CN211317986U - Clamp for field detection of interlayer combination condition of white-plus-black pavement - Google Patents
Clamp for field detection of interlayer combination condition of white-plus-black pavement Download PDFInfo
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- CN211317986U CN211317986U CN201921601735.4U CN201921601735U CN211317986U CN 211317986 U CN211317986 U CN 211317986U CN 201921601735 U CN201921601735 U CN 201921601735U CN 211317986 U CN211317986 U CN 211317986U
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- forging die
- die main
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- 239000011229 interlayer Substances 0.000 title claims description 20
- 238000001514 detection method Methods 0.000 title claims description 14
- 238000005242 forging Methods 0.000 claims abstract description 63
- 238000012360 testing method Methods 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000002344 surface layer Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000004593 Epoxy Substances 0.000 abstract 2
- 238000005498 polishing Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 description 18
- 239000000853 adhesive Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 9
- 239000010426 asphalt Substances 0.000 description 8
- 238000010008 shearing Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011384 asphalt concrete Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a be used for white plus black road surface layer bonding situation anchor clamps for witnessed inspections, including force transfer structure, the forging die main part, the clamping piece, the rope, bearing and non return ratchet, force transfer structure includes the dowel steel, the wire rope handling hole that runs through about forging die main part upper portion step face is equipped with, bearing inner circle fixed cover is located on the dowel steel, clamping piece medial surface upper portion and the detachable joint of forging die main part lower part lateral surface, two adjacent clamping pieces pass through the mutual interlock of tooth's socket structure, rope first end is fixed in one of them clamping piece bottom, rope second end is fixed in bearing inner race lower part, the ratchet inner circle is fixed in bearing inner race upper portion, the torsion spring lower extreme is fixed in forging die main part upper portion, the torsion spring upper end is fixed in the first end of pawl. The utility model has the characteristics of need not use epoxy AB to glue to improve measurement accuracy, saved epoxy AB and glued solid time and the time of polishing, improved work efficiency.
Description
Technical Field
The utility model relates to an anchor clamps technical field especially relates to a be used for white to add black road surface layer to combine situation anchor clamps for witnessed inspections.
Background
With the high-speed development of national economic construction in China, traffic demand and highway mileage are rapidly increased, but when highway network construction is achieved with huge achievements, due to factors such as vehicle overload phenomenon, severe climatic environment, good and uneven construction quality, technical condition limitation and the like, the problems of rutting, pit and groove, slippage and damage and the like gradually occur in the operation process of the established highway asphalt pavement after several years of traffic passing, and the surface layer has to be repaired greatly.
In local diseases such as interlayer slippage, U-shaped cracks and the like, and maintenance means such as paving an asphalt layer on an old cement concrete pavement, construction units and technicians need to pay attention to the interlayer bonding strength and the shear strength among different structural layers, and the interlayer bonding quality is an important index influencing the service life of the asphalt concrete pavement and evaluating the performance of a composite pavement.
A drawing experimental instrument and a torsional shear detection instrument for field detection of the existing interlayer bonding condition refer to a forging die for testing the adhesive force of paint. The adhesion test is a process of bonding the coating to be tested and a forging die through AB glue (generally epoxy resin glue), and then drawing the forging die by an instrument until the cohesion of the coating to be tested is destroyed, thereby obtaining the adhesion strength value of the coating.
The following problems exist in the prior art: 1. when a forging die is adopted for carrying out a drawing test or a torsion shear test, only normal stress or shear stress is applied to the top of a core sample, the damping effect of the asphalt concrete can enable the asphalt concrete to absorb partial stress so as to influence the detection of an actual shear strength value, and the measurement is larger due to the shear deformation of the asphalt mixture when a shear torsion angle is detected; 2. when a pavement interlayer drawing test or a torsional shear test is carried out by adopting a forging die, the forging die and the asphalt mixture need to be bonded by an adhesive (AB adhesive and the like), the structural depth and the friction coefficient of a wearing layer at the top are usually larger due to the requirement of the performance of the asphalt pavement for skid resistance, the contact area between surface aggregate and the forging die is smaller if grinding is not carried out, the bonding effect is poorer, and the field detection process and time are increased if the surface of the asphalt mixture is ground by a grinding machine; 3. whether the surface of the test piece is polished or not, the operability of coating the adhesive by an operator, the adhesive strength of the adhesive and other factors have great influence on the adhesive effect, when the adhesive strength between the forging die and the test piece is smaller than the adhesive strength of the layer to be detected, the adhesive is subjected to cohesive failure or adhesive failure between the adhesive and the forging die and the test piece, the local porosity of the asphalt mixture is possibly large due to factors such as construction grading segregation and insufficient compaction, and the cohesive strength and the shear strength are lower than the adhesive strength of the layer to be detected. When cohesive failure or adhesion failure occurs to materials at other layers except for the sticky layer to be detected, only the actual value of the sticky layer to be detected is larger than the detection value, and a specific strength value cannot be obtained; 4. the bonding time and the field detection need to reduce the experimental procedures and time as much as possible due to traffic control, the longest time link when the forging die is adopted for drawing test and shearing test is the time for waiting for the adhesive to be cured to form the strength after the forging die is bonded, the bonding time is related to environmental factors, and the time required for curing the adhesive is longer when the air temperature is lower. The waiting time should also be estimated conservatively to ensure the quality of the adhesive.
Therefore, there is a high necessity for a new jig for solving the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for white to add black road surface layer to combine situation anchor clamps for witnessed inspections for solve the technical problem that exists among the above-mentioned prior art, improve measurement accuracy rate and work efficiency, reduce working time.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a be used for white blackened road surface interlayer combination situation anchor clamps for witnessed inspections, including power transmission structure, forging die main part, clamping piece, rope, bearing and non return ratchet, power transmission structure includes the dowel steel, the forging die main part includes forging die main part upper portion and forging die main part lower part, the forging die main part is stepped structure just the diameter of forging die main part lower part is less than the diameter of forging die main part upper portion, the step face on forging die main part upper portion is equipped with the rope handling hole that runs through from top to bottom, the inner circle fixed cover of bearing is located on the dowel steel, the clamping piece is the tile form, the medial surface upper portion of clamping piece with the detachable joint of lateral surface of forging die main part lower part, adjacent two the clamping piece passes through the mutual interlock of tooth's socket structure, the first end of rope is fixed in one of them clamping piece bottom, the second end of rope passes a plurality of clamping pieces along clockwise or anticlockwise, the anti-return ratchet mechanism comprises a ratchet wheel, a pawl and a torsion spring, an inner ring of the ratchet wheel is fixed on the upper portion of the outer ring of the bearing, the lower end of the torsion spring is fixed on the upper portion of the forging die main body, the upper end of the torsion spring is fixed on the first end of the pawl, and the second end of the pawl is used for limiting the ratchet wheel in a single direction.
Preferably, the inner surface of the clamping piece is provided with three limiting columns, the three limiting columns are located at the same height, the three limiting columns are respectively located at three quartering points of an arc at the corresponding height of the inner surface of the clamping piece, the middle limiting column is in the radial direction, the limiting columns at two ends are parallel to the middle limiting column, the side wall of the lower part of the forging die main body is provided with a limiting hole, and the limiting hole is used for the insertion of the limiting columns.
Preferably, the force transmission structure further comprises an outer hexagon bolt, and the outer hexagon bolt is in threaded connection with the top of the force transmission rod.
Preferably, the force transmission structure further comprises a screw thread, and the screw thread is connected to the top of the force transmission rod in a threaded mode.
Preferably, the diameter of the rope is 2mm and the material is stainless steel, the rope has 7 strands and each strand is 7, and the twist direction is the mutual twist of right side.
Preferably, the lower part of the inner side surface of the clamping piece is provided with a vertical notch.
The utility model discloses for prior art gain following technological effect:
the utility model discloses can effectively avoid gluing through the AB glue between forging die mould and the coating and stick produced problem together to have following advantage: 1. the clamp for detecting the on-site drawing test and the torsional shear test of the interlayer condition of the pavement is designed, the test process is optimized, and the waiting time for the curing of the adhesive when the epoxy resin is used for bonding the forging die is reduced. 2. The detection and measurement accuracy is improved, and the problem that an accurate numerical value cannot be obtained due to cohesive failure or adhesion failure of the adhesive and the asphalt layer is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an upper structure of a clamping piece of the clamp for in-situ detection of interlayer bonding condition of a white-black pavement according to the embodiment;
FIG. 2 is a front view of the above-mentioned structure of the clamping piece of the clamp for in-situ detection of interlayer bonding condition of white and black pavement according to the present embodiment;
FIG. 3 is a top view of the above-mentioned structure of the clamping piece of the clamp for in-situ detection of interlayer bonding condition of white and black pavement according to the present embodiment;
FIG. 4 is a schematic view of a clamping piece structure of the clamp for field testing of interlayer bonding conditions of a white-black pavement according to the embodiment;
in the figure: 101-forging die main body upper part; 102-a die body lower part; 103-threading holes; 104-a limiting hole; 201-dowel bars; 202-outer hexagon bolt; 301-a clip; 302-vertical through holes; 303-circular through holes; 304-a limit post; 305-vertical grooving; 306-gullet structure; 4-a rope; 501-a bearing; 502-ratchet; 503-pawl; 504-torsion spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a be used for white to add black road surface layer to combine situation anchor clamps for witnessed inspections for solve the technical problem that exists among the above-mentioned prior art, improve measurement accuracy rate and work efficiency, reduce working time.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 4, the present embodiment provides a clamp for field detection of interlayer bonding conditions of a white-blackened pavement, which includes a force transmission structure, a forging die body, a clamping piece 301, a rope 4, a bearing 501, and a non-return ratchet 502 mechanism, where the force transmission structure includes a force transmission rod 201, and the force transmission structure is used to connect a stretching or shearing device. The forging die body comprises a forging die body upper portion 101 and a forging die body lower portion 102, the forging die body is of a stepped structure, the diameter of the forging die body lower portion 102 is smaller than that of the forging die body upper portion 101, a rope penetrating hole 103 penetrating through the forging die body upper portion 101 is formed in the stepped surface of the forging die body upper portion 101, and a rope 4 penetrates through the rope penetrating hole 103. The inner ring of the bearing 501 is fixedly sleeved on the dowel bar 201, the clamping piece 301 is tile-shaped, the outer side face and the inner side face of the clamping piece 301 are parts of a cylindrical surface, the upper portion of the inner side face of the clamping piece 301 is detachably clamped with the outer side face of the forging die main body lower portion 102, and the clamping piece 301 and the forging die main body lower portion 102 are limited and prevented from sliding mutually. Two adjacent clips 301 are engaged with each other through the spline structure 306, and the shape and number of the spline structure 306 can be selected by those skilled in the art according to actual needs as long as the mutual matching can be achieved. The first end of the rope 4 is fixed to the bottom of one of the jaws 301, and one skilled in the art can tie the first end of the rope 4 to the bottom teeth at the gullet structure 306 of the jaw 301, or other methods can be used as long as the first end of the rope can be fixed. The second end of the rope 4 sequentially penetrates through the clamping pieces 301 along the clockwise direction or the anticlockwise direction, then upwards penetrates through the occlusion part of two clamping pieces 301 along the vertical direction, then upwards penetrates through the rope threading hole 103, and finally is fixed on the lower part of the outer ring of the bearing 501, the clamping pieces 301 are provided with arc-shaped through holes 303 and vertical through holes 302 for the rope 4 to pass through, and the second end of the pulling rope 4 can enable the clamping pieces 301 to have a compact structure and clamp the asphalt concrete core sample test piece. The non-return ratchet mechanism comprises a ratchet 502, a pawl 503 and a torsion spring 504, wherein an inner ring of the ratchet 502 is fixed on the upper part of an outer ring of the bearing 501, a lower end of the torsion spring 504 is fixed on the upper part 101 of the forging die body, an upper end of the torsion spring 504 is fixed on a first end of the pawl 503, and a second end of the pawl 503 is used for limiting the ratchet 502 in a one-way mode.
When the clamping die is used, the tightness of the rope 4 is firstly adjusted, so that the clamping piece 301 can extend into gaps around the forging die to be clamped. When the position is fixed, an operator manually rotates the ratchet wheel 502, when the rope 4 is tensioned to a certain degree, the inner side wall of the clamping piece 301 clamps the piece to be tested, the ratchet wheel 502 stops rotating, the second end of the pawl 503 abuts against the ratchet wheel 502, the ratchet wheel 502 is prevented from being reversed, and therefore the clamping effect of the clamping piece 301 is achieved.
In order to enable the clamping piece 301 to only generate relative displacement along the radial direction of the lower portion 102 of the forging die body, in this embodiment, three limiting columns 304 are arranged on the inner surface of the clamping piece 301, the three limiting columns 304 are located at the same height, the three limiting columns 304 are respectively located at three quartering points of an arc at the corresponding height of the inner surface of the clamping piece 301, the middle limiting column 304 is in the radial direction, the limiting columns 304 at two ends are parallel to the middle limiting column 304, a limiting hole 104 is formed in the side wall of the lower portion 102 of the forging die body, and the limiting hole 104 is used for the insertion of the limiting column 304. The arrangement can prevent the clamping piece 301 and the forging die main body lower part 102 from generating relative displacement in the vertical direction, and a person skilled in the art can also adjust the number and the spacing of the limiting columns 304 according to actual needs as long as the technical effect of limiting can be realized.
In the process of carrying out the shear test, the device in this embodiment needs to be connected with a shearing device, and for this reason, the force transmission structure further comprises an outer hexagon bolt 202, and the outer hexagon bolt 202 is in threaded connection with the top of the dowel bar 201. During the test, the shearing apparatus was fixed to the outer hexagon bolt 202, and a shearing force was applied by rotating the outer hexagon bolt 202, thereby measuring the shearing resistance.
In the process of drawing test, the device in this embodiment needs to be connected with a drawing device, and for this purpose, the force transmission structure further comprises a screw thread which is connected with the top of the force transmission rod 201 in a threaded manner. Two ends of the screw thread are respectively in threaded connection with the dowel bar 201 and the drawing device, so that force transmission in the drawing test is realized.
The rope 4 sequentially passes through the clamping piece 301 and the forging die body upper part 101 and is finally fixed on the rotating shaft so as to increase the clamping force of the clamping piece 301, and the rope 4 must have certain strength to prevent disconnection in the test process. In order to improve the strength of the rope 4, in the embodiment, the diameter of the rope 4 is 2mm, the material of the rope 4 is stainless steel, the number of the rope 4 is 7, each rope is 7, and the twisting direction is right alternate twisting. Those skilled in the art can also adjust the number of the ropes 4 or change the twisting manner according to actual material change, as long as the strength of the ropes 4 can be improved.
Not only the clamping force of the clip 301 against the forging die but also the frictional force between the clip 301 and the forging die is required in the process of clamping the forging die. To enhance friction, the forging die is prevented from falling off the clip 301 during the clamping process. In this embodiment, the lower portion of the inner side surface of the clip 301 has a vertical notch 305. Those skilled in the art may also perform processes such as shot blasting and sanding on the inner surface of the clip 301 to increase the friction coefficient, or change the shape and number of the grooves as long as the friction force can be increased.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. The utility model provides a be used for white blackened road surface interlayer to combine on-spot anchor clamps for condition detection which characterized in that: the forging die comprises a force transmission structure, a forging die main body, clamping pieces, a rope, a bearing and a non-return ratchet mechanism, wherein the force transmission structure comprises a dowel bar, the forging die main body comprises an upper forging die main body part and a lower forging die main body part, the forging die main body is of a stepped structure, the diameter of the lower forging die main body part is smaller than that of the upper forging die main body part, a rope penetrating hole penetrating through the forging die main body is formed in the step surface of the upper forging die main body part up and down, an inner ring of the bearing is fixedly sleeved on the dowel bar, the clamping pieces are tile-shaped, the upper inner side surfaces of the clamping pieces are detachably clamped with the outer side surfaces of the lower forging die main body part, two adjacent clamping pieces are mutually meshed through a tooth groove structure, a first end of the rope is fixed at the bottom of one of the clamping pieces, and a second end of the rope sequentially penetrates through, the clamping piece is provided with an arc-shaped through hole and a vertical through hole for the rope to pass through, the non-return ratchet mechanism comprises a ratchet wheel, a pawl and a torsion spring, an inner ring of the ratchet wheel is fixed on the upper portion of the outer ring of the bearing, the lower end of the torsion spring is fixed on the upper portion of the forging die main body, the upper end of the torsion spring is fixed on the first end of the pawl, and the second end of the pawl is used for limiting the ratchet wheel in a single direction.
2. The jig for on-site testing of interlayer bonding condition on a white-to-black road surface according to claim 1, characterized in that: the inner surface of the clamping piece is provided with three limiting columns, the three limiting columns are located at the same height, the three limiting columns are respectively located at three quartering points of the arc at the corresponding height of the inner surface of the clamping piece, the middle limiting column is in the radial direction, the limiting columns at two ends are parallel to the middle limiting column, the side wall of the lower part of the forging die main body is provided with a limiting hole, and the limiting hole is used for the insertion of the limiting columns.
3. The jig for on-site testing of interlayer bonding condition on a white-to-black road surface according to claim 1, characterized in that: the force transmission structure further comprises an outer hexagon bolt, and the outer hexagon bolt is in threaded connection with the top of the force transmission rod.
4. The jig for on-site testing of interlayer bonding condition on a white-to-black road surface according to claim 1, characterized in that: the force transmission structure further comprises a screw thread, and the screw thread is in threaded connection with the top of the force transmission rod.
5. The jig for on-site testing of interlayer bonding condition on a white-to-black road surface according to claim 1, characterized in that: the rope diameter is 2mm and the material is stainless steel, the rope has 7 strands and every thigh is 7, and the direction of twisting together is the mutual twisting in right side.
6. The jig for on-site testing of interlayer bonding condition on a white-to-black road surface according to claim 1, characterized in that: the lower part of the inner side surface of the clamping piece is provided with a vertical notch groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601735.4U CN211317986U (en) | 2019-09-25 | 2019-09-25 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601735.4U CN211317986U (en) | 2019-09-25 | 2019-09-25 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211317986U true CN211317986U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921601735.4U Withdrawn - After Issue CN211317986U (en) | 2019-09-25 | 2019-09-25 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
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| Country | Link |
|---|---|
| CN (1) | CN211317986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595877A (en) * | 2019-09-25 | 2019-12-20 | 广州肖宁道路工程技术研究事务所有限公司 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
-
2019
- 2019-09-25 CN CN201921601735.4U patent/CN211317986U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595877A (en) * | 2019-09-25 | 2019-12-20 | 广州肖宁道路工程技术研究事务所有限公司 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
| CN110595877B (en) * | 2019-09-25 | 2024-07-09 | 广州肖宁道路工程技术研究事务所有限公司 | Clamp for on-site detection of interlayer bonding condition of white-plus-black pavement |
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Address after: 510031 20th floor, JIAYE building, 318 Dongfeng Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Beihuan Intelligent Transportation Technology Co.,Ltd. Patentee after: GUANGZHOU XIAONING INSTITUTE OF ROADWAY ENGINEERING Co.,Ltd. Address before: 510031 20th floor, JIAYE building, 318 Dongfeng Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU NORTH RING SUPER HIGHWAY Co.,Ltd. Patentee before: GUANGZHOU XIAONING INSTITUTE OF ROADWAY ENGINEERING Co.,Ltd. |
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Granted publication date: 20200821 Effective date of abandoning: 20240709 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200821 Effective date of abandoning: 20240709 |