AU2020101599A4 - Device for testing elastic recovery rate of building sealing material - Google Patents
Device for testing elastic recovery rate of building sealing material Download PDFInfo
- Publication number
- AU2020101599A4 AU2020101599A4 AU2020101599A AU2020101599A AU2020101599A4 AU 2020101599 A4 AU2020101599 A4 AU 2020101599A4 AU 2020101599 A AU2020101599 A AU 2020101599A AU 2020101599 A AU2020101599 A AU 2020101599A AU 2020101599 A4 AU2020101599 A4 AU 2020101599A4
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- Australia
- Prior art keywords
- pair
- fixedly connected
- fixture
- plates
- disposed
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
Abstract
Disclosed is a device for testing elastic recovery rate of building sealing material, wherein a pair
of side guard plates are fixedly connected to an upper end of a bottom plate at intervals; a lower
fixture is composed of a pair of single L-shaped fixtures A; vertical sections of the pair of single
L-shaped fixtures A are fixedly connected to the upper end of the bottom plate; the upper fixture
is mainly composed of a connecting beam, a cylindrical beam and a single L-shaped fixture B,
and vertical sections of the pair of single L-shaped fixtures B are fixedly connected to both ends
of the connecting beam; the cylindrical beam is fixedly connected to an upper end of the
connecting beam, and the outer side thereof is provided with an external thread; a motor is
disposed between upper ends of the pair of side guard plates through a pair of fixing plates, and
an output shaft thereof is fixedly connected to an upper end of a loading sleeve; a lower portion of
the loading sleeve is fitted on an outer side of an upper portion of the cylindrical beam through
thread fitting; inner ends of a pair of sleeve limit plates are in cooperation with an annular groove
in the middle of the loading sleeve; an inner end of a guide beam is fixedly connected to the
single L-shaped fixture B on one side, and an outer end thereof is in limited cooperation with a
pair of guide limit plates fixed connected to the side guard plate. The device is small in size, light
in weight, easy to operate, and low in manufacturing cost.
148
Iig.
15
187
18 13
Fig. 1
1/2
Description
Iig. 15
187
18 13
Fig. 1
1/2
The utility model relates to the technical field of building material testing, in particular, to a
device for testing elastic recovery rate of building sealing material.
Elastic recovery rate is one of the important performance indicators of building structural
sealing materials. According to GB/T13477.17-2017 (Test Method for Building Sealing
Materials), the test of elastic recovery rate requires the help of a tensile testing machine;
specifically, an "I-shaped" sample is put into a tensile testing machine and stretched to a fixed
amount of deformation at a rate of (5.5 ±0.7) mm/min to perform the recovery rate testing.
Currently, the tensile testing machine used in the elastic recovery rate testing is generally a
universal tensile machine, such as an electronic universal testing machine, a dynamic fatigue
testing machine, etc.; these machines are not only large in size and weight, but also complicated
in operation, and they are expensive and have poor versatility while requiring custom-made
loading molds, which further increases manufacturing costs.
In view of the problems in the prior art, the utility model provides a device for testing elastic
recovery rate of building sealing material. The device is small in size, light in weight, easy to
operate, and low in manufacturing cost.
In order to achieve above purpose, the utility model provides a device for testing elastic
recovery rate of building sealing material, including a bottom plate, a motor, a side guard plate, a
lower fixture, an upper fixture, a fixing plate, a loading sleeve, a sleeve limit plate and a guide
beam;
a pair of side guard plates are disposed vertically, and fixedly connected to an upper end of
the bottom plate at intervals left and right;
the lower fixture is composed of a pair of single L-shaped fixtures A that are disposed oppositely; the single L-shaped fixture A is disposed between the pair of side guard plates, lower ends of vertical sections of the pair of single L-shaped fixtures A fixedly connected to an upper end of the bottom plate, and horizontal sections of the pair of single L-shaped fixtures A are disposed close to each other; the upper fixture is disposed above the lower fixture, and mainly composed of a connecting beam that is disposed horizontally, a cylindrical beam that is disposed vertically and a pair of single L-shaped fixtures B that are disposed oppositely; horizontal sections of the pair of single
L-shaped fixtures B are disposed close to each other, and close to the lower fixture, and vertical
sections of the pair of single L-shaped fixtures B are fixedly connected to left and right ends of
the connecting beam respectively; a lower end of the cylindrical beam is fixedly connected to a
center of an upper end of the connecting beam, and an outer side of the cylindrical beam is
provided with an outer thread;
a pair of fixing plates are disposed at inner sides of upper ends of the pair of side guard
plates correspondingly, outer ends of the pair of fixing plates are fixedly connected to the upper
ends of the pair of side guard plates respectively, and inner ends of the pair of fixing plates extend
close to each other and remain a gap;
the motor is disposed above and between the pair of fixing plates, a left portion and a right
portion of a base of the motor are fixedly connected to the inner ends of the pair of fixing plates
respectively, and an output shaft of the motor extends from the gap between the pair of fixing
plates to below the pair of fixing plates;
an axis of an upper portion of the loading sleeve is opened with a mounting hole, and fixedly
sleeved outside the output shaft of the motor through the mounting hole; an axis of a lower
portion of the loading sleeve is opened with an inner thread hole, and sleeved outside the upper
portion of the cylindrical beam through thread fitting; an outer side of a middle portion of the
loading sleeve is opened with an annular groove;
a pair of sleeve limit plates are disposed horizontally above the upper fixture, and inner ends
of the pair of sleeve limit plates are curved to fit the annular groove and extend into the annular
groove from left and right sides respectively and enclose outside the annular groove; outer ends of
the pair of sleeve limit plates are fixedly connected to inner sides of upper portions of the pair of side guard plates respectively; the guide beam is disposed horizontally at one side outside the upper fixture, an inner end thereof is fixedly connected to an outer side of the single L-shaped fixture B at one side, and an outer end thereof is in clearance fit with a gap of an inner side of the side guard plate at the corresponding side; front and rear sides of the side guard plate close to the guide beam are fixedly connected to the pair of guide limit plates; a slide path for the guide beam to slide horizontally is formed between inner sides of the pair of guide limit plates to avoid a situation that the upper fixture rotates around the cylindrical beam during horizontal movement; the inner side of the side guard plate close to the guide beam is further fixedly connected to a pair of limit blocks, which are used to limit upward and downward movements of the guide beam respectively.
Preferably, the mounting hole is a square hole, and a cross section of the output shaft of the
motor has a square shape matching the mounting hole.
Further, in order to change the position of the limit block for facilitating horizontal stroke of
the upper fixture; the limit block is a limit bolt, the limit bolt is fixedly inserted into the inner side
of the side guard plate through a bolt hole disposed on the side guard plate, and the bolt hole has a
plurality of holes and the holes are sequentially distributed along a length direction of the slide
path.
Preferably, the bottom plate is made of steel plate, and a round hole is formed on each of left
and right sides of the bottom plate.
Preferably, the side guard plate is made of steel plate, a width of the side guard plate is
consistent with a width of the bottom plate, and a front end and a rear end thereof are disposed
flush.
Preferably, both the single L-shaped fixture A and the single L-shaped fixture B are made of
bent steel bars.
Preferably, both the sleeve limit plate and the fixing plate are made of steel plate.
In the utility model, by providing the lower fixture with a pair of single L-shaped fixtures A,
the upper fixture with a pair of single L-shaped fixtures B, and disposing horizontal sections of
the single L-shaped fixtures A and the single L-shaped fixtures B to be close to each other, a clamping structure for limiting a testing sample may be formed between the upper fixture and the lower fixture, so that upper and lower ends of the I-shaped testing sample are easy to be limited, thereby stretching longitudinally the testing sample through the longitudinal movement of the upper fixture. The loading sleeve cooperates with the cylindrical beam through the thread structure to drive the cylindrical beam to move up or down during the rotation process, which in turn drives the upper fixture to move longitudinally; the cooperation between the inner end of the sleeve limit plate and the annular groove of the loading sleeve may limit the loading sleeve only to rotate radially and not to move longitudinally, so that the upper fixture may be facilitated to move longitudinally under the drive of the motor. The device is simple in structure, compact in size, light in weight, low in manufacturing cost, and easy to operate.
Brief Description of Drawings
Fig. 1 is a structure diagram of the utility model;
Fig. 2 is a left side view of Fig. 1.
In the drawings: 1 bottom plate; 2 side guard plate; 3 lower fixture; 4 upper fixture; 5 loading
sleeve; 6 sleeve limit plate; 7 motor; 8 fixing plate; 9 guide beam; 10 single L-shaped fixture A;
11 connecting beam; 12 cylindrical beam; 13 single L-shaped fixture B; 14 mounting hole; 15
inner thread hole; 16 annular groove; 17 guide limit plate; 18 limit block; 19 round hole; 20
testing sample.
Detail Description
The utility model will be further elaborated hereafter.
As shown in Figs. 1 and 2, a device for testing elastic recovery rate of building sealing
material includes a bottom plate 1, a motor 7, a side guard plate 2, a lower fixture 3, an upper
fixture 4, a fixing plate 8, a loading sleeve 5, a sleeve limit plate 6 and a guide beam 9;
a pair of side guard plates 2 are disposed vertically, and fixedly connected to an upper end of
the bottom plate 1 at intervals left and right;
the lower fixture 3 is composed of a pair of single L-shaped fixtures A10 that are disposed
oppositely; the single L-shaped fixture A10 is disposed between the pair of side guard plates 2, lower ends of vertical sections of the pair of single L-shaped fixtures AlO fixedly connected to an upper end of the bottom plate 1, and horizontal sections of the pair of single L-shaped fixtures
AlO are disposed close to each other;
the upper fixture 4 is disposed above the lower fixture 3, and mainly composed of a
connecting beam 11 that is disposed horizontally, a cylindrical beam 12 that is disposed vertically
and a pair of single L-shaped fixtures B13 that are disposed oppositely; horizontal sections of the
pair of single L-shaped fixtures B13 are disposed close to each other, and close to the lower
fixture 3, and vertical sections of the pair of single L-shaped fixtures B13 are fixedly connected to
left and right ends of the connecting beam 11 respectively; a lower end of the cylindrical beam 12
is fixedly connected to a center of an upper end of the connecting beam 11, and an outer side of
the cylindrical beam 12 is provided with an outer thread;
preferably, the shape and size of the single L-shaped fixture B13 are the same as the single
L-shaped fixture A10.
a pair of fixing plates 8 are disposed at inner sides of upper ends of the pair of side guard
plates 2 correspondingly, outer ends of the pair of fixing plates 8 are fixedly connected to the
upper ends of the pair of side guard plates 2 respectively, and inner ends of the pair of fixing
plates 8 extend close to each other and remain a gap;
preferably, the motor 7 is a DC motor and is powered by a DC power supply; the motor 7 is
disposed above and between the pair of fixing plates 8, a left portion and a right portion of a base
of the motor 7 are fixedly connected to the inner ends of the pair of fixing plates 8 respectively, an
output shaft of the motor 7 is disposed vertically and the output shaft of the motor 7 extends from
the gap between the pair of fixing plates 8 to below the pair of fixing plates 8;
an axis of an upper portion of the loading sleeve 5 is opened with a mounting hole 14, and
fixedly sleeved outside the output shaft of the motor 7 through the mounting hole 14; an axis of a
lower portion of the loading sleeve 5 is opened with an inner thread hole 15, and sleeved outside
the upper portion of the cylindrical beam 12 through thread fitting; an outer side of a middle
portion of the loading sleeve 5 is opened with an annular groove 16;
a pair of sleeve limit plates 6 are disposed horizontally above the upper fixture 4, and inner ends of the pair of sleeve limit plates 6 are curved to fit the annular groove 16 and extend into the annular groove 16 from left and right sides respectively and enclose outside the annular groove
16; outer ends of the pair of sleeve limit plates 6 are fixedly connected to inner sides of upper
portions of the pair of side guard plates 2 respectively;
the guide beam 9 is disposed horizontally at one side outside the upper fixture 4, an inner
end thereof is fixedly connected to an outer side of the single L-shaped fixture B13 at one side,
and an outer end thereof is in clearance fit with a gap of an inner side of the side guard plate 2 at
the corresponding side; front and rear sides of the side guard plate 2 close to the guide beam 9 are
fixedly connected to the pair of guide limit plates 17; a slide path for the guide beam 9 to slide
horizontally is formed between inner sides of the pair of guide limit plates 17 to avoid a situation
that the upper fixture 4 rotates around the cylindrical beam 12 during horizontal movement; the
inner side of the side guard plate 2 close to the guide beam 9 is further fixedly connected to a pair
of limit blocks 18, and the pair of the limit blocks 18 are located at upper and lower ends of the
slide path respectively to limit upward and downward movements of the guide beam 9
respectively.
Preferably, the mounting hole 14 is a square hole, and a cross section of the output shaft of
the motor 7 has a square shape matching the mounting hole 14.
In order to change the position of the limit block for facilitating horizontal stroke of the
upper fixture; the limit block 18 is a limit bolt, the limit bolt is fixedly inserted into the inner side
of the side guard plate 2 through a bolt hole disposed on the side guard plate 2, and the bolt hole
has a plurality of holes and the holes are sequentially distributed along a length direction of the
slide path. A moving distance of the cylindrical beam 12 in the inner thread hole 15 of the loading
sleeve 5 is greater than a distance between the pair of limit blocks 18, i.e., greater than a
longitudinal stroke of the upper fixture 4.
Preferably, the bottom plate 1 is made of steel plate, and a round hole 19 is formed on each
of left and right sides of the bottom plate 1. The provision of the round hole 19 may facilitate the
fixed connection between the bottom plate 1 and a working platform.
Preferably, the side guard plate 2 is made of steel plate, a width of the side guard plate 2 is
consistent with a width of the bottom plate 1, and a front end and a rear end thereof are disposed flush.
Preferably, both the single L-shaped fixture A10 and the single L-shaped fixture B13 are
made of bent steel bars.
Preferably, both the sleeve limit plate 6 and the fixing plate 8 are made of steel plate.
In order to realize automatic control, the device further includes a PLC controller and a
control cabinet. Sides of the limit blocks 18 close to the guide beam 9 are mounted with proximity
switches, and the PLC controller is connected to the control cabinet, the proximity switches on the
pair of limit blocks 18 and the motor 7 respectively. The control cabinet is provided with a button
A for controlling the motor 7 to rotate forward, a button B for controlling the motor 7 to rotate
reversibly, and the button A and the button B are used to send forward rotation and reverse
rotation signals to the PLC controller respectively. The proximity switch of the limit block 18 on
the upper side is used to send an in-place electrical signal A when being touched with an end of
the guide beam 9, and the proximity switch of the limit block 18 on the lower side is used to send
an in-place electrical signal B when being touched with an end of the guide beam 9. After
receiving the forward rotation signal and the reverse rotation signal, the PLC controller controls
the forward rotation and reverse rotation of the motor 7 respectively, and controls the motor 7 to
stop rotating when receiving the electrical signal A and the electrical signal B.
Working principle:
After the motor 7 is energized, the loading sleeve 5 is driven to rotate at a fixed speed, and
due to the effect of the sleeve limit plate 6, the loading sleeve 5 may only perform radial rotation
and may not move longitudinally, so that the upper fixture 4 may be controlled to move up and
down by means of thread fitting, forward rotation and reverse placement. Due to the limiting
effect of the pair of guide limit plates 17 on the guide beam 9, the guide beam 9 may only move
longitudinally without rotating, so that the upper fixture 4 may only move longitudinally without
rotating around the cylindrical beam 12.
When in operation, first, the motor 7 drives the upper fixture 4 to move downward; when the
guide beam 9 of the upper fixture 4 touches the lowermost limit block 18, the motor 7 is
controlled to stop working; then, the sizes of the upper fixture 4 and the lower fixture 3 match the size of the testing sample 20, and the testing sample 20 between the upper fixture 4 and the lower fixture 3 and the horizontal sections of the upper fixture 4 and the lower fixture 3 to limit the upper and lower ends of the testing sample 20. According to the amount of tensile deformation required for the elastic recovery rate of the testing sample 20, and the limit block 18 is mounting at the corresponding position of the side guard plate 2; then, the motor 7 is initiated to drive the upper fixture 4 to move upward, and when the guide beam 9 touches the limit block 18, the motor
7 is controlled to stop working. A block pad is arranged between the upper and lower substrates of
the testing sample 20, and then the motor 7 is initiated, so that the upper fixture 4 moves down to
the initial position; then, the testing sample 20 is taken out, followed by completing the follow-up
work of the elastic recovery rate testing according to the requirements of GB/T13477.17-2017.
In the claims which follow and in the preceding description of the invention, except where
the context requires otherwise due to express language or necessary implication, the word
"comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to
specify the presence of the stated features but not to preclude the presence or addition of further
features in various embodiments of the invention.
Claims (7)
1. A device for testing elastic recovery rate of building sealing material, comprising a bottom
plate and a motor, wherein the device further comprises a side guard plate, a lower fixture, an
upper fixture, a fixing plate, a loading sleeve, a sleeve limit plate and a guide beam;
a pair of side guard plates are disposed vertically, and fixedly connected to an upper end of
the bottom plate at intervals left and right;
the lower fixture is composed of a pair of single L-shaped fixtures A that are disposed
oppositely; the single L-shaped fixture A is disposed between the pair of side guard plates, lower
ends of vertical sections of the pair of single L-shaped fixtures A fixedly connected to an upper
end of the bottom plate, and horizontal sections of the pair of single L-shaped fixtures A are
disposed close to each other;
the upper fixture is disposed above the lower fixture, and mainly composed of a connecting
beam that is disposed horizontally, a cylindrical beam that is disposed vertically and a pair of
single L-shaped fixtures B that are disposed oppositely; horizontal sections of the pair of single
L-shaped fixtures B are disposed close to each other, and close to the lower fixture, and vertical
sections of the pair of single L-shaped fixtures B are fixedly connected to left and right ends of
the connecting beam respectively; a lower end of the cylindrical beam is fixedly connected to a
center of an upper end of the connecting beam, and an outer side of the cylindrical beam is
provided with an outer thread;
a pair of fixing plates are disposed at inner sides of upper ends of the pair of side guard
plates correspondingly, outer ends of the pair of fixing plates are fixedly connected to the upper
ends of the pair of side guard plates respectively, and inner ends of the pair of fixing plates extend
close to each other and remain a gap;
the motor is disposed above and between the pair of fixing plates, a left portion and a right
portion of a base of the motor are fixedly connected to the inner ends of the pair of fixing plates
respectively, and an output shaft of the motor extends from the gap between the pair of fixing
plates to below the pair of fixing plates;
an axis of an upper portion of the loading sleeve is opened with a mounting hole, and fixedly sleeved outside the output shaft of the motor through the mounting hole; an axis of a lower portion of the loading sleeve is opened with an inner thread hole, and sleeved outside the upper portion of the cylindrical beam through thread fitting; an outer side of a middle portion of the loading sleeve is opened with an annular groove; a pair of sleeve limit plates are disposed horizontally above the upper fixture, and inner ends of the pair of sleeve limit plates are curved to fit the annular groove and extend into the annular groove from left and right sides respectively and enclose outside the annular groove; outer ends of the pair of sleeve limit plates are fixedly connected to inner sides of upper portions of the pair of side guard plates respectively; the guide beam is disposed horizontally at one side outside the upper fixture, an inner end thereof is fixedly connected to an outer side of the single L-shaped fixture B at one side, and an outer end thereof is in clearance fit with a gap of an inner side of the side guard plate at the corresponding side; front and rear sides of the side guard plate close to the guide beam are fixedly connected to the pair of guide limit plates; a slide path for the guide beam to slide horizontally is formed between inner sides of the pair of guide limit plates to avoid a situation that the upper fixture rotates around the cylindrical beam during horizontal movement; the inner side of the side guard plate close to the guide beam is further fixedly connected to a pair of limit blocks, which are used to limit upward and downward movements of the guide beam respectively.
2. The device for testing elastic recovery rate of building sealing material according to claim
1, wherein the mounting hole is a square hole, and a cross section of the output shaft of the motor
has a square shape matching the mounting hole.
3. The device for testing elastic recovery rate of building sealing material according to claim
1 or 2, wherein the limit block is a limit bolt, the limit bolt is fixedly inserted into the inner side of
the side guard plate through a bolt hole disposed on the side guard plate, and the bolt hole has a
plurality of holes and the holes are sequentially distributed along a length direction of the slide
path.
4. The device for testing elastic recovery rate of building sealing material according to claim
3, wherein the bottom plate is made of steel plate, and a round hole is formed on each of left and
right sides of the bottom plate.
5. The device for testing elastic recovery rate of building sealing material according to claim
4, wherein the side guard plate is made of steel plate, a width of the side guard plate is consistent
with a width of the bottom plate, and a front end and a rear end thereof are disposed flush.
6. The device for testing elastic recovery rate of building sealing material according to claim
, wherein both the single L-shaped fixture A and the single L-shaped fixture B are made of bent
steel bars.
7. The device for testing elastic recovery rate of building sealing material according to claim
6, wherein both the sleeve limit plate and the fixing plate are made of steel plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020107315991 | 2020-07-27 | ||
| CN202010731599.1A CN111948045A (en) | 2020-07-27 | 2020-07-27 | Building sealing material elasticity recovery rate testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020101599A4 true AU2020101599A4 (en) | 2020-09-10 |
Family
ID=72333622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020101599A Ceased AU2020101599A4 (en) | 2020-07-27 | 2020-07-31 | Device for testing elastic recovery rate of building sealing material |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111948045A (en) |
| AU (1) | AU2020101599A4 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340726A (en) * | 2021-05-21 | 2021-09-03 | 白会林 | Static rigidity test detection device for rubber bushing |
| CN113865813A (en) * | 2021-10-21 | 2021-12-31 | 惠州市盘石科技有限公司 | Online testing device and testing method for elasticity of bent elastic sheet |
| CN115060573A (en) * | 2022-05-17 | 2022-09-16 | 石家庄铁道大学 | Loading test device and test method for hogging moment area of steel plate combination beam |
| CN115615829A (en) * | 2022-11-01 | 2023-01-17 | 华鑫新材料科技(江苏)有限公司 | Strength testing equipment based on optical fiber steel wire |
-
2020
- 2020-07-27 CN CN202010731599.1A patent/CN111948045A/en not_active Withdrawn
- 2020-07-31 AU AU2020101599A patent/AU2020101599A4/en not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340726A (en) * | 2021-05-21 | 2021-09-03 | 白会林 | Static rigidity test detection device for rubber bushing |
| CN113340726B (en) * | 2021-05-21 | 2023-12-15 | 江苏科乐普汽车零部件有限公司 | Static steel degree test detection device for rubber bushing |
| CN113865813A (en) * | 2021-10-21 | 2021-12-31 | 惠州市盘石科技有限公司 | Online testing device and testing method for elasticity of bent elastic sheet |
| CN113865813B (en) * | 2021-10-21 | 2023-12-15 | 惠州市盘石科技有限公司 | Online testing equipment and method for elasticity of bending elastic sheet |
| CN115060573A (en) * | 2022-05-17 | 2022-09-16 | 石家庄铁道大学 | Loading test device and test method for hogging moment area of steel plate combination beam |
| CN115060573B (en) * | 2022-05-17 | 2023-05-16 | 石家庄铁道大学 | Loading test device and method for hogging moment area of steel plate composite beam |
| CN115615829A (en) * | 2022-11-01 | 2023-01-17 | 华鑫新材料科技(江苏)有限公司 | Strength testing equipment based on optical fiber steel wire |
| CN115615829B (en) * | 2022-11-01 | 2023-08-15 | 华鑫新材料科技(江苏)有限公司 | Intensity test equipment based on optical fiber steel wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111948045A (en) | 2020-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |