CN113686720A - Testing device and testing method for compression water absorption of buffering stop block - Google Patents
Testing device and testing method for compression water absorption of buffering stop block Download PDFInfo
- Publication number
- CN113686720A CN113686720A CN202110957109.4A CN202110957109A CN113686720A CN 113686720 A CN113686720 A CN 113686720A CN 202110957109 A CN202110957109 A CN 202110957109A CN 113686720 A CN113686720 A CN 113686720A
- Authority
- CN
- China
- Prior art keywords
- stop block
- water absorption
- assembly
- testing
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 43
- 230000003139 buffering effect Effects 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 title claims abstract description 32
- 238000007906 compression Methods 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device for testing the compression water absorption of a buffering stop block, which comprises a sample assembly, a liquid containing assembly, a supporting frame, a lifting assembly and an auxiliary assembly, wherein the sample assembly is arranged on the sample assembly; the supporting frame is divided into three layers by a lower fixed plate, a middle movable plate and an upper fixed plate and is supported and fixed by a stand column, a liquid containing groove is arranged on the middle movable plate, a lower bracket is fixedly arranged at the bottom of the liquid containing groove, an upper bracket is arranged on the lower bottom surface of the upper fixed plate, and a sample assembly is arranged between the lower bracket and the upper bracket; the lifting assembly is fixed on the upper surface of the lower fixed plate, and pushes the middle movable plate to move between the lower fixed plate and the upper fixed plate, so that the sample assembly is extruded. The device provided by the invention is simple to operate, low in cost, visible and controllable, and can accurately complete the test of the compression water absorption of the buffering stop block which is compressed to the specified height H and placed for the specified time T.
Description
Technical Field
The invention relates to the technical field of measurement of buffering stop blocks, in particular to a compression water absorption testing device for a buffering stop block.
Background
The buffering stop block is often exposed to water or a humid environment during the operation process, and the water absorption performance is required to represent the performance of the buffering stop block during the operation process under the water or the humid environment.
In the water absorption performance characterization parameters, the water absorption rate is an important index, and the water absorption rate refers to the water absorption capacity of plastics under standard atmospheric pressure, and is closely related to the microstructure of a material, so that the water absorption rate is also an important index of the performance of a reaction product.
In particular, the water absorption is measured as the water absorbed by the plastic and is expressed as a percentage. In the usual temperature range, the water absorption of the plastic is determined by the number of voids therein, the size of the voids, the manner in which the particles are arranged with respect to each other, the amount of molecular movement, the presence or absence of polar groups in the main chain, the water resistance of the plastic, and the like.
The conventional water absorption test method is to use bolts to pass through two ends of the buffering stop block, set screws at the two ends, fasten the screws at the two ends and perform a compression water absorption test. The existing device is simple, low in cost and high in operation difficulty. And the water absorption performance of the material under the actual operating condition of the buffering stop block cannot be accurately reflected.
Therefore, the technical scheme is provided, the compression water absorption of the buffering stop block can be accurately measured, the operation is simple, and the method is an important research direction.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device for testing the compression water absorption of a buffering stop block.
The invention adopts the following technical scheme for solving the technical problems:
in a first aspect, the invention provides a device for testing the compression water absorption of a buffering stop block, which comprises a sample assembly, a liquid containing assembly, a support frame, a lifting assembly and an auxiliary assembly, wherein the sample assembly is arranged on the sample assembly; wherein,
the supporting frame is divided into three layers by a lower fixed plate, a middle movable plate and an upper fixed plate and is supported and fixed by a stand column, the liquid containing tank is arranged on the middle movable plate, a lower support is fixedly arranged at the bottom of the liquid containing tank, an upper support is arranged on the lower bottom surface of the upper fixed plate, and the sample assembly is arranged between the lower support and the upper support;
the lifting assembly is fixed on the upper surface of the lower fixing plate, and pushes the middle moving plate to move between the lower fixing plate and the upper fixing plate so as to extrude the sample assembly.
Preferably, the sample assembly comprises a screw, a bottom washer, a bottom set screw, a top washer, and a top set screw; the two ends of the screw rod are fixed with the bottom fixing screw and the top fixing screw through threads; the screw rod between the bottom fixing screw and the top fixing screw is provided with the bottom gasket and the top gasket, and the buffering stop block is axially fixed on the screw rod.
Preferably, the lower fixing plate and the upper fixing plate are respectively fixed at two ends of the four upright columns, four corners of the middle moving plate are provided with fixing holes, and the upright columns penetrate through the fixing holes.
Preferably, the lower surface of the upper bracket contacts the upper surface of the top pad, and the upper surface of the lower bracket contacts the lower surface of the bottom pad.
Preferably, the lifting assembly is a jack or lead screw.
Preferably, the power source of the lifting assembly is hydraulic, pneumatic or electric.
Preferably, a graduated scale is arranged on the upright post.
Preferably, a pressure sensor is included.
Preferably, the material of the water bucket component is one or more of a metal material, a non-metal material and a high polymer material.
Preferably, the liquid containing groove is circular or rectangular in shape.
In a second aspect, the invention provides a method for testing the compression water absorption of the buffering stop block by using the device, which comprises the following steps:
step S1: measuring the mass m1 and the height of the dried buffer stop block;
step S2: after the buffering stop block, the bottom gasket, the bottom fixing screw, the top gasket and the top fixing screw are threaded on the screw rod, the screw rod is placed in a liquid containing groove to be upright, and water is added to submerge the sample assembly;
step S3: the middle moving plate is lifted until the lower surface of the upper support is contacted with the upper surface of the top gasket, the upper surface of the lower support is contacted with the lower surface of the bottom gasket, and the zero point of the graduated scale is adjusted to be consistent with the position of the middle moving plate;
step S4: continuously lifting the middle moving plate until reaching the height required by the test, and standing for a certain time;
step S5: lowering to a fully relaxed state, removing the sample assembly, unloading the buffer stop block, wiping off surface moisture, and measuring the mass m2 of the dried buffer stop block;
the water absorption rate W of the buffering stop block is (m2-m1)/m1 multiplied by 100%.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the invention provides a compression water absorption testing device for a buffering stop block. The device provided by the invention is simple to operate, low in cost, visible and controllable, and can accurately complete the test of the compression water absorption of the buffering stop block which is compressed to the specified height and placed for the specified time T.
Drawings
FIG. 1 is a schematic structural diagram of a device for testing the compressive water absorption of a buffering stop block according to the present invention;
FIG. 2 is a cross-sectional view of a device for testing the compressive water absorption of a buffering stop block according to the present invention at an initial position;
FIG. 3 is a cross-sectional view of the testing apparatus for testing the compressive water absorption of the buffering stop block lifted to a target height according to the present invention;
FIG. 4 is a schematic view of the sample assembly at an initial height;
FIG. 5 is a schematic view of the sample assembly raised to a target height;
FIG. 6 is a top view of the sleeve;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
the reference numerals denote the description:
1-sample assembly, 11-buffer stop block, 12-screw, 13-bottom washer, 14-bottom set screw, 15-top washer, 16-top set screw,
2-liquid containing component, 21-lower support, 22-liquid containing groove,
3-supporting frame, 31-upright post, 32-lower fixed plate, 33-middle moving plate, 34-upper fixed plate,
4-lifting component, 41-jack, 42-lifting handle,
5-auxiliary component, 51-upper support, 52-sleeve.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.
Example 1:
referring to fig. 1, the present embodiment provides a device for testing a compression water absorption rate of a buffering stop block, which includes a sample assembly 1, a liquid containing assembly 2, a supporting frame 3, a lifting assembly 4 and an auxiliary assembly 5.
Specifically, as shown in fig. 2 to 5, the sample assembly 1 includes a screw 12, a bottom washer 13, a bottom fixing screw 14, a top washer 15, and a top fixing screw 16. Two ends of the screw 12 are fixed with the bottom fixing screw 14 and the top fixing screw 16 through threads; the screw 12 between the bottom fixing screw 14 and the top fixing screw 16 is provided with a bottom gasket 13 and a top gasket 15, and the buffering stop block 11 is axially fixed on the screw 12 through the bottom gasket 13 and the top gasket 15. The sample assembly 1 is placed between the lower holder 21 and the upper holder 51.
Specifically, as shown in fig. 2 to 3, the liquid containing assembly 2 includes a lower bracket 21 and a liquid containing groove 22. The lower bracket 21 is fixed on the inner bottom surface of the liquid containing groove 22. Further, the lower bracket 21 is ring-shaped, the lower end of the screw 12 and the bottom fixing screw 14 are inserted into the lower bracket 21, and the upper surface of the lower bracket 21 is in contact with the lower surface of the bottom gasket 13.
Specifically, as shown in fig. 2 to 3, the supporting frame 3 is divided into three layers by a lower fixing plate 32, a middle moving plate 33 and an upper fixing plate 34, and is supported and fixed by the upright 31. Further, the lower fixing plate 32 and the upper fixing plate 34 are respectively fixed at two ends of the four columns 31, four corners of the middle moving plate 33 are provided with fixing holes, and the columns 31 pass through the fixing holes.
Specifically, as shown in fig. 2 to 3, the liquid container 22 is disposed on the middle moving plate 33, and an upper bracket 51 is disposed on a lower bottom surface of the upper fixing plate 34. Further, the upper bracket 51 has a ring shape, the upper end of the screw 12 and the top fixing screw 16 are inserted into the upper bracket 51, and the lower surface of the upper bracket 51 is in contact with the upper surface of the top gasket 15.
In one embodiment, the upper bracket 51 has a pressing opening at a position corresponding to the upper fixing plate 34.
Specifically, as shown in fig. 2 to 3, the lifting assembly 4 is fixed on the upper surface of the lower fixed plate 32, and pushes the middle moving plate 33 to move between the lower fixed plate 32 and the upper fixed plate 34, so as to press the sample assembly 1.
In this embodiment, the upright column 31 is provided with a scale. The elevation of the lift assembly 4 is shown.
In this embodiment, a pressure sensor is further included.
In this embodiment, the lifting assembly 4 is a jack.
In one embodiment, the power source of the lifting assembly 4 is hydraulic, pneumatic or electric.
In terms of time, the compression water absorption test is generally divided into two types, namely a short-term (e.g., 5min) and a long-term (e.g., 48 h). In one embodiment of the long-term test, as shown in fig. 6-7, the test apparatus further comprises a sleeve 52, the lower end of the sleeve 52 is provided with a sunken groove, the wall surface of the sunken groove is matched with the shape of the top fixing screw 16, and the upper end of the sleeve 52 is provided with a rotating handle, and a worker applies force to the top fixing screw 16 through the rotating handle. As shown in fig. 1, a pressing opening is formed in the upper bracket 51 at a position corresponding to the upper fixing plate 34, and the lower portion of the sleeve 52 is engaged with the top fixing screw 16 after passing through the pressing opening.
Example 2:
this example 2 provides a short-term test method for the compression water absorption of the buffering stopper using the device of example 1, comprising the following steps:
step S1: measuring the mass m1 and the height H1 of the dried buffer stop block;
step S2: as shown in fig. 4, the buffering stop block 11, the bottom gasket 13, the bottom fixing screw 14, the top gasket 15 and the top fixing screw 16 are threaded on the screw 12, the sample assembly 1 is placed in the liquid containing groove 22 to be upright and positioned between the lower bracket 21 and the upper bracket 51, and water is added to submerge the sample assembly 1, as shown in fig. 5, at this time, the pressure sensor displays a value of 0;
step S3: using the lifting assembly 4 to lift the middle moving plate 33 until the lower surface of the upper bracket 51 contacts with the upper surface of the top gasket 15, the upper surface of the lower bracket 21 contacts with the lower surface of the bottom gasket 13, and the zero point of the scale is adjusted to be consistent with the position of the middle moving plate 33;
step S4: using the lifting assembly 4 to continuously lift the middle moving plate 33 until the height required by the test is the compression height H2, the compression distance is (H1-H2), standing the lifting assembly 4 for a certain time T, and recording the pressure value;
step S5: after maintaining for 5min, the sample assembly 1 was removed by lowering the sample assembly to a completely relaxed state by the lifting unit 4, the buffer stopper 11 was removed, the surface moisture was wiped off, and the mass m2 of the dried buffer stopper 11 was measured.
The water absorption W of the buffer stopper was (m2-m1)/m1 × 100%.
The compressibility in this case was (H1-H2)/H1 × 100%.
Example 3:
this example 2 provides a long-term test method for the compression water absorption of the buffering stopper using the device of example 1, comprising the following steps:
step S1: measuring the mass m1 and the height H1 of the dried buffer stop block;
step S2: as shown in fig. 4, the buffering stop block 11, the bottom gasket 13, the bottom fixing screw 14, the top gasket 15 and the top fixing screw 16 are threaded on the screw 12, the sample assembly 1 is placed in the liquid containing groove 22 to be upright and positioned between the lower bracket 21 and the upper bracket 51, and water is added to submerge the sample assembly 1, as shown in fig. 5, at this time, the pressure sensor displays a value of 0;
step S3: using the lifting assembly 4 to lift the middle moving plate 33 until the lower surface of the upper bracket 51 contacts with the upper surface of the top gasket 15, the upper surface of the lower bracket 21 contacts with the lower surface of the bottom gasket 13, and the zero point of the scale is adjusted to be consistent with the position of the middle moving plate 33;
step S4: using the lifting assembly 4 to continuously lift the middle moving plate 33 until the height required by the test is the compression height H2, the compression distance is (H1-H2), standing the lifting assembly 4 for a certain time T, and recording the pressure value;
step S4: the lower part of the sleeve 52 penetrates through the jacking port and then is matched with the top fixing screw 16, a worker applies acting force to the top fixing screw 16 through a rotating handle of the sleeve 52 to fix the top fixing screw in place, the sleeve 52 is taken down, the middle moving plate 33 is lowered by using the lifting assembly 4, the sample assembly 1 is kept in a compressed state, the sample assembly 1 and the liquid containing groove 22 are taken down, and the support frame 3 can continue to perform next sample compression work;
step S5: the sample assembly 1 and the liquid containing groove 22 are kept in a compressed state for 48 hours, the sample assembly 1 and the liquid containing groove 22 are placed between the middle moving plate 33 and the upper bracket 51, the top gasket 15 is in contact with the upper bracket 51, the liquid containing groove 22 is placed on the middle moving plate 33, a worker applies acting force to the top fixing screw 16 through the sleeve 52 rotating handle, the top fixing screw 16 is taken down, the lifting assembly 4 is used for descending to a completely relaxed state, the sample assembly 1 and the liquid containing groove 22 are taken down, the buffering stop block 11 is detached, surface moisture is wiped, and the mass m2 of the dry buffering stop block 11 is measured.
The water absorption W of the buffer stopper was (m2-m1)/m1 × 100%.
The compressibility in this case was (H1-H2)/H1 × 100%.
Comparative example:
in the comparative example, the buffering stop block, the screw rod and the screw are matched and placed in water to be fixed under the water, and the two ends of the buffering stop block are respectively screwed by a wrench with force until the testing requirements are met.
The screw is fastened under water, and the operation difficulty is very high. The later compression pressure is increased and the operation is more difficult.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (10)
1. A compression water absorption testing device of a buffering stop block is characterized by comprising a sample assembly (1), a liquid containing assembly (2), a supporting frame (3), a lifting assembly (4) and an auxiliary assembly (5); wherein,
the support frame (3) is divided into three layers by a lower fixing plate (32), a middle moving plate (33) and an upper fixing plate (34) and is supported and fixed by an upright post (31); the liquid containing tank (22) is arranged on the middle moving plate (33), a lower support (21) is fixedly arranged at the bottom of the liquid containing tank (22), an upper support (51) is arranged on the lower bottom surface of the upper fixing plate (34), and the sample assembly (1) is arranged between the lower support (21) and the upper support (51);
the lifting assembly (4) is fixed on the upper surface of the lower fixing plate (32), and pushes the middle moving plate (33) to move between the lower fixing plate (32) and the upper fixing plate (34) so as to extrude the sample assembly (1).
2. A bump stop compression water absorption test device as claimed in claim 1, wherein the sample assembly (1) comprises a screw (12), a bottom washer (13), a bottom set screw (14), a top washer (15) and a top set screw (16); the two ends of the screw rod (12) are fixed with the bottom fixing screw (14) and the top fixing screw (16) through threads; the screw rod (12) between the bottom fixing screw (14) and the top fixing screw (16) is provided with the bottom gasket (13) and the top gasket (15), and the buffering stop block (11) is axially fixed on the screw rod (12).
3. The device for testing the compression water absorption of the buffering stop block according to claim 1, wherein the lower fixing plate (32) and the upper fixing plate (34) are respectively fixed at two ends of four upright posts (31), four corners of the middle moving plate (33) are provided with fixing holes, and the upright posts (31) pass through the fixing holes.
4. A bump stop compression water absorption test apparatus as claimed in claim 1, wherein the lower surface of the upper bracket (51) is in contact with the upper surface of the top pad (15), and the upper surface of the lower bracket (21) is in contact with the lower surface of the bottom pad (13).
5. The device for testing the compression water absorption of the buffering stop block as claimed in claim 1, wherein the lifting assembly (4) is a jack or a screw rod.
6. The apparatus for testing the compression water absorption of the buffering stop block according to claim 1, wherein the power source of the lifting assembly (4) is hydraulic, pneumatic or electric.
7. The device for testing the compression water absorption of the buffering stop block according to claim 1, wherein a graduated scale is arranged on the upright column (31).
8. The apparatus for testing the compression water absorption of a bump stop block as claimed in claim 1, comprising a pressure sensor.
9. The device for testing the compression water absorption of the buffering stop block according to claim 1, wherein the water bucket assembly (2) is made of one or more of a metal material, a non-metal material and a polymer material.
10. A method for testing the compression water absorption of a buffering stop block by using the device as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
step S1: measuring the mass m1 and the height of the dried buffer stop block (11);
step S2: after the buffering stop block (11), the bottom gasket (13), the bottom fixing screw (14), the top gasket (15) and the top fixing screw (16) are threaded on the screw rod (12), the screw rod is placed in a liquid containing groove (22) to be upright, and water is added to submerge the sample assembly (1);
step S3: the middle moving plate (33) is lifted until the lower surface of the upper support (51) is contacted with the upper surface of the top gasket (15), the upper surface of the lower support (21) is contacted with the lower surface of the bottom gasket (13), and the zero point of the scale is adjusted to be consistent with the position of the middle moving plate (33);
step S4: continuously lifting the middle moving plate (33) until reaching the required height of the test, and standing for a certain time;
step S5: lowering to a fully relaxed state, removing the sample assembly (1), removing the buffer stop (11), wiping off surface moisture, and measuring the mass m2 of the dried buffer stop (11);
the water absorption rate W of the buffering stop block (11) is (m2-m1)/m1 multiplied by 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110957109.4A CN113686720A (en) | 2021-08-19 | 2021-08-19 | Testing device and testing method for compression water absorption of buffering stop block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110957109.4A CN113686720A (en) | 2021-08-19 | 2021-08-19 | Testing device and testing method for compression water absorption of buffering stop block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113686720A true CN113686720A (en) | 2021-11-23 |
Family
ID=78580790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110957109.4A Pending CN113686720A (en) | 2021-08-19 | 2021-08-19 | Testing device and testing method for compression water absorption of buffering stop block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113686720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420488A (en) * | 2022-08-31 | 2022-12-02 | 中国第一汽车股份有限公司 | Buffer block rigidity test system and method, upper computer and medium |
-
2021
- 2021-08-19 CN CN202110957109.4A patent/CN113686720A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420488A (en) * | 2022-08-31 | 2022-12-02 | 中国第一汽车股份有限公司 | Buffer block rigidity test system and method, upper computer and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113686720A (en) | Testing device and testing method for compression water absorption of buffering stop block | |
| CN212721385U (en) | Flat glass flatness detection device | |
| CN110095347A (en) | Three axis tensilometer of strain controlling formula unsaturated soil | |
| CN211426086U (en) | Intensity detection device is used in circuit board production | |
| CN217277622U (en) | Buffering stop block compression water absorption testing arrangement | |
| CN115824493A (en) | Clamp for metering test of pressure sensor | |
| CN102262017A (en) | Device for pneumatically and rapidly testing compressive property of battery component | |
| CN203465489U (en) | Substrate carrying mechanism | |
| CN212410310U (en) | Test device for detecting compression permanent deformation of elastic material | |
| CN205483243U (en) | At last pneumatic testing arrangement who measures two column type weighing sensor of force standard machine | |
| CN116026210A (en) | Circuit board detection device | |
| CN104833589A (en) | Low-temperature compression set test machine | |
| CN213022608U (en) | Pressure testing device for rubber | |
| CN113281252A (en) | Device and method for quantitatively representing adhesiveness of microscopic film | |
| RU2312324C2 (en) | Method of determining interfacial tension at liquid-solid interface | |
| CN203298951U (en) | Measure apparatus for spring washer elasticity test | |
| CN108593716B (en) | Device and method for rapidly measuring solid water content | |
| CN215812037U (en) | Rapid detection device for strength of stope filling pressing block | |
| CN110043533A (en) | The measuring device and method of air separation pressure in contact surface hydraulic oil | |
| CN202836883U (en) | Press spring balance degree measuring device | |
| CN212722365U (en) | Ring rigidity experimental device | |
| CN220040187U (en) | Detection device is used in tile production | |
| CN101285739A (en) | Plunger cylinder frictional resistance test device | |
| CN221405217U (en) | Ceramic tile detection device | |
| CN108982295B (en) | Device capable of simultaneously detecting harmful particles in multiple lubricating grease samples |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |