CN110725346A - Roadbed compactness detects with water injection formula volume detection device that digs pit - Google Patents

Roadbed compactness detects with water injection formula volume detection device that digs pit Download PDF

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Publication number
CN110725346A
CN110725346A CN201910969576.1A CN201910969576A CN110725346A CN 110725346 A CN110725346 A CN 110725346A CN 201910969576 A CN201910969576 A CN 201910969576A CN 110725346 A CN110725346 A CN 110725346A
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China
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water
elastic membrane
measuring unit
water injection
detection device
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CN201910969576.1A
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Chinese (zh)
Inventor
邵景干
尚廷东
吴跟上
王俊超
吴振全
贾洋
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Henan Niupa Institute of Mechanical Engineering
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Henan Niupa Institute of Mechanical Engineering
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Priority to CN201910969576.1A priority Critical patent/CN110725346A/en
Publication of CN110725346A publication Critical patent/CN110725346A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/10—Miscellaneous comprising sensor means

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Road Repair (AREA)

Abstract

The invention relates to a water injection type pit digging volume detection device for roadbed compactness detection, which comprises a water injection mechanism and a measurement unit, wherein the measurement unit comprises a measurement unit shell, an elastic membrane which is arranged on the outer side of the measurement unit shell and used for fully paving the corresponding part of a roadbed is hermetically fixed on the measurement unit shell, the water injection mechanism comprises a water tank, a water channel which is used for communicating the water tank with the inner side of the elastic membrane is arranged on the measurement unit shell, a water pump is arranged on the water channel, and the water tank and/or the water channel are/is connected with a metering sensor which is used for metering the water injection quantity to the. The water pump injects the liquid in the water tank to the inner side of the elastic membrane, the elastic membrane elastically deforms to fully cover the corresponding part of the roadbed, and the metering sensor obtains the water injection amount, so that the volume of the corresponding part, such as the pit digging position, is obtained.

Description

Roadbed compactness detects with water injection formula volume detection device that digs pit
Technical Field
The invention relates to a water injection type pit digging volume detection device in the field of roadbed compactness detection.
Background
The roadbed compactness is one of key indexes for roadbed and pavement construction quality detection, the density condition after on-site compaction is represented, and the higher the compactness is, the higher the density is, and the better the overall performance of the material is.
For roadbed, semi-rigid base course of road surface and flexible base course of granular material, the compactness is the ratio of dry density actually reached in construction site to the maximum dry density obtained by indoor standard experiment; for asphalt surface course and asphalt stabilized base course, the degree of compaction is the ratio of the density achieved on site to the indoor standard density. Therefore, the determination of the compactness of the roadbed mainly comprises the determination of indoor standard density (maximum dry density) and field density test.
The indoor standard density is easy to measure, so the key of the compactness detection lies in the field density test, the pit digging method detection is a common field density test mode, the basic working mode is to dig a detection pit on the detected road surface, the weight of the material taken out from the pit digging can be weighed after the material is dried, sand is filled into the detection pit through a funnel, after the detection pit is filled with the sand, the volume of the detection pit is obtained through the difference between the volume of the original sand in the funnel and the volume of the residual sand in the funnel, and then the field compactness of the roadbed is obtained through calculation. Obtaining the detection pore volume by sand-casting presents the following problems: after the detection is finished, the sand in the detection hole needs to be taken out and screened again for the next use, so that the working labor intensity is high; in addition, due to the fluidity of sand, when the surface of the road surface to be dug is uneven, the detection pore volume cannot be accurately obtained.
Disclosure of Invention
The invention aims to provide a water injection type excavation volume detection device for detecting roadbed compactedness, which aims to solve the technical problem that in the prior art, the labor intensity is high because the excavation volume is obtained by sand filling and sand is manually taken out.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a road bed compactness detects uses water injection formula volume detection device that digs pit, includes water injection mechanism and measuring unit, and measuring unit includes the measuring unit casing, and the sealed outside that is fixed with on the measuring unit casing is used for paving the elastic membrane that the road bed corresponds the position, and water injection mechanism includes the water tank, is equipped with on the measuring unit casing to be used for the UNICOM the water route of water tank and elastic membrane inboard is provided with the water pump on the water route, and water tank and/or water route are connected with and are used for the measurement to the measuring transducer of the inboard water injection volume of corresponding elastic membrane.
The metering sensor is arranged between the water tank and the measuring unit shell and is a weighing sensor.
The water tank is suspended on the measuring unit shell through the weighing sensor.
The measuring unit shell comprises a handheld part and two working parts, a water tank is connected to the handheld part, the working parts are rotatably assembled on the handheld part, the two elastic membranes are respectively a first elastic membrane and a second elastic membrane which are arranged on the periphery of the working parts at intervals along the circumferential direction, and the first elastic membrane is a planar membrane structure which is used for paving the roadbed surface before the hole is dug in the hole area to be dug; the second elastic membrane is a cylindrical membrane structure used for fully paving the inner hole wall of the detection hole.
The two elastic membranes are evenly spaced along the circumference of the working portion.
The handheld part comprises a weighing water outlet pipe, the water path comprises an inner hole of the weighing water outlet pipe, the working part is rotatably sleeved on the weighing water outlet pipe, a water outlet is formed in the pipe wall of the weighing water outlet pipe, a first water channel communicated with the inner side of the first elastic membrane and a second water channel communicated with the inner side of the second elastic membrane are formed in the working part, and the working part is provided with a first station at which the first water channel is communicated with the water outlet and the second water channel is blocked and a second station at which the second water channel is communicated with the water outlet and the first water channel is blocked in the rotating process relative to the weighing water outlet pipe.
The working part is of a T-shaped structure with a transverse edge and a vertical edge, the first elastic membrane is arranged on the transverse edge, and the second elastic membrane is arranged on the vertical edge.
The periphery of the first elastic membrane on the working part is provided with a first reference plane, and the water injection type pit digging volume detection device also comprises a horizontal reference plate which is used for being attached to the first reference plane; the working part is provided with a second reference plane at the periphery of the second elastic membrane, and the water injection type pit digging volume detection device further comprises a reference cylinder which is arranged along the second reference plane in an attaching mode and sleeved on the periphery of the second elastic membrane.
The two measuring units are respectively a first measuring unit and a second measuring unit, the elastic membrane of the first measuring unit is a planar membrane structure used for fully paving the roadbed surface in front of the hole digging area to be dug, and the elastic membrane of the second measuring unit is a cylindrical membrane structure used for fully paving the inner hole wall of the detection hole.
The bottom of the measuring unit shell of the first measuring unit is provided with a first reference plane at the periphery of the elastic membrane, and the first measuring unit also comprises a horizontal reference plate which is used for being arranged on the upper surface of the lower side of the elastic membrane of the first measuring unit and is used for being attached to the first reference plane; the bottom of the measuring unit shell of the second measuring unit is provided with a second reference plane at the periphery of the elastic membrane, the second measuring unit further comprises a reference cylinder arranged on the lower side of the elastic membrane of the second measuring unit, and the reference cylinder is provided with a cylinder edge of which the upper surface is used for being attached to the second reference plane.
The invention has the beneficial effects that: when the device is used, the water pump injects liquid in the water tank to the inner side of the elastic membrane, the elastic membrane elastically deforms to fully cover the corresponding part of the roadbed, and the metering sensor obtains the water injection amount, so that the volume of the corresponding part, such as a pit digging position, is obtained.
Drawings
FIG. 1 is a schematic view of the condition of a roadbed before digging a pit according to the invention;
FIG. 2 is a schematic view showing the state of the first elastic film for inspecting the roadbed before the excavation of the pit in example 1 of the present invention;
FIG. 3 is a schematic view showing the fitting of the first elastic membrane to the reference plate in example 1;
FIG. 4 is a schematic view showing the state of the second elastic film for detecting the roadbed after the excavation in example 1;
FIG. 5 is a schematic view showing the fitting of the second elastic membrane to the reference cylinder in example 1;
fig. 6 is a schematic view showing a state where the second elastic film in fig. 5 is spread over the entire reference cylinder.
FIG. 7 is a schematic view showing the fitting of the hand-held portion with the water tank in embodiment 1;
FIG. 8 is a schematic view showing the cooperation of the working part with the first elastic film and the second elastic film in example 1
Fig. 9 is a schematic configuration diagram of embodiment 2 of the water injection type excavation volume detection apparatus of the present invention.
Detailed Description
An embodiment 1 of a water injection type pit digging volume detection device for roadbed compactness detection is shown in figure 1 ~ 8 and comprises a water injection mechanism and a measurement unit, wherein the measurement unit comprises a measurement unit shell, the measurement unit shell comprises a handheld part 13 and a working part 8 in the embodiment, the handheld part comprises a handle 15, a bearing water outlet pipe 21 is arranged at the bottom of the handle 15, and the working part is rotatably assembled on the bearing water outlet pipe.
In this embodiment, the water tank 18 is suspended from the handle by a load cell 19, which is a load cell. The water route is including the hole 20 of the outlet pipe of weighing, seting up in the inside hand (hold) water course 14 of hand (hold) and the lower extreme stretches into the leading water pipe 17 of water tank upside, water pump 16 sets up on leading water pipe 17, and leading water pipe 17 and 18 intervals of water tank set up, avoid producing frictional force between water tank and the leading water pipe and influence weighing sensor's the demonstration of weighing. The first elastic membrane 3 is a planar membrane structure which is used for paving the surface of the roadbed before the hole is dug in the hole area to be dug; the second elastic membrane 12 is a cylindrical membrane structure for filling the inner hole wall of the detection hole 27. The working part is of a T-shaped structure with a transverse edge 6 and a vertical edge 21, the first elastic membrane 3 is arranged on the transverse edge 6, the second elastic membrane 12 is arranged on the vertical edge 21, and the vertical edge forms a cylindrical support. The pipe wall of the weighing water outlet pipe is provided with a water outlet, the working part is provided with a first water channel 22 communicated with the inner side of the first elastic membrane and a second water channel 11 communicated with the inner side of the second elastic membrane, the water outlet comprises a first water outlet 24 corresponding to the axial position of the first water channel and a second water outlet corresponding to the axial position of the second water channel, the first water outlet and the second water outlet are arranged at intervals along the axial direction, and in the rotating process of the working part relative to the weighing water outlet pipe, the working part is provided with a first station at which the first water channel 22 is communicated with the water outlet 24 and the second water channel 11 is blocked, and a second station at which the second water channel 11 is communicated with the water outlet 24 and the first.
The working part is provided with a first reference plane 4 at the periphery of the first elastic membrane, and the water injection type pit digging volume detection device further comprises a horizontal reference plate 27 which is used for being attached to the first reference plane 4; the water injection type pit digging volume detection device further comprises a reference cylinder 10 which is arranged along a cylinder edge 25, is attached to the second reference plane 23 and is sleeved on the periphery of the second elastic film 12.
The pit digging volume detection device provided by the invention has the following use process: as shown in fig. 1, when the field density detection of the roadbed 1 is carried out outdoors, the pits 2 are often formed on the roadbed surface, and the problem of inaccurate volume detection data exists if the pits are directly dug to carry out the volume measurement of the detection holes. When the device is used, the working part is rotated to enable the first elastic membrane to face downwards, as shown in figure 2, the water pump works, water is injected into the inner side of the first elastic membrane through the water channel, and the first elastic membrane is enabled to be fully paved on the upper end of the whole hole digging area under the pressure of liquid on the upper side of the first elastic membraneThe weight difference of the water tank can be detected in the process of the weighing sensor, so that the volume V of the uneven part of the front surface of the hole to be dug in the hole area to be dug is converted1. Then, digging a hole in the region to be dug, digging out a detection hole 27, rotating the working part to enable the second elastic membrane to face downwards, enabling the second elastic membrane to be arranged in the detection hole, at the moment, enabling the second water channel to be communicated with the water outlet, enabling the first water channel to be blocked, enabling the water pump to work to be communicated, injecting water into the inner side of the second elastic membrane through the water channel, enabling the second elastic membrane to cover the whole detection hole, and obtaining the volume V of the bottom of the detection hole from the surface of the roadbed through the front-back weighing difference of the weighing sensor and the volume sum of the columnar supports2Then the volume of the soil actually excavated V = V2- V1. The use of the columnar support can reduce the use amount of liquid required by filling the second elastic membrane, on one hand, the whole detection unit is lighter in weight and convenient to move, and on the other hand, the elastic membrane is prevented from aging and deforming easily due to the fact that more liquid exerts pressure on the second elastic membrane for a long time.
In the invention, the horizontal reference plate and the reference cylinder are arranged to obtain a reference scale, because in the actual use process, the deformation capability of the silica gel is influenced by factors such as temperature, sunshine, the service life of the silica gel and the like, and in addition, the water leakage and other factors exist, and all the factors can cause different measurement conditions in each usenThen V isnEquivalent to zero point scale, when the first elastic film is fully paved on the roadbed surface of the hole area to be excavated, the measured water injection volume is VmThen V is1=Vm-Vn. For the second elastic membrane, the volume of the inner cavity of the reference cylinder is fixed, before the second elastic membrane is paved on the whole detection hole, in order to obtain the deformation difference of the second elastic membrane, the reference cylinder can be firstly propped against the second reference plane of the second annular pressing plate, the whole reference cylinder is paved through the second elastic membrane, and at the moment, the sum of the volume of the water injection and the volume of the columnar support is VaI.e. the measured volume of the reference cylinder, assumed to be referenceThe volume of the inner cavity of the barrel is VbIf V isaAnd VbIf the difference is not consistent, a volume measurement error is present during detection, and the volume measurement error = Va-VbWhen the second elastic film is fully paved on the whole detection hole, the second elastic film is correspondingly obtained to obtain a measurement volume VcThen V is2=Vc-（Va-Vb）。
In other embodiments of the invention, the water tank may also be seated on the handle by a weighing sensor; the metering sensor used for metering the water injection amount can also be not a weighing sensor, such as a flow sensor arranged on a water path or a water pump, and the water injection amount is calculated through the flow sensor and the water injection time; the included angle between the first elastic film and the second elastic film may also be other than 180 degrees, such as 90 degrees, 120 degrees, and the like; when digging a hole in a flat road surface, the first elastic membrane may not be provided.
Fig. 9 shows an example 2 of a water injection type excavation volume detection device for roadbed compactness detection: embodiment 2 differs from embodiment 1 in that there are two measurement units, namely a first measurement unit 30 and a second measurement unit 31, the first measurement unit having a first elastic membrane and the second measurement unit having a second elastic membrane, that is, in embodiment 1, the first elastic membrane and the second elastic membrane are integrated on one substrate, and in embodiment 2, the first elastic membrane 3 and the second elastic membrane 12 are respectively disposed on separate substrates. The waterway comprises a first water pipe 33 and a second water pipe 34, wherein the first water pipe 33 is communicated with the inner side of the first elastic membrane, the second water pipe 34 is communicated with the inner side of the second elastic membrane, the first water pipe 33 and the second water pipe 34 are hoses, the first water pipe and the second water pipe are both provided with a switch valve 35, a substrate of the first measuring unit is provided with a first flow guide channel 36 communicated with the first water pipe and the inner side of the first elastic membrane, and a substrate of the second measuring unit is provided with a second flow guide channel 37 communicated with the second water pipe and the inner side of the second elastic membrane. The water tank 18 is connected to a handle 32 by a load cell 19.

Claims (10)

1. The utility model provides a road bed compactness detects with water injection formula volume detection device that digs pit which characterized in that: including water injection mechanism and measuring unit, measuring unit includes the measuring unit casing, and the sealed outside that is fixed with on the measuring unit casing is used for spreading the elastic membrane that the road bed corresponds the position, and water injection mechanism includes the water tank, is equipped with on the measuring unit casing to be used for the UNICOM the water route inboard of water tank and elastic membrane is provided with the water pump on the water route, is connected with the measurement sensor who is used for the measurement to the inboard water injection volume of corresponding elastic membrane on water tank and/or the water route.
2. The water injection type excavation volume detection device according to claim 1, characterized in that: the metering sensor is arranged between the water tank and the measuring unit shell and is a weighing sensor.
3. The water injection type excavation volume detection device according to claim 2, characterized in that: the water tank is suspended on the measuring unit shell through the weighing sensor.
4. The water injection type pit volume detecting device according to claim 1 or 2, wherein: the measuring unit shell comprises a handheld part and two working parts, a water tank is connected to the handheld part, the working parts are rotatably assembled on the handheld part, the two elastic membranes are respectively a first elastic membrane and a second elastic membrane which are arranged on the periphery of the working parts at intervals along the circumferential direction, and the first elastic membrane is a planar membrane structure which is used for paving the roadbed surface before the hole is dug in the hole area to be dug; the second elastic membrane is a cylindrical membrane structure used for fully paving the inner hole wall of the detection hole.
5. The water injection type excavation volume detection device according to claim 4, characterized in that: the two elastic membranes are evenly spaced along the circumference of the working portion.
6. The water injection type excavation volume detection device according to claim 4, characterized in that: the handheld part comprises a weighing water outlet pipe, the water path comprises an inner hole of the weighing water outlet pipe, the working part is rotatably sleeved on the weighing water outlet pipe, a water outlet is formed in the pipe wall of the weighing water outlet pipe, a first water channel communicated with the inner side of the first elastic membrane and a second water channel communicated with the inner side of the second elastic membrane are formed in the working part, and the working part is provided with a first station at which the first water channel is communicated with the water outlet and the second water channel is blocked and a second station at which the second water channel is communicated with the water outlet and the first water channel is blocked in the rotating process relative to the weighing water outlet pipe.
7. The water injection type excavation volume detection device according to claim 6, characterized in that: the working part is of a T-shaped structure with a transverse edge and a vertical edge, the first elastic membrane is arranged on the transverse edge, and the second elastic membrane is arranged on the vertical edge.
8. The water injection type excavation volume detection device according to claim 4, characterized in that: the periphery of the first elastic membrane on the working part is provided with a first reference plane, and the water injection type pit digging volume detection device also comprises a horizontal reference plate which is used for being attached to the first reference plane; the working part is provided with a second reference plane at the periphery of the second elastic membrane, and the water injection type pit digging volume detection device further comprises a reference cylinder which is arranged along the second reference plane in an attaching mode and sleeved on the periphery of the second elastic membrane.
9. The water injection type pit volume detecting device according to claim 1 or 2, wherein: the two measuring units are respectively a first measuring unit and a second measuring unit, the elastic membrane of the first measuring unit is a planar membrane structure used for fully paving the roadbed surface in front of the hole digging area to be dug, and the elastic membrane of the second measuring unit is a cylindrical membrane structure used for fully paving the inner hole wall of the detection hole.
10. The water injection type excavation volume detection device according to claim 9, characterized in that: the bottom of the measuring unit shell of the first measuring unit is provided with a first reference plane at the periphery of the elastic membrane, and the first measuring unit also comprises a horizontal reference plate which is used for being arranged on the upper surface of the lower side of the elastic membrane of the first measuring unit and is used for being attached to the first reference plane; the bottom of the measuring unit shell of the second measuring unit is provided with a second reference plane at the periphery of the elastic membrane, the second measuring unit further comprises a reference cylinder arranged on the lower side of the elastic membrane of the second measuring unit, and the reference cylinder is provided with a cylinder edge of which the upper surface is used for being attached to the second reference plane.
CN201910969576.1A 2019-10-12 2019-10-12 Roadbed compactness detects with water injection formula volume detection device that digs pit Pending CN110725346A (en)

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Application Number Priority Date Filing Date Title
CN201910969576.1A CN110725346A (en) 2019-10-12 2019-10-12 Roadbed compactness detects with water injection formula volume detection device that digs pit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910969576.1A CN110725346A (en) 2019-10-12 2019-10-12 Roadbed compactness detects with water injection formula volume detection device that digs pit

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Publication Number Publication Date
CN110725346A true CN110725346A (en) 2020-01-24

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CN201910969576.1A Pending CN110725346A (en) 2019-10-12 2019-10-12 Roadbed compactness detects with water injection formula volume detection device that digs pit

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