CN216847204U - Experimental positioner of dynamic elasticity modulus - Google Patents
Experimental positioner of dynamic elasticity modulus Download PDFInfo
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- CN216847204U CN216847204U CN202123434979.8U CN202123434979U CN216847204U CN 216847204 U CN216847204 U CN 216847204U CN 202123434979 U CN202123434979 U CN 202123434979U CN 216847204 U CN216847204 U CN 216847204U
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- elastic modulus
- centre gripping
- positioning hole
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Abstract
The utility model discloses an experimental positioner of dynamic elasticity modulus, including the detection case that is used for placing the test piece that detects, can dismantle on the detection case and be connected with two centre gripping subassemblies, be first centre gripping subassembly and second centre gripping subassembly respectively, be connected with excitation transducer and receiving transducer on first centre gripping subassembly and the second centre gripping subassembly respectively. The utility model discloses a carry out the accurate positioning to the detection test piece that moves elastic modulus, can guarantee to move the detection site of elastic modulus experimental well excitation transducer and receiving transducer and the last detection site unanimous, quick accurate detection.
Description
Technical Field
The utility model relates to a construction detection device, concretely relates to move experimental positioner of elastic modulus for the survey station of exciting transducer and receiving transducer on the concrete test block carries out pinpointing in the concrete moves the experimental concrete elastic modulus.
Background
The concrete dynamic elastic modulus test adopts a prism test piece with the size of 100mm multiplied by 400mmn, the mass and the size of the test piece are firstly measured, after the mass and the size of the test piece are measured, the test piece is placed at the center of a support body, the forming surface is upward, a measuring rod of an exciting transducer is slightly pressed at 1/2 of the center line of the long side surface of the test piece, and the measuring rod of a receiving transducer is slightly pressed at the position 5mm away from the end surface of the long side surface of the test piece. Before the measuring rod contacts the test piece, a thin layer of butter or Vaseline is preferably coated on the contact surface of the measuring rod and the test piece to serve as a coupling medium, and the pressure of the measuring rod is controlled based on the fact that noise does not appear. The connection and relative positions of the components of the dynamic elasticity modulus tester are in accordance with the specification of figure 1.
In the dynamic elastic modulus test, the positions of prism test pieces with the size of 100mm multiplied by 400mmn are manually measured by a ruler and then marked on the surface of concrete by a marker pen, so that the test is complicated and delays time. Particularly, in the quick freezing method detection, the concrete needs to be subjected to a dynamic elastic modulus once after being subjected to a freezing-thawing cycle for 25 times, a group of test pieces with the freezing resistance level of 200 times are often subjected to a plurality of times, and the data can be more accurate if the data can be obtained at the same point every time. However, in the anti-freezing test, the surface of the concrete is sometimes frozen, so that the mark on the surface of the concrete falls off, and the accuracy of the dynamic elastic modulus data of the concrete is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the experimental location problem of the measurement station of exciting transducer and receiving transducer among the concrete dynamic elastic modulus, provide an experimental positioner of dynamic elastic modulus.
The utility model provides a test positioner of dynamic elasticity modulus, is including being used for placing the detection case that detects the test piece, can dismantle on the detection case and be connected with two centre gripping subassemblies, is first centre gripping subassembly and second centre gripping subassembly respectively, is connected with excitation transducer and receiving transducer on first centre gripping subassembly and the second centre gripping subassembly respectively.
The further technical scheme is as follows: the detection box comprises a bottom plate and three baffles, the three baffles are respectively arranged on the front side, the rear side and the left side of the bottom plate, and two through holes respectively corresponding to the first clamping assembly and the second clamping assembly are formed in the front side baffle.
The further technical scheme is as follows: the detection box is vertically connected with a fixing plate, the fixing plate is provided with a first positioning hole and a second positioning hole, and the first clamping assembly and the second clamping assembly are respectively connected to the first positioning hole and the second positioning hole.
The further technical scheme is as follows: the first positioning hole is arranged in the vertical extending direction of the middle point of the long edge of the bottom of the detection box, and the second positioning hole is arranged in the vertical extending direction of the position 5cm away from the end part of the long edge of the bottom of the detection box.
The further technical scheme is as follows: the first clamping assembly and the second clamping assembly comprise a screw rod and a clamp, and the screw rod is connected to the bottom of the clamp; the screw rods of the first clamping assembly and the second clamping assembly are respectively connected with the first positioning hole and the second positioning hole through nuts.
The further technical scheme is as follows: the clamp comprises an upper clamping plate and a lower clamping plate, wherein a plurality of teeth are arranged on the inner side of the upper clamping plate, and a plurality of clamping holes are formed in the outer side of the lower clamping plate.
The further technical scheme is as follows: a plurality of adjustable supporting legs are uniformly distributed at the bottom of the detection box, and the detection box is also provided with a horizontal bubble.
The further technical scheme is as follows: a supporting piece is arranged in the detection box, and the apparent density of the supporting piece is 18kg/m2Polystyrene board of (2).
The further technical scheme is as follows: and a height scale is arranged on the inner wall of the rear side baffle.
The further technical scheme is as follows: the bottom plate and the baffle plate are made of acrylic plates and are in sealing connection through special glue for the acrylic plates.
The utility model has the advantages that:
the utility model discloses a carry out the accurate positioning to the detection test piece that moves elastic modulus, can guarantee to move the detection site of elastic modulus experimental well excitation transducer and receiving transducer and the last detection site unanimous, quick accurate detection. The utility model discloses a bottom plate and baffle use the preparation of inferior gram force board, compare in old-fashioned dead lever, the utility model discloses it is lighter and pleasing to the eye more to do not need repeated regulation, save time.
Drawings
FIG. 1 is a schematic diagram showing connection and relative positions of components in a concrete dynamic elastic modulus test;
fig. 2 is a perspective view of the present invention;
FIG. 3 is a front view of the detection box;
FIG. 4 is a front view of a clamping assembly on the test cassette;
FIG. 5 is a top view of the clamping assembly on the test cassette;
FIG. 6 is a side view of a clamping assembly on the test cassette;
FIG. 7 is a schematic front view of the clamping assembly;
fig. 8 is a structural view of an exciting transducer;
fig. 9 is a view showing the positions of the first positioning hole and the second positioning hole formed in the fixing plate.
Reference numerals:
1. the detection test piece comprises a detection test piece body, 2, a detection box, 201, a bottom plate, 202, a front side baffle, 203, a rear side baffle, 204, a left side baffle, 3, a first clamping component, 4, a second clamping component, 5, an exciting transducer, 6, a receiving transducer, 7, a fixing plate, 8, a first positioning hole, 9, a second positioning hole, 10, a screw rod, 11, a clamp, 12, an upper clamping plate, 13, a lower clamping plate, 14, a tooth-shaped part, 15, an adjustable supporting leg, 16, a horizontal bubble, 17, a height scale, 18, a supporting part, 19, a nut, 20 and an opening.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are presented, the directions or positional relationships indicated are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but not for indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as a limitation of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a test positioner of dynamic modulus of elasticity, as shown in fig. 2, is including being used for placing detection test piece 1's detection case 2, can dismantle on the detection case 2 and be connected with two centre gripping subassemblies, be first centre gripping subassembly 3 and second centre gripping subassembly 4 respectively, be connected with exciting transducer 5 and receiving transducer 6 on first centre gripping subassembly 3 and the second centre gripping subassembly 4 respectively.
As shown in fig. 3-9, the detecting box 2 includes a bottom plate 201 and three baffles, the three baffles are respectively disposed on the front side, the rear side and the left side of the bottom plate, and two through holes 20 corresponding to the first clamping assembly 3 and the second clamping assembly 4 are opened on the front baffle 202. The detection test piece 1 is placed on the bottom plate 201 from the opening at the right side of the detection box 2, and the exciting transducer 5 and the receiving transducer 6 are lightly pressed outside the detection test piece 1 through the through hole 20 on the front side baffle 202.
The detection box 2 is vertically connected with a fixing plate 7, the fixing plate 7 is provided with a first positioning hole 8 and a second positioning hole 9, and the first clamping component 3 and the second clamping component 4 are respectively connected to the first positioning hole 8 and the second positioning hole 9. The first positioning hole 8 is arranged in the vertical extending direction of the middle point of the long edge of the bottom of the detection box 2, and the second positioning hole 9 is arranged in the vertical extending direction of the position 5cm away from the end face of the long edge of the bottom of the detection box. The quick positioning of the exciting transducer 5 and the receiving transducer 6 can be realized through the first positioning hole 8 and the second positioning hole 9, the accuracy of each test result is ensured, and the time is saved.
The first clamping assembly and the second clamping assembly comprise a screw rod 10 and a clamp 11, and the screw rod 10 is connected to the bottom of the clamp 11; the screw rod of first centre gripping subassembly 3 is connected on first locating hole 8, and the screw rod of second centre gripping subassembly is connected on second locating hole 9. In the preferred embodiment, the threaded rod 10 is attached to the positioning hole of the fixing plate by a double nut. The screw 10 can be adjusted up and down according to the height required by the test, so that the center of the clamp and the center line of the height of the test piece are positioned on the same straight line, and the final accurate positioning is realized.
As shown in fig. 7, the clamp 11 includes an upper clamping plate 12 and a lower clamping plate 13, a plurality of teeth 14 are disposed on the inner side of the upper clamping plate 12, a plurality of clamping holes are disposed on the outer side of the lower clamping plate, and the teeth 14 of the upper clamping plate 12 can be fixed in the clamping holes, so that the upper and lower clamping plates are movably connected to form a circular structure with a diameter the same as that of the exciting transducer 5 or the receiving transducer 6, and the vibrating heads of the exciting transducer 5 and the receiving transducer 6 are fixed between the upper and lower clamping plates.
A plurality of adjustable supporting legs 15 are uniformly distributed at the bottom of the detection box 2, each adjustable supporting leg 15 comprises an upper sleeve and a lower sleeve, and the height of each adjustable supporting leg is adjusted by rotating threads between the upper sleeve and the lower sleeve. The detection box 2 is also provided with a horizontal bubble 16, and the horizontal bubble 16 is used for judging whether the detection box is kept in a horizontal state, and if the detection box is not in the horizontal state, the detection box can be adjusted by the adjustable foot supporting foot 15.
A supporting piece 18 is arranged in the detection box 2, the supporting piece 18 is arranged on the bottom plate 201, and a detection test piece is placed on the supporting piece 18. In the preferred embodiment, the support member 18 is 20mm thick and has an apparent density of 18kg/m2The polystyrene board has good compression resistance, can protect the bottom plate and the detection test piece, reduces abrasion and bears pressure.
The right edge of the rear side baffle 203 is provided with a height scale 17, and whether the placing position of the test piece 1 is accurate can be judged through the height scale 17. And meanwhile, the method can also be used for judging whether the size of the test piece meets the specification.
In a preferred embodiment, the bottom plate 201 and the three baffles are made of acrylic plates, and are hermetically connected by special glue for the acrylic plates. The acrylic plate has high transparency, the impact resistance is far higher than that of common glass, and the self weight of the acrylic plate is 0.5 times that of the common glass. The acrylic plate can make things convenient for the staff to observe whether the locating position of detecting the test piece is accurate to easy to assemble and accomodate, compressive capacity is strong. Meanwhile, the acrylic plate is a good insulating material, and cannot influence the detection result.
In specific embodiment, the standard size of test piece 1 is 400mm 100mm, the utility model discloses a length of front side shield 202 and rear side shield 203 is 400mm, and is wide 125mm, and it has the diameter to be greater than the through-hole 20 of exciting transducer and receiving transducer diameter to open on front side shield 201, and the length of bottom plate 201 is 400mm, and is wide 105mm, and the length of left side shield 204 is 105mm, highly is 125 mm. A block having an apparent density of 18kg/m is placed on a bottom plate 201 in the detection chamber 22Polystyrene boards of 400mm by 100mm by 20mm in size are used as the support 18.
During detection, the detection test piece 1 is pushed into the box body along the front side baffle 202 until the detection test piece is flush with the left side baffle 204 of the box body, and then whether the height of the test piece is 100mm or not is detected according to the height gauge at the right end of the rear side baffle 203. At the moment, the screw rods of the first clamping assembly 3 and the second clamping assembly 4 are adjusted, so that the center heights of the clamps of the first clamping assembly and the second clamping assembly are 70cm and are on the same straight line with the side center line of the detection test piece 1. After the test piece 1 is placed, coupling media are coated on the two through holes 20 of the front side baffle 202, the exciting transducer 5 and the receiving transducer 6 are fixed in the first clamping component 3 and the second clamping component 4 according to requirements, the measuring bar of the exciting transducer 5 is lightly pressed at 1/2 of the central line of the long side of the side face of the test piece, and the measuring bar of the receiving transducer 6 is lightly pressed at the position 5mm away from the end face of the long side of the side face of the test piece. The rapid detection can be realized, and manual fixed point detection is not needed.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a test positioner of dynamic elasticity modulus which characterized in that, is including being used for placing the detection case that detects the test piece, can dismantle on the detection case and be connected with two centre gripping subassemblies, is first centre gripping subassembly and second centre gripping subassembly respectively, is connected with excitation transducer and receiving transducer on first centre gripping subassembly and the second centre gripping subassembly respectively.
2. The positioning device for the dynamic elastic modulus test according to claim 1, wherein the detection box comprises a bottom plate and three baffles, the three baffles are respectively arranged on the front side, the rear side and the left side of the bottom plate, and two through holes respectively corresponding to the first clamping assembly and the second clamping assembly are formed in the front baffle.
3. The positioning device for the dynamic elastic modulus test according to claim 1 or 2, wherein a fixing plate is vertically connected to the detection box, a first positioning hole and a second positioning hole are formed in the fixing plate, and the first clamping assembly and the second clamping assembly are respectively connected to the first positioning hole and the second positioning hole.
4. The positioning device for the dynamic elastic modulus test according to claim 3, wherein the first positioning hole is arranged in the vertical extending direction of the middle point of the long edge of the bottom of the detection box, and the second positioning hole is arranged in the vertical extending direction of the long edge of the bottom of the detection box at a position 5cm away from the end part.
5. The dynamic elastic modulus test positioning device as claimed in claim 4, wherein the first clamping assembly and the second clamping assembly comprise a screw rod and a clamp, and the screw rod is connected to the bottom of the clamp; the screw rods of the first clamping assembly and the second clamping assembly are respectively connected with the first positioning hole and the second positioning hole through nuts.
6. The dynamic elastic modulus test positioning device as claimed in claim 5, wherein the clamp comprises an upper clamping plate and a lower clamping plate, the inner side of the upper clamping plate is provided with a plurality of teeth, and the outer side of the lower clamping plate is provided with a plurality of clamping holes.
7. The positioning device for the dynamic elastic modulus test according to claim 1, wherein a plurality of adjustable supporting feet are uniformly distributed at the bottom of the detection box, and the detection box is further provided with a horizontal bubble.
8. The positioning device for the dynamic elastic modulus test according to claim 1, wherein a support member is arranged in the detection box, and the apparent density of the support member is 18kg/m2Polystyrene board of (2).
9. The positioning device for the dynamic elastic modulus test as claimed in claim 2, wherein the inner wall of the rear side baffle is provided with a height scale.
10. The positioning device for the dynamic elastic modulus test according to claim 2, wherein the bottom plate and the baffle plate are made of acrylic plates and are hermetically connected through special glue for the acrylic plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123434979.8U CN216847204U (en) | 2021-12-29 | 2021-12-29 | Experimental positioner of dynamic elasticity modulus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123434979.8U CN216847204U (en) | 2021-12-29 | 2021-12-29 | Experimental positioner of dynamic elasticity modulus |
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| Publication Number | Publication Date |
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| CN216847204U true CN216847204U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123434979.8U Active CN216847204U (en) | 2021-12-29 | 2021-12-29 | Experimental positioner of dynamic elasticity modulus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993401A (en) * | 2023-03-23 | 2023-04-21 | 四川省公路规划勘察设计研究院有限公司 | Calibration system for grouting saturation measuring equipment |
-
2021
- 2021-12-29 CN CN202123434979.8U patent/CN216847204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993401A (en) * | 2023-03-23 | 2023-04-21 | 四川省公路规划勘察设计研究院有限公司 | Calibration system for grouting saturation measuring equipment |
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