CN209784021U - forming device of bituminous mixture test piece - Google Patents

forming device of bituminous mixture test piece Download PDF

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Publication number
CN209784021U
CN209784021U CN201822196520.0U CN201822196520U CN209784021U CN 209784021 U CN209784021 U CN 209784021U CN 201822196520 U CN201822196520 U CN 201822196520U CN 209784021 U CN209784021 U CN 209784021U
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CN
China
Prior art keywords
test piece
asphalt mixture
mixture test
forming
mounting hole
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.)
Expired - Fee Related
Application number
CN201822196520.0U
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Chinese (zh)
Inventor
樊振通
王朝辉
张廉
舒诚
肖绪荡
问鹏辉
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Changan University
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Changan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN201822196520.0U priority Critical patent/CN209784021U/en
Application granted granted Critical
Publication of CN209784021U publication Critical patent/CN209784021U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a molding device of an asphalt mixture test piece, which comprises a molding die and a demolding device; the mounting hole is additionally formed in the bottom plate of the forming die, the sealing plug is arranged in the mounting hole, the forming column is arranged at the top of the sealing plug, and the mounting hole of the sensor is reserved when the asphalt mixture test piece is formed, so that the sensor mounting hole and the asphalt mixture test piece are formed together, the strength of the asphalt mixture test piece is ensured, the unrecoverable damage of the asphalt mixture test piece caused by subsequent processing is avoided, and the manufacturing procedures of the asphalt mixture test piece are reduced; and meanwhile, the demoulding device is adopted to demould the formed asphalt mixture test piece, compared with the existing demoulding method, the operation is convenient and fast, the demoulding efficiency is improved, the manpower and material resources are effectively saved, and the test efficiency is improved.

Description

forming device of bituminous mixture test piece
Technical Field
the utility model belongs to the experimental field of road engineering, concretely relates to forming device of bituminous mixture test piece.
Background
With the rapid development of the road traffic industry in China, the mileage of the high-grade highway is increased year by year, wherein the asphalt pavement becomes the main use form of the high-grade highway due to the advantages of good flexibility, low driving noise, high comfort, easy repair and the like, and the use proportion of the asphalt pavement is continuously increased. Deformation occurs under the influence of temperature, load and the like in the practical process of the asphalt pavement, so that the pavement is damaged by ruts, subsidence and the like, and the service life of the asphalt pavement is seriously influenced. In order to solve the asphalt pavement diseases, the actual pavement is simulated by using a forming device of an asphalt mixture test piece in a laboratory, so that subsequent test research is carried out.
In order to solve the road surface diseases and provide theoretical basis for preventing and controlling the diseases such as track settlement and the like, the temperature and the deformation of a formed mixture test piece are often measured. However, it is difficult to directly measure the internal temperature and deformation of the molded mixture as a whole. In the experiment process, a plurality of sensing devices such as a temperature sensor, a stress strain sensor and the like are often embedded, and the deformation, the temperature change and the like of the asphalt mixture test piece in the experiment can be reflected by combining the subtle changes generated in the test of the asphalt mixture test piece by other measuring equipment.
The prior art means is to arrange sensors after drilling holes at the central part by using a drill bit after mixture forming or arrange the sensors in advance in the test piece forming process, but the two technical means have great defects: later-period artificial drilling destroys the original stress state of the test piece, particularly irreparable damage is generated on large-particle-size aggregates forming the asphalt mixture framework, the drilling process is uncontrollable, dangerous accidents are easy to occur due to broken stones, and the drilling quality is difficult to guarantee; the thermometer is arranged in advance in the forming process of the test piece, damage and displacement are easy to occur, the survival rate of the thermometer is low, the arrangement position is not fixed, the temperature and deformation conditions of the test piece are difficult to accurately provide, and subsequent laboratory research and related engineering application are influenced. Therefore, it has important practical significance to develop an accurate and convenient mixture forming device for arranging sensors.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a forming device of bituminous mixture test piece, its simple structure, the practicality is good, can solve the problem of burying the response original paper underground, reduces the damage of drilling to the test piece, improves the sensor and settles efficiency and the degree of accuracy.
The utility model discloses a realize through following technical scheme:
a molding device of an asphalt mixture test piece comprises a molding die for molding an asphalt mixture and a demolding device for demolding the molded asphalt mixture test piece;
the forming die is of a box-shaped structure with an opening at the top, a plurality of mounting holes are uniformly distributed on a bottom plate of the forming die, and a first seal plug and a second seal plug are arranged in the mounting holes;
When the asphalt mixture test piece is formed, the first sealing plug is arranged in the driving device, and the top surface of the first sealing plug is flush with the top surface of the bottom plate of the forming die;
when the asphalt mixture test piece provided with the sensor mounting hole is molded, a second plugging plug is assembled in the mounting hole, a molding column is arranged at the top of the second plugging plug, and the molding column is arranged in a cavity of a molding die;
The demoulding device comprises a U-shaped shell, a demoulding plate and a driving device; the top of the lateral wall of casing both sides is provided with the horizontally limiting plate, and drive arrangement installs in the bottom of casing, and the stripper plate is located drive arrangement's top, and the top of stripper plate is provided with a plurality of fore-set, and the position of fore-set and the drive arrangement's of forming die bottom position phase-match, and forming die sets up at the top of stripper plate, and the bottom surface of limiting plate and the top surface contact of forming die's curb plate.
Preferably, the number of the mounting holes of the forming die is five, one of the mounting holes is provided with the center of the bottom plate of the forming die, and the other four mounting holes are respectively arranged at the corners of the bottom plate.
Preferably, the mounting hole of the forming die is a stepped hole, the stepped hole comprises a first mounting hole and a second mounting hole at the lower part of the first mounting hole, the diameter of the first mounting hole is smaller than that of the second mounting hole, an internal thread is arranged in the first mounting hole, and the stepped hole is connected with the plugging plug through a thread.
Preferably, the diameter of the forming column is smaller than the diameter of the first mounting hole.
preferably, the length of the molding column on the second plugging plug is 5 cm, 7 cm or 10 cm.
Preferably, a sleeve is arranged on the forming column, and the sleeve is a paper tube.
preferably, the bottom of the sealing plug is provided with an inner hexagonal groove for dismounting.
Preferably, the driving device of the demoulding device is a jack.
Preferably, the height of the sealing plug is smaller than the thickness of the bottom plate of the forming die.
Compared with the prior art, the utility model discloses following profitable technological effect has:
The utility model discloses an asphalt mixture test piece forming die sets up the shutoff stopper in the mounting hole through increasing the mounting hole at the bottom plate to set up the shaping post at the top of shutoff stopper, reserve the mounting hole of sensor simultaneously when shaping asphalt mixture test piece, make sensor mounting hole and asphalt mixture test piece together shaping, guaranteed the intensity of asphalt mixture test piece, avoid subsequent processing to cause the irrecoverable destruction of asphalt mixture test piece, reduced the preparation process of asphalt mixture test piece; and meanwhile, the demoulding device is adopted to demould the formed asphalt mixture test piece, compared with the existing demoulding method, the operation is convenient and fast, the demoulding efficiency is improved, the manpower and material resources are effectively saved, and the test efficiency is improved.
Meanwhile, various forming columns are designed according to experimental requirements, and the application range of the asphalt mixture test piece is widened. Further set up the sleeve pipe on the shaping post, the dismantlement of the shaping post of being convenient for improves the preparation efficiency of bituminous mixture test piece.
And a jack is further adopted for demoulding, so that the demoulding process is more labor-saving.
Drawings
Fig. 1 is a top view of the forming mold of the present invention;
Fig. 2 is a side view of the forming die of the present invention;
FIG. 3 is a schematic structural view of a first plug of the present invention;
FIG. 4 is a schematic structural view of a second plug of the utility model;
Figure 5 is a top view of a utility model stripper plate;
Fig. 6 is a schematic structural view of the demolding device of the utility model.
In the figure: 1. a base plate; 2. a frame; 3. a stepped bore; 4. forming a column; 6. a stripper plate; 7 a jack; 8. a housing.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
As shown in fig. 1-2, a device for forming a specimen of asphalt mixture includes a forming mold for making the specimen of asphalt mixture into a certain shape, and a demolding device for separating the specimen of asphalt mixture from the forming mold.
as shown in fig. 3-4, the forming mold is a box-shaped structure with an open top, and the forming mold comprises a frame 2 and a bottom plate 1 installed at the bottom of the frame; the frame 2 is the same as a common asphalt mixture test piece frame, the center and four corners of the bottom plate 1 are provided with step holes 1, each step hole comprises a first mounting hole and a second mounting hole arranged at the lower part of the first mounting hole, the diameter of each first mounting hole is smaller than that of each second mounting hole, internal threads are arranged in each first mounting hole, and a sealing plug is arranged in each step hole through threads.
the plugging plug comprises a first plugging plug and a second plugging plug; when the sensor is not installed in the mixture test piece, the first plugging plug is installed in the step hole, the first plugging plug is installed upwards from the bottom of the bottom plate of the forming die and is connected in place through threads, and the top of the first plugging plug is flush with the top surface of the bottom plate.
When a sensor needs to be installed in the mixture test piece, a second sealing plug is installed in the step hole, a cylindrical forming column 4 used for forming the sensor installation hole is arranged at the top of the second sealing plug, the second sealing plug is installed on the bottom plate through threads, the forming column 4 is located in a forming cavity of a forming die, and the diameter of the forming column 4 is smaller than that of the sealing plug.
the length of the forming column 4 is 5 cm, 7 cm or 10 cm, the forming columns 4 with different lengths are selected according to different experimental requirements, and the blocked head is an internal hexagon, so that the forming column is convenient to install and disassemble.
The working process is as follows: screwing the first plugging plug or the second plugging plug into a step hole of the bottom plate 1, pouring the asphalt mixture into a mold, closely inserting and tamping, compacting by using a wheel mill, maintaining for about 24 hours under a room temperature drying condition, and withdrawing the first plugging plug or the second plugging plug from the bottom plate when the asphalt mixture test piece is cooled to be hard, and demolding.
as shown in fig. 5-6, the stripper device comprises a U-shaped housing 8, a stripper plate 6 and jacks 7; the top of the lateral wall of casing both sides is provided with the horizontally limiting plate, jack 7 is installed in the bottom of casing 8, stripper plate 6 is located the top of jack 7, stripper plate 6's top is provided with a plurality of fore-set, the position of fore-set and the position phase-match of the step hole of forming die bottom, the diameter of fore-set is the same with the diameter of first mounting hole, forming die sets up the top at stripper plate 6, the fore-set is located step hole 3, the bottom surface of limiting plate and the top surface contact of forming die's curb plate, start jack 7, the fore-set promotes the mixture test piece upward movement in the forming die, and then accomplish the drawing of patterns with mixture test piece and forming die separation.
And embedding induction devices such as a thermometer and the like into the asphalt mixture test piece through a sleeve, filling the pore space with mineral powder or asphalt mixture, and measuring the internal change of the asphalt mixture test piece. The utility model has simple structure, reasonable design and easy operation, and can effectively solve the problem of reserving holes in the asphalt mixture test piece, so that the holes are more uniform and the actual test requirements can be met; and when reserving the hole of equidimension not, reduce the damage to the bituminous mixture test piece when drilling the bituminous mixture test piece, improve experimental efficiency.
To sum up, the forming device for the asphalt mixture test piece provided by the utility model has the advantages that the mounting holes are additionally arranged on the bottom plate, the structure is simple, the design is reasonable, the operation is easy, the problem of reserving the sensor mounting holes in the asphalt mixture test piece can be effectively solved, the mounting holes are more uniform, and the actual test requirements can be met; while mounting holes with different sizes are reserved, the damage to the asphalt mixture test piece during drilling of the asphalt mixture test piece is reduced, and the test efficiency is improved; meanwhile, the matched forming columns with different lengths can meet the use requirements under different conditions, and the forming device can completely replace the existing mixture forming device.
the above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims (9)

1. the device for molding the asphalt mixture test piece is characterized by comprising a molding die for molding the asphalt mixture and a demolding device for demolding the molded asphalt mixture test piece;
the forming die is of a box-shaped structure with an opening at the top, a plurality of mounting holes are uniformly distributed on a bottom plate (1) of the forming die, and a first seal plug and a second seal plug are arranged in the mounting holes;
When the asphalt mixture test piece is formed, the first sealing plug is arranged in the driving device, and the top surface of the first sealing plug is flush with the top surface of the bottom plate of the forming die;
When an asphalt mixture test piece provided with a sensor mounting hole is formed, a second plugging plug is assembled in the mounting hole, a forming column (4) is arranged at the top of the second plugging plug, and the forming column (4) is arranged in a cavity of a forming die;
The demoulding device comprises a U-shaped shell (8), a demoulding plate (6) and a driving device; the top of the lateral wall of casing (8) both sides is provided with the horizontally limiting plate, and drive arrangement installs the bottom at casing (8), and stripper plate (6) are located drive arrangement's top, and the top of stripper plate (6) is provided with a plurality of fore-posts, and the position of fore-post and the drive arrangement's of forming die bottom position phase-match, forming die set up the top at stripper plate (6), and the bottom surface of limiting plate contacts with the top surface of forming die's curb plate.
2. The device for molding the asphalt mixture test piece according to claim 1, wherein the number of the mounting holes of the molding die is five, one of the mounting holes is provided at the center of the bottom plate (1) of the molding die, and the other four mounting holes are respectively provided at the corners of the bottom plate (1).
3. The device for molding the asphalt mixture test piece according to claim 1, wherein the mounting hole of the molding die is a stepped hole (3), the stepped hole comprises a first mounting hole and a second mounting hole at the lower part of the first mounting hole, the diameter of the first mounting hole is smaller than that of the second mounting hole, an internal thread is arranged in the first mounting hole, and the stepped hole is connected with the plugging plug through a thread.
4. The device for forming the asphalt mixture test piece according to claim 3, wherein the diameter of the forming column (4) is smaller than the first mounting hole.
5. The molding device of the asphalt mixture test piece according to claim 1, wherein the length of the molding column (4) on the second plugging plug is 5 cm, 7 cm or 10 cm.
6. The device for forming the asphalt mixture test piece according to claim 1, wherein a sleeve is arranged on the forming column (4), and the sleeve is a paper tube.
7. The device for forming the asphalt mixture test piece according to claim 1, wherein the bottom of the sealing plug is provided with an inner hexagonal groove for disassembly and assembly.
8. The device for forming bituminous mixture test pieces according to claim 1, characterized in that the drive means of the demoulding device are jacks (7).
9. The device for forming the asphalt mixture test piece according to claim 1, wherein the height of the plugging plug is smaller than the thickness of the forming die base plate (1).
CN201822196520.0U 2018-12-24 2018-12-24 forming device of bituminous mixture test piece Expired - Fee Related CN209784021U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822196520.0U CN209784021U (en) 2018-12-24 2018-12-24 forming device of bituminous mixture test piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822196520.0U CN209784021U (en) 2018-12-24 2018-12-24 forming device of bituminous mixture test piece

Publications (1)

Publication Number Publication Date
CN209784021U true CN209784021U (en) 2019-12-13

Family

ID=68790769

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822196520.0U Expired - Fee Related CN209784021U (en) 2018-12-24 2018-12-24 forming device of bituminous mixture test piece

Country Status (1)

Country Link
CN (1) CN209784021U (en)

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191213

Termination date: 20201224

CF01 Termination of patent right due to non-payment of annual fee