CN112098256B - Hammer calibrating device of compaction instrument - Google Patents
Hammer calibrating device of compaction instrument Download PDFInfo
- Publication number
- CN112098256B CN112098256B CN202011166557.4A CN202011166557A CN112098256B CN 112098256 B CN112098256 B CN 112098256B CN 202011166557 A CN202011166557 A CN 202011166557A CN 112098256 B CN112098256 B CN 112098256B
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- China
- Prior art keywords
- hammer
- force transducer
- beam type
- bottom plate
- type force
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- 238000005056 compaction Methods 0.000 title claims abstract description 35
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010426 asphalt Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a compaction device hammer calibration device, which comprises a beam type force transducer, wherein the length of the beam type force transducer extends along the left-right direction, the compaction device hammer calibration device further comprises a hammer placing plate and a bottom plate which are arranged up and down, the hammer placing plate and the bottom plate are of concave structures, a guide rod avoidance groove for avoiding corresponding guide rods in the front-back direction is formed by concave grooves, the upper plate surfaces of the guide rod avoidance groove on the rear side, the left side and the right side are used for being in contact with the hammer, the right end of the hammer placing plate is fixedly connected with the right end of the beam type force transducer, an upper deformation gap is formed between the lower side of the left end of the hammer placing plate and the upper side of the left end of the beam type force transducer, the left end of the bottom plate is fixedly connected with the left end of the beam type force transducer, and a lower deformation gap is formed between the upper side of the right end of the bottom plate and the lower side of the right end of the beam type force transducer. The invention provides a hammer calibrating device of a compaction instrument, which can calibrate a hammer in the compaction instrument.
Description
Technical Field
The invention relates to a hammer calibrating device of a compaction instrument in the field of calibration verification.
Background
The compaction device is a building equipment, which is divided into a heavy manual compaction device and a numerical control multifunctional electric compaction device, and is mainly used for measuring the optimal moisture content of compacted soil and the weight of the compacted soil in unit volume, and is used as the basis for controlling the soil humidity and specifying the minimum density in the roadbed and the filling soil of the building.
According to its usage can divide into geotechnical compaction appearance and hit marshall compaction appearance, publication No. CN4634689A, application name is "an asphalt mixture marshall compaction appearance metering device and metering method", disclose an asphalt mixture marshall compaction appearance, including mound, compaction head, guide bar, cover the drive hammer on the guide bar, locate the stopper on guide bar upper portion, compaction head and guide bar are integrated into one piece structure, during the test, asphalt mixture test piece is put between mound and compaction head, will drive hammer along the guide bar to certain height, drive hammer free fall strikes the compaction head, thereby the effect of compaction head to asphalt mixture test piece is tested. It follows that the weight of the hammer itself is a critical factor in determining the accuracy of the compaction machine test, and therefore, a regular calibration of the weight of the hammer is required, however, due to the presence of the guide bar, there is currently a lack of effective means for calibrating the hammer, which is time-consuming and laborious if the hammer is removed from the guide bar for calibration, and the accuracy of the calibration is affected by the removal from the working environment of the hammer itself.
Disclosure of Invention
The invention aims to provide a hammer calibrating device of a compaction instrument, which can calibrate a hammer in the compaction instrument.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a compaction appearance hammer calibrating device, beam type force transducer including length along controlling the direction extension, compaction appearance hammer calibrating device still includes the hammer of arranging from top to bottom places board and bottom plate, hammer places board and bottom plate and is the concave shape structure, the recess of concave shape structure forms and is used for dodging the guide bar of corresponding guide bar in the fore-and-aft direction and dodges the groove, the guide bar dodges the groove rear side, the upper plate face is used for with the hammer contact on the board is placed to the left side and the right-hand member of right side, the hammer is placed the right-hand member of board and is fixed connection with beam type force transducer right-hand member, the hammer is placed and is had the upside clearance of warping between the left end downside of board and the left end upside of beam type force transducer, the left end of bottom plate and the left end fixed connection of beam type force transducer have the downside clearance of warping between the right-hand member upside of bottom plate and the right-hand member downside of beam type force transducer.
The right rear corner position of the hammer placing plate is fixedly connected with the right end of the beam type force transducer, and an upper side deformation gap is formed between the left rear corner of the hammer placing plate and the left end of the beam type force transducer.
The left rear corner of the bottom plate is fixedly connected with the left end of the beam type force transducer, and a lower side deformation gap is formed between the right rear corner of the bottom plate and the right end of the beam type force transducer.
The left rear corner position of the hammer rest plate is at a bottom higher than the right rear corner position of the hammer rest plate so that the upper side deformation gap is formed.
The right rear angular position of the bottom plate has a top lower than the left rear angular position of the bottom plate such that the lower deformation gap is formed.
Three height-adjusting supporting legs distributed in a triangular shape are arranged on the bottom plate.
The beneficial effects of the invention are as follows: when the calibrating device is used, an operator lifts the height of the hammer, the calibrating device is arranged on the lower side of the hammer, the guide bar avoiding grooves on the hammer placing plate and the bottom plate are used for avoiding the guide bars, the upper plate surfaces of the hammer placing plate on the rear side, the left side and the right side of the guide bar avoiding grooves are all used for being in contact with the hammer to bear weight, so that the hammer can be stably placed on the hammer placing plate, the contact area between the hammer placing plate and the hammer is larger than half of the sectional area of the hammer, the problem of inaccurate weighing caused by unstable placement of the hammer is avoided, the weight of the hammer is transferred to the right end of the beam type force transducer through the hammer placing plate, the right end of the beam type force transducer is deformed relative to the left end of the beam type force transducer, and the weight of the hammer can be weighed by using the beam type force transducer with one length extending along the left-right direction, and the hammer is calibrated.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of a hammer calibration device of a compaction apparatus according to the present invention;
FIG. 2 is a schematic illustration of the cooperation of the base plate and beam load cell of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a use state diagram of FIG. 3;
fig. 5 is a schematic structural view of example 2 of the hammer calibrating device of the compaction apparatus according to the present invention.
Detailed Description
Example 1 of the hammer calibration device of the compaction apparatus of the present invention is shown in fig. 1 to 4: including the length along the beam type force transducer 13 that left and right sides direction extends, beam type force transducer is electronic strain force transducer, and it includes the length along the beam body that can elastic deformation who extends of left and right sides direction, is provided with the deformation hole on the beam body, and deformation hole department pastes has resistance strain gauge, and beam type force transducer in this embodiment can select "electronic scale CZL623" that guangdong Hua Lanhai electric measurement science and technology company produced, and beam type force transducer belongs to prior art, and no more detailed description is here.
The hammer calibrating device of the compaction apparatus further comprises a hammer placing plate 15 and a bottom plate 5 which are arranged up and down, in this embodiment, the hammer placing plate 15 and the bottom plate 5 are of a concave structure, the concave structure is provided with a concave recess which is concave inwards towards the rear, the concave recess of the concave structure forms a guide bar avoiding groove 17 for avoiding a corresponding guide bar 18 in the front-rear direction, and the upper plate surfaces of the hammer placing plates on the rear side, the left side and the right side of the guide bar avoiding groove are used for being in contact with the hammer 16.
The right rear angle position 14 of the hammer placing plate is fixedly connected with the right end of the beam type force transducer, and the bottom of the left rear angle position 2 of the hammer placing plate is higher than the right rear angle position of the hammer placing plate, so that an upper side deformation gap 1 is formed between the bottom of the left rear angle position 2 of the hammer placing plate and the upper part of the left end 3 of the beam type force transducer; the left rear corner position 4 of the bottom plate is fixedly connected with the left end of the beam load cell, and the bottom of the right rear corner position 12 of the bottom plate is higher than the left rear corner position 4 of the bottom plate, so that a lower side deformation gap 11 is formed between the right rear corner bottom position 12 of the bottom plate and the upper part of the right end 10 of the beam load cell.
Three height-adjusting supporting legs which are distributed in a triangular shape are arranged on the bottom plate, wherein the two height-adjusting supporting legs 6 which are positioned at the front are positioned at the left side and the right side of the guide bar avoiding groove, and the height-adjusting supporting legs 9 which are positioned at the rear are positioned at the lower side of the beam type force transducer. In this embodiment, in order to improve the support stability of the three height adjustment legs, the span between the height adjustment leg on the rear side and the two height adjustment legs on the front side is appropriately increased, the height adjustment leg 9 on the rear side is disposed on the lower side of the beam load cell 13, because the thickness of the bottom plate is thinner, in order to increase the adjustment amount of the corresponding height adjustment leg, the height adjustment leg on the rear side includes a fixing screw 7 fixedly connected with the bottom plate, an adjustment nut 8 is screwed on the fixing screw, and the two height adjustment legs on the front side include an adjustment screw 19 screwed with the bottom plate.
Example 2 of the hammer calibration device of the compaction apparatus according to the present invention is shown in fig. 5: embodiment 2 differs from embodiment 1 in that the rear located height adjustment leg 9 is located on the front side of the beam load cell, the rear located height adjustment leg comprising an adjustment screw threaded with the base plate.
When the hammer calibration device is used, as shown in fig. 4, an operator lifts the hammer, places the hammer calibration device of the compaction instrument on the lower side of the hammer, and is positioned in the guide bar avoiding grooves of the hammer placing plate and the bottom plate, wherein the guide bars are matched with the hammer in a guiding manner, and the hammer placing plates on the left side, the right side and the rear side of the guide bar avoiding grooves can be matched with the hammer in a contact manner, that is, half of the sectional area of the hammer is supported by the hammer placing plate, the hammer is stably supported by the hammer placing plate, a foundation is provided for accurate calibration, the weight of the hammer is transferred to the right end of the beam type force transducer through the hammer placing plate, and the right end of the beam type force transducer generates elastic deformation relative to the left end, so that the weight of the hammer is obtained.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A compaction instrument hammer calibrating device is characterized in that: including the length along the beam type force transducer who extends about the direction, the impact compaction appearance hammer calibrating device still includes that the drive hammer that arranges from top to bottom places board and bottom plate, drive hammer places board and bottom plate and is the recess type structure, recess formation that the recess type was constructed is used for dodging the guide bar of corresponding guide bar in the fore-and-aft direction dodging the groove, the guide bar dodges the groove rear side, the left side and the drive hammer of right side place the board face and be used for with the drive hammer contact on the board, the right-hand member and beam type force transducer right-hand member fixed connection of drive hammer place the board, have the upside between the left end downside of drive hammer place the board and the left end upside of beam type force transducer, have the downside between the left end upside of bottom plate and the left end fixed connection of beam type force transducer, the right-hand member upside of bottom plate and the right end downside of beam type force transducer have the downside deformation clearance, the right rear angle position of drive hammer place the board and the right-hand member fixed connection of force transducer, the left rear angle position of upper side deformation clearance forms between the left rear angle of drive hammer place the board and the left end of beam type force transducer, the left rear angle position of bottom plate and the left end fixed connection of force transducer, the lower side deformation clearance forms between the right side rear angle and the right end of beam type force transducer and the right side of beam type force transducer of the right side.
2. The compaction apparatus hammer calibration device according to claim 1, wherein: the left rear corner position of the hammer rest plate is at a bottom higher than the right rear corner position of the hammer rest plate so that the upper side deformation gap is formed.
3. The compaction apparatus hammer calibration apparatus according to claim 2, wherein: the right rear angular position of the bottom plate has a top lower than the left rear angular position of the bottom plate such that the lower deformation gap is formed.
4. The compaction apparatus hammer calibration device according to claim 1, wherein: three height-adjusting supporting legs distributed in a triangular shape are arranged on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166557.4A CN112098256B (en) | 2020-10-27 | 2020-10-27 | Hammer calibrating device of compaction instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166557.4A CN112098256B (en) | 2020-10-27 | 2020-10-27 | Hammer calibrating device of compaction instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112098256A CN112098256A (en) | 2020-12-18 |
| CN112098256B true CN112098256B (en) | 2024-06-04 |
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ID=73784779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011166557.4A Active CN112098256B (en) | 2020-10-27 | 2020-10-27 | Hammer calibrating device of compaction instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN112098256B (en) |
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| JPH01185423A (en) * | 1988-01-20 | 1989-07-25 | Nittoc Constr Co Ltd | Method for measuring ground supporting strength by utilizing boring hole |
| US5293007A (en) * | 1992-04-02 | 1994-03-08 | Stress-Tek, Inc. | Method for moment balancing a parallel beam load cell and the article produced thereby |
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| CN112098256A (en) | 2020-12-18 |
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Country or region after: China Address after: No. 10 Baifo Road, Guancheng District, Zhengzhou City, Henan Province, 450000 Applicant after: Henan Institute of Metrology and Testing Science Address before: No.21 Huayuan Road, Jinshui District, Zhengzhou City, Henan Province Applicant before: HENAN PROVINCE INSTITUTE OF METROLOGY Country or region before: China |
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