CN111504878A - Base sealing structure for asphalt pavement water seepage measuring device - Google Patents
Base sealing structure for asphalt pavement water seepage measuring device Download PDFInfo
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- CN111504878A CN111504878A CN202010377206.1A CN202010377206A CN111504878A CN 111504878 A CN111504878 A CN 111504878A CN 202010377206 A CN202010377206 A CN 202010377206A CN 111504878 A CN111504878 A CN 111504878A
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- sealing structure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000010426 asphalt Substances 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000012188 paraffin wax Substances 0.000 claims description 36
- 238000003825 pressing Methods 0.000 claims description 8
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 11
- 230000035699 permeability Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000872 buffer Substances 0.000 description 4
- 230000001603 reducing effect Effects 0.000 description 4
- 241000167854 Bourreria succulenta Species 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method 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
- 230000003116 impacting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
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- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a base sealing structure for an asphalt pavement water seepage measuring device, which is characterized in that a connecting threaded sleeve is arranged on a base, the middle part of the base is provided with a through groove, at least three water baffles are equidistantly arranged in the through hole, the water baffles are annular plates, the inner diameters of the water baffles are sequentially increased from bottom to top, the water baffles are provided with the through holes, at least one trapezoidal pressure groove is arranged at the bottom of the base, multiple ring blank holders are formed among the trapezoidal pressure grooves, and a rubber ring is arranged in the connecting threaded sleeve; the heating column is connected with the heating wire and is made of heat conduction materials.
Description
Technical Field
The invention discloses a base sealing structure for an asphalt pavement water seepage measuring device, relates to a base sealing structure used on an asphalt pavement water seepage measuring device, and belongs to the field of municipal engineering. In particular to a base sealing structure which buffers falling water bodies through baffles, can perform multilayer plugging and ensures the measurement accuracy.
Background
The road surface crack is one of the common diseases of the road, it is along with the whole service life of the road, and aggravate with the increase of the road age, the road surface crack not only affects the road appearance and the travelling comfort, but also is easy to expand and causes the structural damage of the road surface, shorten the service life of the road surface, therefore need measure its water permeability in the initial stage of crack, and carry on the repair of different ways to the crack according to measuring the structure, and the existing apparatus for measuring water permeability of bituminous pavement its seal structure of base usually adopts the rubber seal ring, form the seal structure by pressing the seal ring to paste on the bituminous pavement, but because there are complicated tiny chinks on the bituminous pavement, the seal ring is sealed and is difficult to agree with these tiny chinks, cause the apparatus some water to flow out from chink, influence the accuracy of the experimental result.
The applicant is for solving a bituminous paving water permeability measuring mechanism of above-mentioned problem design, including graduated flask, running-board, the connection lantern ring, the controller, the base, the ballast ring, the paraffin ring, the heater strip, trapezoidal indent isotructure, and in the in-service use discovery when adding water in to the graduated flask, the water falls from the graduated flask top and produces great impact force to the measuring of bituminous paving's water permeability causes influence and interference.
Disclosure of Invention
In order to improve the situation, the base sealing structure for the asphalt pavement water seepage measuring device provided by the invention has the advantages that a falling water body is buffered through the baffle, multi-layer plugging can be carried out, and the measuring accuracy is ensured.
The invention relates to a base sealing structure for an asphalt pavement water seepage measuring device, which is realized by the following steps: the invention relates to a base sealing structure for an asphalt pavement water seepage measuring device, which consists of a base, a trapezoidal pressure groove, a water baffle, a connecting threaded sleeve, a through hole and a multi-ring pressure blank, wherein the connecting threaded sleeve is arranged on the base; the heating column is connected with the heating wire and is made of heat conduction materials;
further, the water baffle is replaced by a spiral pressure reduction blade; further, the water baffle is replaced by a staggered spoiler;
the invention also relates to a device for measuring the water seepage performance of the asphalt pavement, which is characterized in that: the paraffin wax heating device comprises a base, a water inlet pipe, measuring cylinders, a pedal plate, connecting sleeve rings, a control switch, a weight pressing ring, a rotating rod, a hinged connecting shaft, a fixing rod, a trapezoidal pressure groove, a paraffin wax ring and heating wires, wherein one end of the rotating rod is hinged with one end of the fixing rod through the hinged connecting shaft, the other end of the rotating rod is provided with the connecting sleeve ring, the other end of the fixing rod is provided with the connecting sleeve ring, one ends of the two measuring cylinders are respectively sleeved in the two connecting sleeve rings, one end of each measuring cylinder is connected with the base, the water inlet pipe is connected with the other end of each measuring cylinder and communicated with the measuring cylinders, the middle part of the base is provided with a circular table hole, the circular table hole is communicated with the measuring cylinders, the bottom of each circular table is provided with the trapezoidal pressure groove which is an annular groove, the paraffin wax ring is sleeved in the trapezoidal pressure groove, the, the weighing ring is embedded on the base, a pedal plate is arranged on the base, a through groove is formed in the rotating rod, a through groove is formed in the fixing rod, a sliding sleeve is arranged between the connecting sleeve ring and the measuring cylinder, anti-skidding grooves are formed in the pedal plate, the number of the measuring cylinders is increased to more than three, a baffle is arranged at the bottom of the circular truncated cone hole, the control switch is arranged on the base, and the control switch controls the on-off of the heating wires;
furthermore, two groups of M-shaped grooves are formed in the bottom of the base, one group of M-shaped grooves are located between the trapezoidal pressure groove and the outer wall of the base to form outer M-shaped tooth pressure edges, and the other group of M-shaped grooves are located between the circular table holes and the trapezoidal pressure groove to form inner M-shaped tooth pressure edges.
Has the beneficial effects.
Firstly, the influence of the impact force of the water body is reduced through a plurality of groups of turbulence structures, so that the accuracy of a permeability detection test is ensured.
And secondly, forming good sealing through a multi-layer annular sealing structure pair.
Drawings
FIG. 1 is a three-dimensional structure diagram of a device for measuring the water permeability of an asphalt pavement according to the present invention.
FIG. 2 is a schematic structural diagram of an asphalt pavement water permeability measuring device of the present invention.
Fig. 3 is a three-dimensional structure view of an embodiment 2 of the device for measuring the water permeability of the asphalt pavement.
FIG. 4 is a three-dimensional structural view of a base sealing structure of the asphalt pavement water seepage measuring device of the present invention.
FIG. 5 is a schematic structural diagram of a base sealing structure of the asphalt pavement water seepage measurement device of the present invention.
Fig. 6 is a schematic structural diagram of a sealing structure of a base of an asphalt pavement water seepage measuring device according to embodiment 2 of the present invention.
Fig. 7 is a schematic structural diagram of a sealing structure of a base of an asphalt pavement water seepage measuring device according to embodiment 3 of the present invention.
Fig. 8 is a schematic structural view of a sealing structure embodiment 4 of a base for an asphalt pavement water seepage measuring apparatus according to the present invention.
In the attached drawings
Wherein the method comprises the following steps: the device comprises a base (1), a water inlet pipe (2), a measuring cylinder (3), a pedal plate (4), a connecting sleeve ring (5), a controller (6), a weight pressing ring (7), a rotating rod (8), a hinged connecting shaft (9), a fixing rod (10), a trapezoidal pressure groove (11), a paraffin ring (12), a heating wire (13), an inner M-shaped tooth pressure pressing edge (14), an outer M-shaped tooth pressure pressing edge (15), a water baffle (16), a connecting screw sleeve (17), a through hole (18), a spiral pressure reducing blade (19), a staggered spoiler (20), a multi-ring pressure pressing edge (21) and a heating column (22).
The specific implementation mode is as follows:
example 1
The invention relates to a base sealing structure for an asphalt pavement water seepage measuring device, which is realized by the following steps: the invention relates to a base sealing structure for an asphalt pavement water seepage measuring device, which consists of a base (1), a trapezoidal pressure groove (11), a water baffle (16), a connecting threaded sleeve (17), a through hole (18) and a multi-ring pressure side (21), wherein the connecting threaded sleeve (17) is arranged on the base (1), the middle part of the base (1) is provided with a through groove, at least three water baffles (16) are equidistantly arranged in the through hole (18), the water baffles (16) are annular plates, the inner diameters of the water baffles (16) are sequentially increased from bottom to top, the water baffles (16) are provided with the through hole (18), at least one trapezoidal pressure groove (11) is arranged at the bottom of the base (1), the multi-ring pressure side (21) is formed between the trapezoidal pressure grooves (11), and a rubber ring is arranged in the connecting threaded sleeve (17);
when the water-saving measuring cylinder is used, a person connects one end of the measuring cylinder (3) with the connecting threaded sleeve (17), and when water is added into the measuring cylinder (3) through the water inlet pipe (2), the falling water body is buffered and reduced by the multilayer water baffle (16), so that the influence of the direct falling of the water body on the ground on impact on the measurement accuracy is avoided; and the multilayer paraffin ring (12) is used for sealing, so that the plugging effect is better.
Example 2
The difference between this example and example 1 is: a heating column (22) is arranged in the trapezoidal pressure groove (11), the heating column (22) is connected with a heating wire (13), and the heating column (22) is made of a heat conduction material; when the paraffin ring softening device is used, the heat conducting column is inserted into the paraffin ring (12), the paraffin ring (12) is fixed, and the softening efficiency of the paraffin ring (12) is improved through internal heating.
Example 3
The difference between this example and example 1 is: the water baffle (16) is replaced by a spiral pressure reducing blade (19); when the water pressure reducing device is used, water flow water pressure is buffered and reduced through the spiral structure, and the pressure reducing effect is good.
Example 4
The difference between this example and example 1 is: the water baffle (16) is replaced by a staggered spoiler (20); when in use, the falling entity is disturbed in a staggered way, and the pressure reduction effect is good;
the design that the inner diameter of the water baffle (16) is sequentially increased from bottom to top gradually increases the buffer of the impact force of the water body from top to bottom, and the baffle is prevented from directly blocking the impact water flow to cause damage;
the water baffle (16) is provided with a through hole (18), so that after the water body impact force is blocked, the water body can flow down from the through hole (18) and the middle part of the water baffle (16) to measure the normal water permeability;
the rubber ring is arranged in the connecting threaded sleeve (17), so that the sealing property between the connecting threaded sleeve (17) and the measuring cylinder (3) is enhanced, and the measuring accuracy is ensured;
the design of matching the baffle with the through hole (18) buffers the impact force of the falling water body, and avoids influencing the measurement accuracy;
the design that the multilayer water baffles (16) buffer and reduce the falling water body can avoid the direct falling of the water body from impacting the ground to influence the measurement accuracy;
the purposes of buffering falling water bodies through the baffle plates, plugging in multiple layers and guaranteeing measurement accuracy are achieved.
The invention also relates to a device for measuring the water seepage performance of the asphalt pavement, which is characterized in that: comprises a base (1), a water inlet pipe (2), a measuring cylinder (3), a pedal plate (4), a connecting sleeve ring (5), a control switch, a pressure-weight ring (7), a rotating rod (8), a hinged connecting shaft (9), a fixed rod (10), a trapezoidal pressure groove (11), a paraffin ring (12) and a heating wire (13), wherein one end of the rotating rod (8) is hinged with one end of the fixed rod (10) through the hinged connecting shaft (9), the other end of the rotating rod (8) is provided with the connecting sleeve ring (5), the other end of the fixed rod (10) is provided with the connecting sleeve ring (5), one ends of the two measuring cylinders (3) are respectively sleeved in the two connecting sleeve rings (5), one end of the measuring cylinder (3) is connected with the base (1), the water inlet pipe (2) is connected with the other end of the measuring cylinder (3) and communicated with the measuring cylinder, the middle part of the base (1) is provided with a circular table hole, the circular table, the bottom of the circular truncated cone is provided with a trapezoidal pressure groove (11), the trapezoidal pressure groove (11) is an annular groove, the paraffin ring (12) is sleeved in the trapezoidal pressure groove (11), the bottom of the paraffin ring (12) is exposed out of the trapezoidal pressure groove (11), the heating wire (13) is embedded in the circular table, the heating wires (13) are wound on two sides of the trapezoidal pressure groove (11), the pressure-weight ring (7) is embedded on the base (1), a pedal (4) is arranged on the base (1), a through groove is arranged on the rotating rod (8), a through groove is arranged on the fixed rod (10), a sliding sleeve is arranged between the connecting lantern ring (5) and the measuring cylinder (3), the pedal (4) is provided with an anti-skid groove, more than three measuring cylinders (3) are additionally arranged, a baffle is arranged at the bottom of the circular truncated cone hole, a control switch is arranged on the base (1), and the control switch controls the on-off of the heating wire (13);
when the device is used, a person places the base (1) on an asphalt pavement, the bottom of the paraffin ring (12) is in contact with the asphalt pavement, the person controls the heating wire (13) to heat the paraffin ring (12) through a control switch, so that the paraffin ring (12) is melted, the periphery of a circular truncated cone hole is blocked, meanwhile, the paraffin ring penetrates into small gaps on the asphalt pavement to be blocked, then a heater is turned off, at the moment, the two measuring cylinders (3) are fixedly adhered to the asphalt pavement through paraffin, the person adds water into the measuring cylinders (3) through the water inlet pipe (2), then the change of the water level in the measuring cylinders (3) is observed to calculate the water seepage amount, the paraffin melting point is low, the damage to the pavement caused by overheating is avoided, an effective sealing structure can be formed aiming at the small gaps on the asphalt pavement, the accuracy of an experiment is ensured; after the measurement is finished, the paraffin on the road surface is removed by personnel for recovery and cleaning, and the environment is protected;
furthermore, two groups of M-shaped grooves are formed in the bottom of the base (1), wherein one group of M-shaped grooves are positioned between the trapezoidal pressure groove (11) and the outer wall of the base to form an outer M-shaped tooth pressure edge (15), and the other group of M-shaped grooves are positioned between the circular table hole and the trapezoidal pressure groove (11) to form an inner M-shaped tooth pressure edge (14); when the paraffin wax melting tank is used, paraffin wax can be embedded into the M-shaped groove when being melted, and better fixed sealing is carried out;
the heater strip (13) is coiled on two sides of the trapezoidal pressure groove (11), so that the heating area of the paraffin ring (12) in the trapezoidal pressure groove (11) is large, and the heating effect is good;
the base (1) is provided with a pedal (4), and after the paraffin ring (12) is melted, a person steps on the pedal (4) to compact paraffin and the ground, so that the sealing effect is good;
the pedal (4) is provided with an anti-slip groove, so that the friction force between the feet of the person and the pedal (4) is increased, and slipping is avoided;
the measuring cylinder (3) is additionally provided with more than three designs, so that the water seepage performance can be measured at multiple points, the accuracy of the experiment is ensured, and the stability is better;
the design that a baffle plate is arranged at the bottom of the circular truncated cone hole prevents molten paraffin from flowing into the circular truncated cone hole to influence measurement;
the heater strip (13) and the trapezoidal pressure groove (11) are matched, so that the paraffin ring (12) can be heated and melted, the circular truncated cone hole is plugged by paraffin, the paraffin penetrates into a tiny gap on an asphalt pavement to be plugged, the sealing effect is good, the measurement accuracy is ensured, the asphalt pavement is not damaged, and the asphalt pavement is easy to recover and clean subsequently through environmental protection; (ii) a
The rotating rod (8) and the fixed rod (10) are matched, so that two measuring cylinders (3) can be clamped at the same time, and the stability of erecting the measuring cylinders (3) is better due to a double-measuring structure;
the heating wire (13) heats the paraffin ring (12), the paraffin ring (12) is melted and flows to plug the periphery of the circular truncated cone hole, and meanwhile, the paraffin ring permeates into small gaps on the asphalt pavement to plug, so that the plugging effect is good;
after the measurement is finished, personnel carry out the design of removing the paraffin on the road surface for recovery and cleaning, so that the influence on the road appearance is avoided, and the environment is protected;
the aims of plugging by melting the paraffin ring (12), plugging by infiltration of gaps and ensuring measurement accuracy are fulfilled.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
It should be further noted that, while the above specific embodiments are described for simplicity and clarity, only the differences from other embodiments are described, but those skilled in the art should understand that the above specific embodiments are independent technical solutions.
Claims (10)
1. The utility model provides a base seal structure for bituminous paving infiltration measuring device which characterized by: by base, trapezoidal indent, breakwater, connect swivel nut, through-hole and multi-ring blank pressing and constitute, connect the swivel nut and arrange in on the base, open at the base middle part has logical groove, and at least three breakwater equidistance is arranged in the through-hole, it has the through-hole to open on the breakwater, the trapezoidal indent of base bottom is one at least, form the multi-ring blank pressing between the trapezoidal indent, heating column and heater strip are connected.
2. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1, wherein the water baffle is replaced by a spiral pressure relief vane.
3. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1 or 2, wherein the water baffle is replaced by a staggered spoiler.
4. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1, wherein the heating column is made of heat conductive material.
5. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1, wherein the water guard is an annular plate, and the inner diameter of the water guard increases from bottom to top in sequence.
6. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1, wherein a rubber ring is arranged in the connecting screw sleeve.
7. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 1, wherein the asphalt pavement water seepage performance measuring device is composed of a base, a water inlet pipe, measuring cylinders, a pedal plate, connecting sleeve rings, a control switch, a weight ring, a rotating rod, a hinged connecting shaft, a fixed rod, a trapezoidal pressure groove, a paraffin ring and a heating wire, one end of the rotating rod is hinged with one end of the fixed rod through the hinged connecting shaft, the other end of the rotating rod is provided with the connecting sleeve ring, the other end of the fixed rod is provided with the connecting sleeve ring, one ends of the two measuring cylinders are respectively sleeved in the two connecting sleeve rings, one end of the measuring cylinder is connected with the base, the water inlet pipe is connected with the other end of the measuring cylinder and communicated with the water inlet pipe, a circular table hole is formed in the middle part of the base and communicated with the measuring cylinders, the paraffin ring is sleeved in the trapezoidal pressure groove, and, the heating wire is embedded in the round platform, the heating wire is wound on two sides of the trapezoidal pressure groove, the weight ring is embedded on the base, the base is provided with a pedal plate, the rotating rod is provided with a through groove, the fixing rod is provided with a through groove, a sliding sleeve is arranged between the connecting sleeve ring and the measuring cylinder, the pedal plate is provided with an anti-skidding groove, the bottom of the round platform hole is provided with a baffle, the control switch is arranged on the base, and the control switch controls the on-off of the heating wire.
8. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 7, wherein the base bottom is provided with two sets of M-shaped grooves, one set of the M-shaped grooves is positioned between the trapezoidal pressure groove and the outer wall of the base to form an outer M-shaped tooth pressure edge, and the other set of the M-shaped grooves is positioned between the circular platform hole and the trapezoidal pressure groove to form an inner M-shaped tooth pressure edge.
9. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 7, wherein the bottom of the circular truncated cone is provided with a trapezoidal pressure groove which is an annular groove.
10. The base sealing structure for the asphalt pavement water seepage measuring device according to claim 7, wherein the number of the measuring cylinders is increased to three or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377206.1A CN111504878A (en) | 2020-05-07 | 2020-05-07 | Base sealing structure for asphalt pavement water seepage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377206.1A CN111504878A (en) | 2020-05-07 | 2020-05-07 | Base sealing structure for asphalt pavement water seepage measuring device |
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| CN111504878A true CN111504878A (en) | 2020-08-07 |
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| CN202010377206.1A Pending CN111504878A (en) | 2020-05-07 | 2020-05-07 | Base sealing structure for asphalt pavement water seepage measuring device |
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| CN209327166U (en) * | 2018-09-27 | 2019-08-30 | 甘肃省地震局（中国地震局兰州地震研究所） | A kind of interior intact loess precipitation leakage device |
| CN209243575U (en) * | 2018-11-23 | 2019-08-13 | 中国建筑第七工程局有限公司 | A kind of anti-clogging bridge drain system |
| CN209979442U (en) * | 2019-03-14 | 2020-01-21 | 广西交通科学研究院有限公司 | Asphalt pavement water seepage instrument |
| CN210069349U (en) * | 2019-06-28 | 2020-02-14 | 重庆建工住宅建设有限公司 | Road surface infiltration test device |
| CN110687031A (en) * | 2019-10-25 | 2020-01-14 | 郑卫华 | Intelligent pavement water seepage detection vehicle |
| CN110796999A (en) * | 2019-12-09 | 2020-02-14 | 上海威派格智慧水务股份有限公司 | Water tank or pond silencing device that intakes |
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