CN111458205A - Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof - Google Patents
Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof Download PDFInfo
- Publication number
- CN111458205A CN111458205A CN202010446372.2A CN202010446372A CN111458205A CN 111458205 A CN111458205 A CN 111458205A CN 202010446372 A CN202010446372 A CN 202010446372A CN 111458205 A CN111458205 A CN 111458205A
- Authority
- CN
- China
- Prior art keywords
- sample
- asphalt
- mold
- plate
- push rod
- 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
- 239000010426 asphalt Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005452 bending Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000000670 limiting effect Effects 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 3
- 238000005191 phase separation Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 230000008569 process Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the field of demoulding equipment, and discloses a sample demoulding instrument for measuring bending creep stiffness of asphalt and a demoulding method thereof, wherein the demoulding instrument comprises: a base; the base is longitudinally provided with a left supporting rod and a right supporting rod; a fixing plate is arranged between the left supporting rod and the right supporting rod, and the upper end of the fixing plate is provided with a clamping groove which is matched with a bottom plate of the sample mold; a first driving mechanism is arranged on the right supporting rod and used for separating a bottom plate of the sample mold from a side plate of the sample mold; a top plate is arranged at the upper end of the left supporting rod, sample holes are respectively and correspondingly formed in the top plate and the fixing plate, and a second driving mechanism is arranged on the base and used for separating a side plate of the sample mold from an asphalt sample in the sample mold; the manual work is replaced by machinery, the force is controllable and uniform, the operation is less affected by low temperature, the demolding efficiency is high, and the damage to the asphalt sample is small; the demolding method is simple, easy to operate and implement, safe and reliable.
Description
Technical Field
The invention relates to the field of demolding equipment, in particular to a sample demolding instrument for determining bending creep stiffness of asphalt and a demolding method thereof.
Background
Asphalt flexural creep stiffness determination (BBR) experiments are important measures of asphalt low temperature performance. At present, a BBR sample mold consists of a bottom plate, two side plates and two end plugs, liquid asphalt is poured into the assembled BBR sample mold during sample preparation, the BBR sample mold is cooled for 30-40 min and then is strickled off, and then the BBR sample mold is placed into a refrigerator to be cooled for a certain time at the temperature of 5 ℃ and then is demoulded. Because asphalt has certain viscosity, the asphalt and a sample mold can be stuck together, the sample mold is pushed away by hands in the traditional method, and the manual demolding has the following defects due to the characteristics of the asphalt: 1) when manual demoulding is carried out, the stress of an asphalt test piece is uneven, twisting and even bending can occur, so that a trabecular test piece is bent, the structure is damaged, and certain experimental error is caused; 2) after the asphalt test piece is bent, the test is carried out again, so that the test material is wasted, and unnecessary test expenses are increased; 3) when the high-viscosity asphalt sample is demoulded, the adhesion between the asphalt and the sample grinding tool is very high, great strength is required, and a great deal of time and energy are also spent; 4) the manual demoulding needs to take the formed asphalt sample out of the refrigerator for demoulding, the manual demoulding temperature is low, discomfort is easy to generate, and the influence of the temperature on the asphalt sample is easy to cause.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a sample demoulding instrument for measuring bending creep stiffness of asphalt and a demoulding method thereof, wherein the demoulding instrument solves the problems of difficult operation, too hard long-time operation, uneven stress of an asphalt sample and the like of the existing manual demoulding, adopts machinery to replace manual work, has controllable and uniform force application, small low-temperature influence degree on operation, high demoulding efficiency and small damage to the asphalt sample; the demolding method is simple, easy to operate and implement, safe and reliable.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A sample demould apparatus for determining bending creep stiffness of asphalt comprises: a base; wherein, a left support rod and a right support rod are respectively and longitudinally arranged on two sides of the base; a fixing plate is transversely arranged between the left supporting rod and the right supporting rod, a clamping groove is formed in the upper end of the fixing plate, and the clamping groove is matched with a bottom plate of the sample mold;
a first driving mechanism is arranged above the fixed plate on the right supporting rod and used for separating a bottom plate of the sample mold from a side plate of the sample mold;
the upper end of left branch vaulting pole transversely is provided with the roof, the roof with the sample hole has been seted up to corresponding respectively on the fixed plate, the position relative with the sample hole on the base is provided with second actuating mechanism, second actuating mechanism is used for making the curb plate of sample mould and the pitch sample phase separation in the sample mould.
Preferably, the first driving mechanism comprises a first electric push rod and a first push block; the push rod of the first electric push rod is fixedly connected with a first push block, the first electric push rod is fixed on the right support rod, and the left end face of the first push block is the same as the side plate of the sample mold in size; the first electric push rod pushes the first push block to move transversely along the upper end of the fixing plate.
Preferably, the second driving mechanism comprises a second electric push rod and a second push block; the push rod of the second electric push rod is fixedly connected with the second push block, the second electric push rod is fixed on the base, the upper end face of the second push block is the same as the size of the asphalt sample in the sample mold, and the second electric push rod pushes the second push block to move longitudinally.
Preferably, the size of the sample hole is the same as the size of the asphalt sample in the sample mold, and the distance between the top plate and the fixing plate is the same as the height of the asphalt sample.
Preferably, the distance between the rightmost end of the left support rod 2 and the leftmost end of the sample hole is the same as the thickness of the side plate of the sample mold.
Preferably, the push rod further comprises a displacement sensor, the displacement sensor is arranged on the first push block, and a signal output end of the displacement sensor is electrically connected with a control end of the second electric push rod.
Preferably, the upper ends of the clamping groove and the fixing plate are respectively coated with a lubricant.
Further preferably, the lubricant is talc.
(II) a method for demoulding a sample for measuring the bending creep stiffness of asphalt, which comprises the following steps:
and 3, opening a power switch of the second driving mechanism, enabling the second driving mechanism to penetrate through the sample hole in the fixing plate and longitudinally push the asphalt sample to enable the asphalt sample to penetrate out of the sample hole in the top plate, and enabling the side plate of the sample mold to be retained in the groove between the top plate and the fixing plate under the limiting action of the top plate and the fixing plate, so that the side plate of the sample mold is separated from the asphalt sample.
Compared with the prior art, the invention has the beneficial effects that:
1) the sample demoulding instrument for measuring the bending creep stiffness of the asphalt adopts machinery to replace manpower, the force is controllable and uniform, and the operation is less influenced by low temperature; an experimenter can directly place the demolding instrument in a refrigerator environment, so that the deformation capacity of an asphalt sample is reduced, the influence of deformation caused by uneven stress during demolding due to adhesion between the asphalt sample and a sample mold is avoided, and the demolding instrument is safer and labor-saving.
2) The clamping groove is matched with a bottom plate of a sample mould by a BBR method, and the separation of a side plate of the sample mould from the bottom plate can be completed under the action of the first electric push rod; roof, left branch vaulting pole, first ejector pad and fixed plate constitute spacing recess, and it is ejecting from the sample hole on the roof with pitch sample through second electric putter to make the curb plate and the end plug of sample mould stay in spacing recess, thereby accomplish whole drawing of patterns process, convenient and fast, pitch sample atress is even.
3) The demoulding method provided by the invention is simple to operate, the stress of the asphalt sample in the demoulding process is uniform, the influence of temperature factors is small, the demoulding is convenient, the automation degree is high, and the time and the labor are saved.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic diagram showing a side view of a sample demould apparatus for measuring bending creep stiffness of asphalt according to the present invention;
FIG. 2a is a top view of the fixation plate of FIG. 1; FIG. 2b is a top view of the top plate of FIG. 1;
FIG. 3 is a schematic three-dimensional structure diagram of a BBR method sample mold.
In the above figures: 1, a base; 2, a left support rod; 201 a top plate; 3, a right supporting rod; 4 fixing the plate; 401 card slot; 402 a sample well; 5 a first electric push rod; 6, a first push block; 7 a second electric push rod; 8, a second push block; 9, a sample die; a bottom plate 901; 902 side plates; 903 end plugs.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Referring to FIGS. 1-3, a sample demould apparatus for determining bending creep stiffness of asphalt according to an embodiment of the present disclosure comprises: a base 1; wherein, a left support rod 2 and a right support rod 3 are respectively and longitudinally arranged at two sides of the base 1; a fixing plate 4 is transversely arranged between the left supporting rod 2 and the right supporting rod 3, a clamping groove 401 is formed in the upper end of the fixing plate 4, and the clamping groove 401 is matched with a bottom plate 901 of the sample mold 9; a first driving mechanism is arranged above the fixed plate 4 on the right support rod 3 and is used for separating a bottom plate 901 of the sample mold 9 from a side plate 902 of the sample mold 9; the upper end of the left support rod 2 is transversely provided with a top plate 201, the top plate 201 and the fixing plate 4 are respectively and correspondingly provided with a sample hole 402, a second driving mechanism is arranged at a position on the base 1 opposite to the sample hole 402, and the second driving mechanism is used for separating a side plate 902 of the sample mold 9 from an asphalt sample in the sample mold 9.
In the above embodiment, as shown in fig. 3, the sample mold 9 is composed of a bottom plate 901, two side plates 902, and two end plugs 903; the two side plates 902 and the two end plugs 903 form a rectangular frame in the upper end of the bottom plate 901, the end plugs 903 and the side plates 902 are fixed on the bottom plate 901 by using rubber bands on one side close to the end plugs 903, the asphalt sample is injected into the sample mold 9 after the sample mold 9 is assembled, the rubber bands are removed after the asphalt sample is molded, and demolding treatment is carried out on the molded asphalt sample. The specific demolding process comprises the following steps: assembling the bottom plate 901 of the sample mold 9 equipped with the asphalt sample into the clamping groove 401 on the fixing plate 4, opening a power switch of the first driving mechanism, moving the upper part of the sample mold 9 (i.e. the part of the sample mold 9 equipped with the asphalt sample except the sample bottom plate 901) leftwards along the upper end of the fixing plate 4 and leftwards out of the clamping groove 401 by the first driving mechanism, and simultaneously clamping the bottom plate 901 of the sample mold 9 into the clamping groove 401, thereby completing the separation of the side plate 902 of the sample mold 9 from the asphalt sample in the sample mold 9; the upper portion of the sample mold 9 continues to be pushed leftward by the first driving mechanism until the asphalt sample is aligned with the sample hole 402 of the fixing plate 4 and does not fall out of the sample hole 402 of the fixing plate 4, and the power switch of the first driving mechanism is turned off. And opening a power switch of a second driving mechanism, wherein the second driving mechanism penetrates through the sample hole 402 on the fixing plate 4 and longitudinally pushes the asphalt sample to enable the asphalt sample to penetrate out of the sample hole 402 of the top plate 201, the left support rod 2 and the fixing plate 4 form a limiting groove, and two side plates 902 and two end plugs 903 of the sample mold 9 are left in the limiting groove, so that the demolding process of the asphalt sample is completed.
Referring to fig. 1, according to one embodiment of the present invention, the first driving mechanism includes a first electric push rod 5 and a first push block 6; the push rod of the first electric push rod 5 is fixedly connected with a first push block 6, the first electric push rod 5 is fixed on the right support rod 3, and the left end face of the first push block 6 is the same as the side plate 902 of the sample mold 9 in size; the first electric push rod 5 pushes the first push block 6 to move transversely along the upper end of the fixed plate 4.
In the above embodiment, the first electric push rod 5 can drive the first push block 6 to move horizontally, so that the upper portion of the sample mold 9 can be separated from the bottom plate 901 of the sample mold 9, and the left end surface of the first push block 6 is the same as the right side plate 902 of the sample mold 9, so as to ensure that the sample mold 9 is stressed uniformly in the process of moving left.
Referring to fig. 1, according to an embodiment of the present invention, the second driving mechanism includes a second electric push rod 7 and a second push block 8; the push rod of the second electric push rod 7 is fixedly connected with the second push block 8, the second electric push rod 7 is fixed on the base 1, the upper end face of the second push block 8 is the same as the size of the asphalt sample in the sample mold 9, and the second electric push rod 7 pushes the second push block 8 to move longitudinally.
In the above embodiment, the second electric push rod 7 can push the second push block 8 to move up and down, the second push block 8 passes through the sample hole 402 on the fixing plate 4 to contact the asphalt sample on the upper part of the sample mold 9, and pushes the asphalt sample out of the fixing hole on the top plate 201, thereby completing the separation of the side plate 902 of the sample mold 9 from the asphalt sample; and the upper portion of the sample mold 9 can be firmly fixed in the groove enclosed by the left supporting rod 2, the top plate 201, the first push block 6 and the fixing plate 4, so that the asphalt sample can be conveniently demoulded. The upper end face of the second push block 8 is the same as the bottom end face of the asphalt sample in the sample mold 9, so that the asphalt sample cannot deform due to the force of the limiting effect in the rising process.
Referring to fig. 1-2, according to one embodiment of the present invention, the size of the sample hole 402 is the same as the size of the asphalt sample in the sample mold 9, and the distance between the top plate 201 and the fixed plate 4 is the same as the height of the asphalt sample.
In the above embodiment, the sample holes 402 on the fixed plate 4 and the top plate 201 are both rectangular holes, and the shape and the cross-sectional area of the sample hole 402 are the same as those of the asphalt sample, so that the second push block 8 can smoothly pass through the sample hole 402 on the fixed plate 4, and the asphalt sample can smoothly pass through the sample hole 402 on the top plate 201, and it is ensured that the side plate 902 and the end plug 903 of the sample mold 9 can be blocked in the limiting groove by the sample hole 402 on the top plate 201. The distance between the top plate 201 and the fixing plate 4 is the same as the height of the asphalt sample, so that the two side plates 902 and the two end plugs 903 of the sample mold 9 are just clamped in the limiting grooves.
According to an embodiment of the present invention, the distance between the rightmost end of the left support bar 2 and the leftmost end of the sample hole 402 is the same as the thickness of the side plate 902 of the sample mold 9.
In the above embodiment, the distance between the rightmost end of the left support rod 2 and the leftmost end of the sample hole 402 is the same as the thickness of the side plate 902 of the sample mold 9, and when the left side plate 902 of the sample mold 9 is pressed against the left support rod 2 under the action of the first electric push rod 5, the asphalt sample is exactly aligned with the sample hole 402 on the fixed plate 4 and the top plate 201, so that the complete asphalt sample is conveniently separated from the side plate 902 of the sample mold 9.
According to an embodiment of the present invention, the push rod further comprises a displacement sensor, the displacement sensor is disposed on the first push block 6, and a signal output end of the displacement sensor is electrically connected to a control end of the second electric push rod 7.
In the above embodiment, the lateral movement distance of the first push block 6 is obtained through the displacement sensor, and then the upper portion of the sample mold 9 can be pushed laterally to the set position (the set position can be the position of the upper portion of the sample mold 9 when the asphalt sample is just aligned with the sample holes 402 on the fixed plate 4 and the top plate 201), and then the first electric push rod 5 can be controlled to stop working, and the second electric push rod 7 is enabled to start working, so that the automatic control is realized, and the demolding is convenient and fast.
(II) a method for demoulding a sample for measuring the bending creep stiffness of asphalt, which comprises the following steps:
And 3, continuously pushing the side plate of the sample mold and the asphalt sample in the sample mold to continuously move leftwards through the first electric push rod until the right side plate of the sample mold is propped against the left support rod, aligning the asphalt sample with the sample holes of the top plate and the fixed plate at the moment, and closing a power switch of the first electric push rod.
And 4, turning on a power switch of the second electric push rod, pushing the second push block to move upwards by the second electric push rod, enabling the second push block to penetrate through the sample hole in the fixing plate and to be in contact with the asphalt sample, then pushing the asphalt sample to penetrate through the sample hole in the top plate, and reserving the side plate of the sample mold in a groove between the top plate, the left support rod and the fixing plate, so that the side plate of the sample mold is separated from the asphalt sample, and the whole demolding process is completed.
After the drawing of patterns is accomplished, take off the pitch sample to get back to initial position with first ejector pad, second ejector pad respectively through first electric putter and second electric putter, simultaneously, take off bottom plate, curb plate and the end plug of sample mould, conveniently carry out the drawing of patterns of next sample.
Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A sample demould instrument for measuring bending creep stiffness of asphalt is characterized by comprising: a base (1); wherein, a left support rod (2) and a right support rod (3) are respectively and longitudinally arranged on two sides of the base (1); a fixing plate (4) is transversely arranged between the left supporting rod (2) and the right supporting rod (3), a clamping groove (401) is formed in the upper end of the fixing plate (4), and the clamping groove (401) is matched with a bottom plate (901) of the sample mold (9);
a first driving mechanism is arranged above the fixing plate (4) on the right supporting rod (3), and is used for separating a bottom plate (901) of the sample mold (9) from a side plate (902) of the sample mold (9);
the upper end of left branch vaulting pole (2) transversely is provided with roof (201), roof (201) with sample hole (402) have been seted up to corresponding respectively on fixed plate (4), the position relative with sample hole (402) on base (1) is provided with second actuating mechanism, second actuating mechanism is used for making curb plate (902) of sample mould (9) and the pitch sample phase separation in sample mould (9).
2. The sample demolder for asphalt bending creep stiffness determination according to claim 1, wherein the first driving mechanism comprises a first electric push rod (5) and a first push block (6); the push rod of the first electric push rod (5) is fixedly connected with a first push block (6), the first electric push rod (5) is fixed on the right support rod (3), and the left end face of the first push block (6) is the same as the side plate (902) of the sample mold (9) in size; the first electric push rod (5) pushes the first push block (6) to move transversely along the upper end of the fixing plate (4).
3. The sample demould apparatus for determining bending creep stiffness of asphalt according to claim 2, wherein the second driving mechanism comprises a second electric push rod (7) and a second push block (8); the push rod of the second electric push rod (7) is fixedly connected with the second push block (8), the second electric push rod (7) is fixed on the base (1), the upper end face of the second push block (8) is the same as the size of the asphalt sample in the sample mold (9), and the second electric push rod (7) pushes the second push block (8) to move longitudinally.
4. Sample demould instrument for determining bending creep stiffness of asphalt according to claim 1, wherein the size of the sample hole (402) is the same as the size of the asphalt sample in the sample mould (9), and the distance between the top plate (201) and the fixed plate (4) is the same as the height of the asphalt sample.
5. The sample demould apparatus for determining bending creep stiffness of asphalt according to claim 1, wherein a distance between a rightmost end of the left support bar (2) and a leftmost end of the sample hole (402) is the same as a thickness of a side plate (902) of the sample die (9).
6. The sample de-molding apparatus for measuring bending creep stiffness of asphalt according to claim 3, further comprising a displacement sensor, wherein the displacement sensor is disposed on the first push block (6), and a signal output end of the displacement sensor is electrically connected to a control end of the second electric push rod (7).
7. The sample de-molding machine for measuring bending creep stiffness of asphalt according to claim 1, wherein the upper ends of the clamping groove (401) and the fixing plate (4) are coated with lubricant respectively.
8. A method for demoulding a test piece for measuring bending creep stiffness of asphalt, which is characterized by comprising the following steps:
step 1, assembling an asphalt sample in a sample mold, assembling a bottom plate of the sample mold assembled with the asphalt sample into a clamping groove on a fixed plate, opening a power switch of a first driving mechanism, pushing a side plate of the sample mold and the asphalt sample in the sample mold to move leftwards along the upper end of the fixed plate by the first driving mechanism, and fixing the bottom plate of the sample mold in the clamping groove under the limit of the clamping groove, so that the side plate of the sample mold is separated from the asphalt sample in the sample mold;
step 2, continuing to push the side plate of the sample mold and the asphalt sample in the sample mold to the left through the first driving mechanism until the asphalt sample is aligned with the sample hole on the fixing plate, and closing a power switch of the first driving mechanism;
and 3, opening a power switch of the second driving mechanism, enabling the second driving mechanism to penetrate through the sample hole in the fixing plate and longitudinally push the asphalt sample to enable the asphalt sample to penetrate out of the sample hole in the top plate, and enabling the side plate of the sample mold to be retained in the groove between the top plate and the fixing plate under the limiting action of the top plate and the fixing plate, so that the side plate of the sample mold is separated from the asphalt sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010446372.2A CN111458205A (en) | 2020-05-25 | 2020-05-25 | Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010446372.2A CN111458205A (en) | 2020-05-25 | 2020-05-25 | Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111458205A true CN111458205A (en) | 2020-07-28 |
Family
ID=71684783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010446372.2A Pending CN111458205A (en) | 2020-05-25 | 2020-05-25 | Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111458205A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002036221A (en) * | 2000-07-19 | 2002-02-05 | Makkusuton Kk | Structure of mold for molding concrete product |
| JP2005248608A (en) * | 2004-03-05 | 2005-09-15 | Home Kenzai Kk | Beating block and construction method of beating block |
| CN204924755U (en) * | 2015-09-09 | 2015-12-30 | 长安大学 | Bituminous mixture marshall test piece shedder |
| CN105424456A (en) * | 2015-12-02 | 2016-03-23 | 广东工业大学 | De-molding device for soil sample |
| CN105751365A (en) * | 2016-03-30 | 2016-07-13 | 广西众诚工程质量检测有限公司 | Mold releasing device for concrete impermeability test block |
| CN205749083U (en) * | 2016-01-28 | 2016-11-30 | 国家电网公司 | The cold inlaying device of novel metallographic specimen |
| CN109624048A (en) * | 2018-12-14 | 2019-04-16 | 河海大学 | A kind of concrete sample preparation demoulding integrated device and prepare release method |
| CN110261201A (en) * | 2019-07-17 | 2019-09-20 | 长沙理工大学 | Production, demoulding integrated apparatus and its method for making sample of soil sample |
-
2020
- 2020-05-25 CN CN202010446372.2A patent/CN111458205A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002036221A (en) * | 2000-07-19 | 2002-02-05 | Makkusuton Kk | Structure of mold for molding concrete product |
| JP2005248608A (en) * | 2004-03-05 | 2005-09-15 | Home Kenzai Kk | Beating block and construction method of beating block |
| CN204924755U (en) * | 2015-09-09 | 2015-12-30 | 长安大学 | Bituminous mixture marshall test piece shedder |
| CN105424456A (en) * | 2015-12-02 | 2016-03-23 | 广东工业大学 | De-molding device for soil sample |
| CN205749083U (en) * | 2016-01-28 | 2016-11-30 | 国家电网公司 | The cold inlaying device of novel metallographic specimen |
| CN105751365A (en) * | 2016-03-30 | 2016-07-13 | 广西众诚工程质量检测有限公司 | Mold releasing device for concrete impermeability test block |
| CN109624048A (en) * | 2018-12-14 | 2019-04-16 | 河海大学 | A kind of concrete sample preparation demoulding integrated device and prepare release method |
| CN110261201A (en) * | 2019-07-17 | 2019-09-20 | 长沙理工大学 | Production, demoulding integrated apparatus and its method for making sample of soil sample |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116728714B (en) | Rubber injection molding die | |
| CN111458205A (en) | Sample demolding instrument for determining bending creep stiffness of asphalt and demolding method thereof | |
| CN220497587U (en) | Quick demoulding mould | |
| CN209176112U (en) | One kind tracking into formula and ejects full-automatic stripper | |
| CN218928466U (en) | Antiseized structure of guide tool | |
| CN218139611U (en) | Die for medical pressure gauge connector | |
| CN212312665U (en) | Plastic part taking-out structure | |
| CN217346534U (en) | A off-line mould unloading frock for dismantling transfer forming die | |
| CN217373193U (en) | Mold frame accurate in positioning | |
| CN212945353U (en) | Collecting ring pressure injection mould | |
| CN219381414U (en) | Shoe mold for sole processing | |
| CN211165082U (en) | Rubber outlet mould convenient to take off material | |
| CN220274863U (en) | Silica gel mould convenient to jack-up | |
| CN214926611U (en) | Circuit breaker base injection mold with low manufacturing cost | |
| CN219486461U (en) | Auxiliary demoulding structure for injection mould for producing mobile phone rear cover | |
| CN217993356U (en) | Injection mold for forming ice cream cup bottleneck clamping piece | |
| CN210940301U (en) | Secondary demoulding structure for inclined hole of injection mould | |
| CN219855826U (en) | Material removing structure of automobile part injection mold | |
| CN209534047U (en) | A kind of injection mold fast demolding device | |
| CN217573865U (en) | A rotary die for producing B post plaque | |
| CN218342694U (en) | Binding post injection mold | |
| CN220517447U (en) | Injection mold capable of quickly replacing movable insert core block | |
| CN218615271U (en) | Resetting mechanism for injection mold | |
| CN213533638U (en) | Ejecting device | |
| CN218535018U (en) | Cement apron pouring mould |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200728 |