CN210625774U - Hole digging volume detection device for detecting compaction degree by digging method - Google Patents
Hole digging volume detection device for detecting compaction degree by digging method Download PDFInfo
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- CN210625774U CN210625774U CN201921803192.4U CN201921803192U CN210625774U CN 210625774 U CN210625774 U CN 210625774U CN 201921803192 U CN201921803192 U CN 201921803192U CN 210625774 U CN210625774 U CN 210625774U
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Abstract
The utility model relates to a hole digging volume detection device for detecting compaction degree of pit digging method, including the detection device casing, the detection device casing has vertical arrangement's spacing chamber, be provided with the push rod that can reciprocate in the spacing chamber, be connected with tubular structure's central elastic membrane on the push rod, still be connected with on the detection device casing and be located central elastic membrane outlying peripheral elastic membrane, central elastic membrane reciprocates the in-process along with the push rod and has bottom and peripheral elastic membrane bottom parallel and level in order to be paved the first work position on waiting to dig the regional surface of hole with peripheral elastic membrane together when the water injection, central elastic membrane reciprocates the process along with the push rod and still has to stretch into in corresponding inspection hole in order to be paved alone when the water injection the second work position of inspection hole. The utility model provides an among the prior art through irritating husky obtaining the volume of digging a pit still need manually take out the sand and lead to the technical problem that intensity of labour is big.
Description
Technical Field
The utility model relates to a method of digging pit road bed compactness detects with digging hole volume detection device.
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.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a method of digging pit compactness detects with volume detection device that digs pit to it still needs to be manual to take out the sand and leads to the technical problem that intensity of labour is big to obtain the volume of digging pit through irritating the sand among the solution prior art.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides a method of digging pit compactness detects with digging hole volume detection device, including the detection device casing, the detection device casing has vertical arrangement's spacing chamber, be provided with the push rod that can reciprocate in the spacing chamber, be connected with tubular structure's central elastic membrane on the push rod, still be connected with the peripheral elastic membrane that is located central elastic membrane outlying on the detection device casing, central elastic membrane reciprocates the in-process along with the push rod and has bottom and peripheral elastic membrane bottom parallel and level in order to fill up the first work position of treating the regional surface of digging hole with peripheral elastic membrane when the water injection together, central elastic membrane reciprocates the process along with the push rod and still has to stretch into in corresponding inspection hole in order to fill up alone when the water injection the second work position of inspection hole.
Still include water injection mechanism, water injection mechanism includes the water tank and is provided with the water route of water pump, and the water route is including connecting the water tank is connected with the inboard first water route of peripheral elastic membrane with be connected the water tank is connected with the inboard second water route of central elastic membrane, and water tank and/or water epaxial be connected with be used for the measurement to the measuring transducer who corresponds the inboard water injection quantity of elastic membrane.
Switch valves are arranged on the first water path and the second water path.
The push rod is internally provided with a push rod water injection channel which is communicated with the inner side of the central elastic membrane to realize water injection to the inner side of the central elastic membrane.
The peripheral elastic membrane is of a hollow annular structure.
The bottom of the detection device shell is provided with a first datum plane at the periphery of the peripheral elastic membrane, and the hole digging volume detection device further comprises a horizontal datum plate detachably connected with the first datum plane.
The utility model has the advantages that: when the hole digging device is used, as the position of a hole digging area possibly is not a plane and is provided with a recess or a bulge, the push rod is firstly moved to adjust the height of the central elastic membrane, so that the bottom of the central elastic membrane is flush with the bottom of the peripheral elastic membrane and is positioned at a first working position, the central elastic membrane and the peripheral elastic membrane are paved on the upper side of the hole digging area, water is injected into the inner sides of the central elastic membrane and the peripheral elastic membrane, the central elastic membrane and the peripheral elastic membrane elastically deform to be paved on the upper side of the hole digging area, and the volume V of the uneven part of the front surface of the hole digging area is obtained through the water injection amount1. Then, digging a hole in the region to be dug, digging a detection hole, moving the push rod to enable the central elastic membrane to stretch into the detection hole, injecting water into the inner side of the central elastic membrane to enable the central elastic membrane to deform and fully cover the whole detection hole, and obtaining V according to the water injection amount2Then the volume of the soil actually excavated V = V2- V1In the utility model, the corresponding digging is not neededAnd sand is injected in the process, so that subsequent sand taking operation does not exist, and the labor intensity of pit digging volume measurement is greatly reduced.
Drawings
FIG. 1 is a schematic view of the state of the roadbed before digging no pit in the utility model;
fig. 2 is a schematic structural view of an embodiment of the present invention;
fig. 3 is a diagram of the use state of the central elastic membrane of the present invention in the first working position;
fig. 4 is a diagram of the usage state of the center elastic membrane of the present invention in the second working position.
Detailed Description
An embodiment of a hole digging volume detection device for detecting compaction degree by a pit digging method is shown in figures 1-4: the detection device comprises a detection device shell, the detection device shell comprises a middle barrel 14 of which the bottom is fixed with a connecting turning edge 16, a limiting cavity 22 in vertical arrangement is formed in the inner cavity of the middle barrel 14, the lower side of the connecting turning edge 16 is connected with an annular pressing plate 17, a push rod 11 capable of moving up and down is arranged in the limiting cavity 22, a central elastic membrane 15 of a cylindrical structure is connected onto the push rod, a peripheral elastic membrane 20 located on the periphery of the central elastic membrane is fixedly clamped between the annular pressing plate 17 and the connecting turning edge 16, the peripheral elastic membrane is of a 20-hollow annular structure, the central elastic membrane 15 has a first working position in which the bottom is flush with the bottom of the peripheral elastic membrane 20 so as to be paved with the peripheral elastic membrane 20 together when water is injected, and the central elastic membrane 15 also has a second working position which extends into a corresponding detection hole 21 so as to be paved with the water alone when water is injected when the central elastic membrane 15 moves up. The lower plate surface of the annular pressure plate forms a reference plane 18, and the hole digging volume detection device further comprises a horizontal reference plate 19 detachably connected with the reference plane, wherein in the embodiment, the horizontal reference plate 19 is detachably connected with the annular pressure plate through bolts.
Dig hole volume detection device still includes water injection mechanism, and water injection mechanism includes water tank 3 and the water route that is provided with water pump 5, and the water route is including connecting the water tank is with the inboard first water route 9 of peripheral elastic membrane and be connected the inboard second water route 8 of water tank and central elastic membrane, in this embodiment, first water route 9 and second water route 8 are hose construction, all be provided with the ooff valve on first water route and the second water route, the push rod include with middle bobbin top direction removal complex body of rod 11 and set up in the body of rod lower extreme with spacing chamber direction removal complex piston block 12, the diameter of piston block 12 is greater than the diameter of the body of rod 11, the top of central elastic membrane is fixed in the piston rod bottom, be equipped with in the push rod with central elastic membrane inboard communicate with each other in order to realize the inboard water injection push rod passageway 13 of water injection.
The water injection mechanism is still including being used for the handheld handle 6 of operating personnel, and water tank 3 hangs on hand through weighing sensor 7, and the water route is including being fixed in leading water pipe 4 in the water tank is stretched into to the lower extreme on hand, and water pump 5 sets up on leading water pipe 4, and leading water pipe 4 and water tank interval arrangement do not produce frictional force with the water tank contact to leading water pipe 4, can avoid this frictional force to influence weighing sensor's indicating value like this. The weighing sensor forms a metering sensor for metering the water injection quantity to the inner side of the corresponding elastic membrane, and the working principle of the weighing sensor is that the water injection volume is converted through the weight difference before and after water injection.
Utility model discloses well volume detection device that digs pit's use does: 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. During the use, remove the push rod earlier, adjust the height of central elastic membrane for the bottom of central elastic membrane is the parallel and level with the bottom of peripheral elastic membrane, and central elastic membrane is in first work position this moment, as shown in fig. 3, the water pump work, through water route to central elastic membrane and peripheral elastic membrane water injection, make central elastic membrane and peripheral elastic membrane fill up whole hole region upper end of digging together, the weighing sensor in-process can detect the weight difference of water tank, thereby calculate the volume V of waiting to dig hole region front surface unevenness part of digging1. Then, digging a hole in the region to be dug, digging a detection hole 21, moving a push rod downwards, driving a central elastic membrane to move downwards and extend by the push rod, placing the central elastic membrane in the detection hole, injecting water only to the inner side of the central elastic membrane by a water injection mechanism, and injecting water through the central elastic membraneElastically deforming to fill the entire inspection hole, and calculating the volume V of the bottom of the inspection hole from the surface of the roadbed by the difference between the front and rear weights of the weighing sensor as shown in FIG. 42Then the volume of the soil actually excavated V = V2- V1. Two elastic membranes are adopted because the shape difference between the unevenness of the roadbed surface before pit digging and the shape of the detection hole after pit digging is larger, if only one elastic membrane is adopted, the elastic membrane is required to have overlarge elastic deformation capacity, on one hand, the requirement on the material performance is too high, the material is easy to expand and crack, and in addition, when the elastic membrane shrinks, wrinkles are easy to generate to cause the roadbed surface to be fully paved, and the measurement precision is influenced.
The utility model discloses well horizontal reference plate is in order to obtain a reference scale, because in the in-service use process, because the temperature, the sunshine, factors such as silica gel life can influence the deformability of silica gel, in addition the existence of factors such as leaking in addition, all kinds of factors can lead to the measurement situation difference of using at every turn, during the use, support horizontal reference plate on the reference plane of first annular clamp plate, to central elastic membrane and peripheral elastic membrane water injection, when central elastic membrane and peripheral elastic membrane fill up horizontal reference plate, the water injection volume is VnThen V isnEquivalent to zero point scale, when the roadbed surface of the hole area to be dug is fully paved with the central elastic membrane and the peripheral elastic membrane, the measured water injection volume is VmThen V is1=Vm-Vn。
In other embodiments of the utility model, the water tank can be also arranged on the handle through the 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; of course, the water injection mechanism may not be part of the technical solution of the excavation volume detection device, for example, an operator purchases a syringe by himself, and water is injected into the central elastic membrane and the peripheral elastic membrane through the syringe with scales.
Claims (4)
1. The utility model provides a method of digging pit compactness detects with digging hole volume detection device which characterized in that: including the detection device casing, the detection device casing has vertical arrangement's spacing chamber, be provided with the push rod that can reciprocate in the spacing chamber, be connected with tubular structure's central elastic membrane on the push rod, still be connected with the peripheral elastic membrane that is located central elastic membrane outlying on the detection device casing, central elastic membrane reciprocates the in-process along with the push rod and has the bottom and peripheral elastic membrane bottom parallel and level in order to fill up the first work position of waiting to dig the regional surface of hole with peripheral elastic membrane together when the water injection, central elastic membrane reciprocates the process along with the push rod and still has to stretch into in corresponding inspection hole in order to fill up alone when the water injection the second work position of inspection hole.
2. The excavation volume detection device according to claim 1, wherein: the push rod is internally provided with a push rod water injection channel which is communicated with the inner side of the central elastic membrane to realize water injection to the inner side of the central elastic membrane.
3. The excavation volume detection device according to claim 1, wherein: the peripheral elastic membrane is of a hollow annular structure.
4. The excavation volume detection device according to any one of claims 1 to 3, wherein: the bottom of the detection device shell is provided with a first datum plane at the periphery of the peripheral elastic membrane, and the hole digging volume detection device further comprises a horizontal datum plate detachably connected with the first datum plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2019217061123 | 2019-10-12 | ||
| CN201921706112 | 2019-10-12 |
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| CN210625774U true CN210625774U (en) | 2020-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593238A (en) * | 2019-10-12 | 2019-12-20 | 河南交院工程技术有限公司 | Hole digging volume detection device for detecting compaction degree by digging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593238A (en) * | 2019-10-12 | 2019-12-20 | 河南交院工程技术有限公司 | Hole digging volume detection device for detecting compaction degree by digging method |
| CN110593238B (en) * | 2019-10-12 | 2020-10-02 | 河南交院工程技术有限公司 | Hole digging volume detection device for detecting compaction degree by digging method |
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