CN107655820B - Tool for detecting surface drying time under constant force and working method thereof - Google Patents
Tool for detecting surface drying time under constant force and working method thereof Download PDFInfo
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- CN107655820B CN107655820B CN201710750810.2A CN201710750810A CN107655820B CN 107655820 B CN107655820 B CN 107655820B CN 201710750810 A CN201710750810 A CN 201710750810A CN 107655820 B CN107655820 B CN 107655820B
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- 238000001035 drying Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 127
- 239000002184 metal Substances 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract description 14
- 239000011521 glass Substances 0.000 description 7
- 239000012212 insulator Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drying Of Solid Materials (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a tool for detecting the surface drying time under constant force and a working method thereof. Wherein, the tool comprises a metal bracket, a metal connecting rod and a testing end; the metal connecting rods are connected with the metal bracket through connecting rod fixing shafts, and form a lever structure by taking the connecting rod fixing shafts as fulcrums; the lower end of the metal connecting rod is connected with a testing end, the testing end comprises a testing cap and a supporting base, and the supporting base is arranged right below the testing cap and is not directly contacted with the testing cap in an initial state of a tool for detecting the surface drying time under constant force; the supporting base is used for placing a test sample. The test device can effectively test the surface drying time of the RTV coating, reduce the test workload and improve the test efficiency.
Description
Technical Field
The invention belongs to the field of electrical measurement, and particularly relates to a tool for detecting surface drying time under constant force and a working method thereof.
Background
The RTV coating is short for long-acting anti-pollution flashover coating of room temperature vulcanized silicone rubber. The RTV coating is a novel hydrophobic coating which takes room temperature vulcanized silicone rubber as a basic raw material, and can be cured into a rubber-like film at normal temperature after being coated on the surface of the insulator, and the RTV coating firmly covers the surface of the insulator, so that the pollution flashover voltage of the insulator can be obviously improved.
The RTV coating surface drying time has important influence on the coating performance and the construction process and is an essential item of coating test. According to the requirements of GB/T627 'Normal temperature curing Silicone rubber anti-pollution flashover coating' standard, a surface drying time test is an essential item of a sampling test and a type test.
The standard specifies that the qualified range of the surface drying time is 25min-45min under the conditions of 25 +/-2 ℃ and 40% -70% RH. The test method recommended in the GB/T627 standard is a small glass ball method, which is given by GB/T6753.2 Small glass ball method for paint surface drying test, each test requires a plurality of small glass balls, a soft brush, a glass tube and the like, and the operation is complex and the time consumption is long. When the surface drying time is measured by the small glass bead method, several test samples need to be prepared because damage may be caused to the surfaces of the test samples when the paint film is lightly brushed with a soft brush, which increases the test workload for measuring the surface drying time.
In summary, a tool for detecting the surface drying time with constant force is needed to effectively test the surface drying time of the RTV coating, reduce the test workload and improve the test efficiency.
Disclosure of Invention
In order to solve the defects of the prior art, a first aspect of the embodiments of the present invention provides a tool for detecting a surface drying time under a constant force, which can effectively test a surface drying time of an RTV coating, reduce a test workload, and improve a test efficiency.
The tool for detecting the surface drying time under the constant force comprises a metal bracket, a metal connecting rod and a testing end, wherein the metal bracket is arranged on the testing end; the metal connecting rods are connected with the metal bracket through connecting rod fixing shafts, and form a lever structure by taking the connecting rod fixing shafts as fulcrums; the lower end of the metal connecting rod is connected with a testing end, the testing end comprises a testing cap and a supporting base, and the supporting base is arranged right below the testing cap and is not directly contacted with the testing cap in an initial state of a tool for detecting the surface drying time under constant force; the supporting base is used for placing a test sample.
With reference to the first aspect of the embodiments of the present invention, in a first implementation manner of the first aspect of the embodiments of the present invention, the metal connecting rod includes a bent rod, one end of the bent rod is connected to the metal bracket through a connecting rod fixing shaft, the other end of the bent rod is connected to the straight rod, the straight rod penetrates through the metal bracket, and the lower end of the straight rod is connected to the testing end.
It should be noted that the metal connecting rod can also be implemented by other structures, such as: the metal connecting rod comprises an inclined rod, one end of the inclined rod is connected with the metal support through a connecting rod fixing shaft, the other end of the inclined rod is connected with the straight rod, the straight rod penetrates through the metal support, and the lower end of the straight rod is connected with the testing end.
With reference to the first implementation manner of the first aspect of the embodiment of the present invention, a spring is further inserted through the straight rod, one end of the spring is fixed to the straight rod, and the other end of the spring is connected to the metal bracket.
The test cap is brought into contact with the test specimen and pressed under the action of the spring.
With reference to the first implementation manner of the first aspect of the embodiment of the present invention, a baffle is further installed above the test cap, and the baffle is fixed to the straight rod.
A baffle is arranged above the test cap to prevent the test cap from being separated when the straight rod is lifted.
With reference to the first implementation manner of the first aspect of the embodiment of the present invention, one end of the curved rod connected to the straight rod is in an arc-shaped structure, and is provided with a straight rod hole.
With reference to the first implementation manner of the first aspect of the embodiment of the present invention, the straight rod is inserted into the straight rod hole.
With reference to the first implementation manner of the first aspect of the embodiment of the present invention, a metal cap is further installed at an end of the straight rod, which extends out of the curved rod, and is used as a stress point of the curved rod acting on the straight rod.
With reference to the first aspect of the embodiments of the present invention, in a second implementation manner of the first aspect of the embodiments of the present invention, the test cap is a detachable structure.
The second aspect of the embodiment of the invention provides a working method of a tool for detecting the surface dry time under constant force.
The working method of the tool for detecting the surface dry time under the constant force provided by the second aspect of the embodiment of the invention comprises the following steps:
pressing one end of a metal connecting rod, putting a sample to be tested between a test cap and a supporting base, enabling the test cap to be in contact with the sample and exerting pressure, pressing the right side of a bent rod again after a period of time, lifting the metal connecting rod and the test cap, observing whether RTV residues exist on the contact position of the bottom end of the test cap and the sample to be tested, and observing whether the surface of the pressed part of the sample to be tested is damaged;
if the surface of the sample to be tested is not damaged and the bottom of the testing end has no RTV residue, judging that the surface is dry; and if RTV residues exist at the bottom of the testing end, the testing cap is taken down in time and replaced by a new testing cap.
In combination with the second aspect of the embodiments of the present invention, in the first implementation manner of the second aspect of the embodiments of the present invention, when the straight rod in the metal connecting rod is lifted to the highest position, the baffle above the test cap is in contact with the metal bracket, and the spring in the metal connecting rod is in the longest elastic stretching state; when the straight rod in the metal connecting rod is pressed down to the lowest position, the testing cap is pressed on the supporting base, and the spring in the metal connecting rod is in the shortest elastic stretching state.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the metal support part is held by hand, the test end is driven by the metal connecting rod, the test end lightly presses the RTV coating test sample, the test end is lifted up through the connecting rod after a plurality of times, whether the surface of the RTV test sample is damaged or not is observed, and whether RTV residue exists at the bottom of the test end or not is observed. The surface of the RTV test sample is not damaged, no RTV residue exists at the bottom of the test end, and the surface is judged to be dry; compared with a small glass ball method, the testing device greatly simplifies the step of testing the surface drying time, saves the testing time and improves the testing efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a tool for constant force detection of the dry time of the watch.
The device comprises a base, a testing cap, a connecting rod fixing shaft, a bent rod, a straight rod, a spring, a testing cap, a supporting base and a baffle, wherein the base 1 is a metal support, the connecting rod fixing shaft 2 is a connecting rod fixing shaft, the bent rod 3 is a bent rod, the straight rod 4 is a spring, the testing cap 6 is a.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Fig. 1 is a schematic structural diagram of a tool for constant force detection of the dry time of the watch.
As shown in fig. 1, a tool for constant force detection of surface dry time according to an embodiment of the present invention includes a metal bracket 1, a metal connecting rod, and a testing end; the metal connecting rod 1 is connected with the metal bracket through a connecting rod fixing shaft 2, and the metal connecting rod forms a lever structure by taking the connecting rod fixing shaft 2 as a fulcrum; the lower end of the metal connecting rod is connected with a testing end, the testing end comprises a testing cap 6 and a supporting base 7, the supporting base 7 is arranged right below the testing cap 6, and is not directly contacted with the testing cap 6 in an initial state of a tool for detecting the surface drying time under constant force; the support base 7 is used for placing a test sample.
Specifically, as shown in fig. 1, the metal connecting rod includes a bent rod 3, one end of the bent rod 3 is connected to the metal support 1 through a connecting rod fixing shaft 2, the other end of the bent rod is connected to a straight rod 4, the straight rod 4 penetrates through the metal support 1, and the lower end of the straight rod 4 is connected to the testing end.
In fig. 1, the support base 7 is mounted on the metal link 1.
It should be noted that the metal connecting rod can also be implemented by other structures, such as: the metal connecting rod comprises an inclined rod, one end of the inclined rod is connected with the metal support through a connecting rod fixing shaft, the other end of the inclined rod is connected with the straight rod, the straight rod penetrates through the metal support, and the lower end of the straight rod is connected with the testing end.
In specific implementation, a spring 5 is further arranged on the straight rod 4 in a penetrating manner, one end of the spring 5 is fixed on the straight rod 4, and the other end of the spring is connected with the metal bracket 1.
The test cap is brought into contact with the test specimen and pressed under the action of the spring.
In specific implementation, a baffle plate 8 is further installed above the test cap 6, and the baffle plate 8 is fixed on the straight rod 4.
A baffle is arranged above the test cap to prevent the test cap from being separated when the straight rod is lifted.
In specific implementation, one end of the bent rod 3 connected with the straight rod 4 is in an arc-shaped structure and is provided with a straight rod hole.
The straight rod penetrates through the straight rod hole.
And a metal cap is further mounted at one end of the straight rod, which extends out of the bent rod, and is used as a stress point of the bent rod acting on the straight rod.
The test cap is of a detachable structure.
The test cap can be realized by adopting the following materials: the test cap is made of polytetrafluoroethylene, and the wall thickness is 0.5 mm. The inner diameter of the test cap is suitable for being just sleeved on the metal straight rod, and the height of the cap is 3 mm.
The working method of the tool for detecting the surface drying time under the constant force provided by the embodiment of the invention comprises the following steps:
the metal bracket 1 is held by hand, and the straight rod 4 is lifted by pressing the right side of the bent rod 3. The test method comprises the steps of placing a to-be-tested sample between a test cap 6 and a supporting base 7, loosening a bent rod 3, contacting the test cap with the sample and exerting pressure under the action of a spring 5, pressing the right side of the bent rod 3 again after a period of time, lifting a straight rod and the test cap, observing whether RTV (room temperature vulcanized) residues exist at the contact position of the bottom end of the test cap and the sample, and observing whether the surface of the pressed part of the sample is damaged. And (3) the surface of the RTV test sample is not damaged, no RTV residue exists at the bottom of the test end, and the surface is judged to be dry. If RTV remains at the bottom of the testing end, the testing cap is taken down in time and replaced by a new testing cap.
When the straight rod 4 is lifted to the highest position, the baffle 8 is in contact with the metal bracket 1, and the spring 5 is in the longest elastic stretching state; when the straight rod 4 is pressed down to the lowest position, the test cap 6 is pressed on the support base 7, and the spring 5 is in the shortest elastic stretching state.
According to the invention, the metal support part is held by hand, the test end is driven by the metal connecting rod, the test end lightly presses the RTV coating test sample, the test end is lifted up through the connecting rod after a plurality of times, whether the surface of the RTV test sample is damaged or not is observed, and whether RTV residue exists at the bottom of the test end or not is observed. The surface of the RTV test sample is not damaged, no RTV residue exists at the bottom of the test end, and the surface is judged to be dry; compared with a small glass ball method, the testing device greatly simplifies the step of testing the surface drying time, saves the testing time and improves the testing efficiency.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (5)
1. A tool for detecting the surface drying time under constant force is characterized by comprising a metal bracket, a metal connecting rod and a testing end; the metal connecting rods are connected with the metal bracket through connecting rod fixing shafts, and form a lever structure by taking the connecting rod fixing shafts as fulcrums; the lower end of the metal connecting rod is connected with a testing end, the testing end comprises a testing cap and a supporting base, and the supporting base is arranged right below the testing cap and is not directly contacted with the testing cap in an initial state of a tool for detecting the surface drying time under constant force; the supporting base is used for placing a test sample;
the metal connecting rod comprises a bent rod, one end of the bent rod is connected with the metal support through a connecting rod fixing shaft, the other end of the bent rod is connected with the straight rod, the straight rod penetrates through the metal support, and the lower end of the straight rod is connected with the testing end;
a spring is further arranged on the straight rod in a penetrating mode, one end of the spring is fixed on the straight rod, and the other end of the spring is connected with the metal support;
a baffle is further mounted above the test cap and fixed on the straight rod;
the test cap is of a detachable structure.
2. The tool for constant force detection of watch-dry time as claimed in claim 1, wherein the end of the curved bar connected to the straight bar is a circular arc structure and is provided with a straight bar hole.
3. The tool for constant force detection of watch stem time as claimed in claim 2, wherein said straight rod is inserted into the hole of the straight rod.
4. The tool for constant force detection of open time as claimed in claim 3, wherein the end of the straight rod extending out of the bent rod is further provided with a metal cap as a force point for the straight rod by the bent rod.
5. A method of operating the constant force meter dry time measurement tool of any of claims 1-4, comprising:
pressing one end of a metal connecting rod, putting a sample to be tested between a test cap and a supporting base, enabling the test cap to be in contact with the sample and exerting pressure, pressing the right side of a bent rod again after a period of time, lifting the metal connecting rod and the test cap, observing whether RTV residues exist on the contact position of the bottom end of the test cap and the sample to be tested, and observing whether the surface of the pressed part of the sample to be tested is damaged;
if the surface of the sample to be tested is not damaged and the bottom of the testing end has no RTV residue, judging that the surface is dry; if RTV residue exists at the bottom of the test end, the test cap is taken down in time and replaced by a new test cap;
when the straight rod in the metal connecting rod is lifted to the highest position, the baffle above the testing cap is contacted with the metal bracket, and the spring in the metal connecting rod is in the longest elastic stretching state; when the straight rod in the metal connecting rod is pressed down to the lowest position, the testing cap is pressed on the supporting base, and the spring in the metal connecting rod is in the shortest elastic stretching state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750810.2A CN107655820B (en) | 2017-08-28 | 2017-08-28 | Tool for detecting surface drying time under constant force and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750810.2A CN107655820B (en) | 2017-08-28 | 2017-08-28 | Tool for detecting surface drying time under constant force and working method thereof |
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| Publication Number | Publication Date |
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| CN107655820A CN107655820A (en) | 2018-02-02 |
| CN107655820B true CN107655820B (en) | 2020-02-14 |
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| CN109187933A (en) * | 2018-07-24 | 2019-01-11 | 鳄鱼制漆(上海)有限公司 | A kind of method of quick test coating open hour |
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| CN201755945U (en) * | 2010-06-07 | 2011-03-09 | 珠海天威飞马打印耗材有限公司 | Ink filling device |
| CN102179019B (en) * | 2011-05-05 | 2012-07-04 | 中国科学技术大学 | Portable clean gas extinguisher |
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