the conductive probe 6 and the metal spring material form a conductive loop at the moment, and the conductive loop can send out an alarm signal when being detected by a detection circuit to inform related personnel of replacing the spring.
In order to meet the requirements of the heavy springs used by large-scale and heavy-duty mechanical equipment on the strength and the bearing capacity of the spring material, the preferred embodiment of the invention is that the material of the spiral metal spring is spring steel.
In order to ensure that the insulating layer 3 is tightly adhered to the inner wall of the hollow hole 2, is not easy to fall off, is thin, and is extremely cracked when the metal material cracks, the insulating layer 3 is a plastic spraying layer or an insulating paint layer in a further preferable embodiment of the invention.
In order to ensure that the conductive liquid 5 in the hollow hole 2 does not leak out and to facilitate the mounting and dismounting of the plug, a further preferred embodiment of the present invention is that the insulating plug 4 is an insulating rubber plug or an insulating sealant.
In order to prevent the leakage of the conductive liquid 5, and simultaneously, temporarily adhere the cracked material, and avoid the problem that the conductive liquid 5 is frozen and can not flow in a low-temperature environment, so that the conductive liquid is ineffective, a further preferred embodiment of the present invention is that the conductive liquid 4 is a low-temperature resistant conductive glue solution.
In order to facilitate monitoring of the elastic force change condition of the spring 1, whether the spring 1 has elastic force reduction or elastic force failure and other conditions, the further preferred embodiment of the invention is that a groove 7 is arranged on one side of the spiral ring inner ring on the surface of the spiral metal spring, the groove 7 is parallel to the axis of the spring blank, the cross section of the groove 7 is a C-shaped groove, a tensile stress resistance wire 8 is embedded in the groove 7, and two ends of the tensile stress resistance wire 8 are fixed with two ends of the spiral spring and are used for being electrically connected with a tensile stress detector.
During detection, the tensile stress resistance wire 8 applies a certain pretightening force to the two ends of the compression spiral spring 1, and then the tensile stress resistance wire 8 and the two ends of the spiral spring are fixed. The compression coil spring is compressed to the limit state to detect the resistance value of the tensile stress resistance wire 8, and then the compression coil spring is released to the free state to detect the resistance value of the tensile stress resistance wire 8 again. When the resistance value of the pull-down stress resistance wire 8 in the use state of the compression spiral spring is smaller than that in the compression limit state, or the resistance value of the pull-down stress resistance wire in the free state is smaller than that in the free state, the elasticity performance of the spring is reduced, if the resistance value is smaller than a set threshold value, the elasticity of the spring is failed, and if the resistance value is zero, the spring is possibly broken. If the detected resistance value is larger than the resistance value in the free state, the spring is not used correctly, deflection can occur and the using state of the spring can be distorted.
The stretched coil spring can be detected by the same detection method as that for the compression spring. Or applying a certain pretightening force to the tensile stress resistance wire 8 at the two ends of the tensile spiral spring, and fixing the tensile stress resistance wire 8 and the two ends of the spiral spring. The tensile coil spring is stretched to the use limit state to detect the resistance value of the tensile stress resistance wire 8, and then the tensile coil spring is released to the free state to detect the resistance value of the tensile stress resistance wire 8 again. When the resistance value of the pull stress resistance wire 8 in the use state of the tension spiral spring is larger than that in the use limit state, or the resistance value of the pull stress resistance wire in the free state is larger than that in the free state, the elasticity performance of the spring is reduced, if the resistance value is larger than a set threshold value, the elasticity of the spring is failed, and if the resistance value is zero, the spring is possibly broken. If the detected resistance value is smaller than the resistance value in the free state, the spring is not used correctly and can be compressed for use.
In order to prevent the tensile stress resistance wire 8 from falling out of the C-shaped groove, in a preferred embodiment of the present invention, an insulating glue is filled in the groove 7.
In order to avoid the conduction between the tensile stress resistance wire 8 and the metal spring body to form a conductive loop and interfere with the detection accuracy, the invention further preferably adopts the embodiment that the surface of the tensile stress resistance wire 8 is provided with an insulating sheath.
Because the structure of the spring is relatively complex, the spring is only suitable for large, heavy and heavy-load mechanical equipment, and the spring 1 is a special spring for heavy equipment in a further preferred embodiment of the invention.
The structure of the spring 1 can be applied to a tension spring and can also be applied to a compression spring, and in a further preferred embodiment of the invention, the spring 1 is a compression spring or a tension spring.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The spring is characterized in that the spring is a hollow spiral metal spring, an insulating layer is arranged on the inner wall of a hollow hole of the hollow spiral metal spring, insulating plugs are arranged at two ends of the hollow hole of the hollow spiral metal spring, conductive liquid is filled in the hollow hole of the spiral metal spring, a conductive probe penetrating through the insulating plugs is inserted in the center of the insulating plugs, the surface of the spiral metal spring and the conductive probe are respectively and electrically connected with a detection circuit, a groove is arranged on one side, located on the inner ring side of the spiral ring, of the surface of the spiral metal spring and is parallel to the axis of a spring blank, the cross section of the groove is a C-shaped groove, a tensile stress resistance wire is embedded in the groove, and two ends of the tensile stress resistance wire are fixed with two ends of the spiral spring and are used for being electrically connected with a tensile stress detector.
2. The spring with a centrally disposed sensing medium of claim 1, wherein the coiled metal spring is made of spring steel.
3. The spring with a detection medium disposed in the center of claim 2, wherein the insulating layer is a plastic-sprayed layer or an insulating paint layer.
4. The spring with a detection medium arranged in the center of claim 3, wherein the insulating plug is an insulating rubber plug or an insulating sealant.
5. The spring with a detection medium arranged in the center of claim 4, wherein the conductive liquid is a low-temperature-resistant conductive glue solution.
6. The spring with a detection medium arranged in the center of claim 1, wherein the groove is filled with an insulating glue.
7. The spring with the detection medium arranged in the center is characterized in that an insulating sheath is arranged on the surface of the tensile stress resistance wire.
8. The centrally disposed sensing media spring of claim 7, wherein the spring is a heavy equipment specific spring.
9. The spring with the detection medium arranged in the center of the spring as claimed in claim 8, wherein the spring is a compression spring or a tension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910623467.4A CN110454531B (en) | 2019-07-11 | 2019-07-11 | Spring with detection medium in center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910623467.4A CN110454531B (en) | 2019-07-11 | 2019-07-11 | Spring with detection medium in center |
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| Publication Number | Publication Date |
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| CN110454531A CN110454531A (en) | 2019-11-15 |
| CN110454531B true CN110454531B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910623467.4A Active CN110454531B (en) | 2019-07-11 | 2019-07-11 | Spring with detection medium in center |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102020100932B4 (en) * | 2020-01-16 | 2021-12-02 | Efaflex Tor- Und Sicherheitssysteme Gmbh & Co. Kg | Spring for a lifting gate with a monitoring device, system with a gate and the spring with the monitoring device, and methods therefor |
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| IT210649Z2 (en) * | 1987-04-14 | 1989-01-11 | Magneti Marelli Spa | WATERPROOF ELECTRIC PRESSURE SWITCH FOR HYDRAULIC OR PNEUMATIC CIRCUITS |
| FR2616906A1 (en) * | 1987-06-17 | 1988-12-23 | Gazzano Maurice | Pressure and deformation sensor |
| US20070186684A1 (en) * | 2003-07-24 | 2007-08-16 | Pham Nghieu Q | Vibrating tube mass flow meter |
| CN201408095Y (en) * | 2009-03-17 | 2010-02-17 | 胡少伟 | Spring resistance type anchor stem dynamometer |
| CN101705975B (en) * | 2009-04-24 | 2011-11-23 | 南京工程学院 | Spring with adjustable and controllable rigidity of thin-wall hollow deformed section |
| CN201740708U (en) * | 2010-08-17 | 2011-02-09 | 山西晋西压力容器有限责任公司 | Working table for testing elasticity performance of release springs |
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| WO2014206444A1 (en) * | 2013-06-25 | 2014-12-31 | Abb Technology Ltd | A helical torsion spring and a spring drive for an electrical switching apparatus including the torsion spring |
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| CN103837134A (en) * | 2014-03-06 | 2014-06-04 | 湖南科技学院 | Differential capacitor type obliquity sensor |
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| KR20160025354A (en) * | 2014-08-27 | 2016-03-08 | 신범근 | Aiming sprinkler |
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2019
- 2019-07-11 CN CN201910623467.4A patent/CN110454531B/en active Active
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