CN211576069U - Improved generation contact concrete expansion contraction appearance - Google Patents
Improved generation contact concrete expansion contraction appearance Download PDFInfo
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- CN211576069U CN211576069U CN202020459179.8U CN202020459179U CN211576069U CN 211576069 U CN211576069 U CN 211576069U CN 202020459179 U CN202020459179 U CN 202020459179U CN 211576069 U CN211576069 U CN 211576069U
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Abstract
The utility model relates to the technical field of concrete deformation measuring equipment, in particular to an improved contact type concrete expansion and contraction instrument, which comprises a base, wherein two sides of the base are respectively provided with a supporting part and a reference plate, a measurer is arranged on the supporting part, a guide chute is arranged on the reference plate, a positioning plate is arranged between the supporting part and the reference plate, a positioning groove is arranged on the axis center of the positioning plate, the positioning groove, the measurer and the guide chute are arranged in the same vertical plane, when a concrete expansion test is carried out, a worker only needs to clamp and embed the pre-buried measuring heads on two sides of a concrete sample in the positioning groove on the positioning plate, so that the measuring heads on two sides of the concrete sample, the measurer and the guide chute are ensured to be in the same vertical plane, the axis of the concrete sample can not deviate, and the measuring error of the expansion or contraction measurement, the accuracy of the experiment is ensured.
Description
Technical Field
The utility model relates to a concrete deformation measuring equipment technical field, concretely relates to improved generation contact concrete expansion contraction appearance.
Background
The concrete expansion and contraction instrument is a special instrument for measuring the change of length or volume of a concrete test piece in the hardening process under a certain environmental condition, the concrete can expand and contract in the curing period or when the concrete meets the change of natural environment, and the expansion and contraction of the concrete can cause the cracking of a wall body and influence the durability of a concrete structure.
Current concrete expansion contraction appearance, set up backup plate and the amesdial support at base both ends including base and symmetry, when carrying out the concrete expansion test, place the concrete sample between amesdial support and backup plate, make the pre-buried gauge head in concrete sample both sides respectively inconsistent with amesdial and backup plate, later obtain the inflation and the shrink change value that concrete maintenance period or ambient temperature change arouse via the reading of amesdial, the concrete sample is the measurement accuracy of shrink or expansion value only for 0.001mm in the expansion contraction experiment.
The above prior art solutions have the following drawbacks: because it is manual to put the concrete sample on the base for the staff, can't guarantee that the gauge head of concrete sample both sides and amesdial and backup plate are in same vertical plane, this has just caused the gauge head contact point of amesdial and concrete sample both sides to take place the skew, because the measuring accuracy of amesdial is higher, even if the accuracy of experiment also can be influenced to small skew.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an it is not enough to prior art exist, the utility model aims to provide an improved generation contact concrete expansion contraction appearance solves above-mentioned problem.
The utility model provides an improved generation contact concrete expansion contraction appearance, includes the base, the base both sides are equipped with supporting part and benchmark board respectively, install the caliber on the supporting part, be equipped with the direction spout on the benchmark board, be equipped with the locating plate between supporting part and the benchmark board, the constant head tank has been seted up in the axle center of locating plate, constant head tank and caliber, direction spout are in same vertical plane.
Preferably, the positioning groove is a U-shaped groove with an opening at the upper part, the measuring heads are embedded in advance at two sides of the concrete sample to be detected, the measuring heads are embedded in the U-shaped groove, one measuring head is connected with the measurer at one side, and the other measuring head abuts against the guide sliding groove at the other side.
Preferably, the supporting part comprises a supporting plate, a heightening through hole for adjusting the height of the measurer is formed in the supporting plate, a thread groove is formed in one side of the heightening through hole, and a locking part for fixing the measurer is rotatably connected in the thread groove.
Preferably, the base is provided with a slide way, the bottom of the positioning plate is provided with a slide block, and the positioning plate is in sliding clamping connection with the base.
Preferably, the base also houses an alignment mechanism.
Preferably, the calibration mechanism comprises a vertical plate and a standard rod, the vertical plate is arranged between the support plate and the reference plate, the standard rod penetrates through the vertical plate, one side of the standard rod abuts against the measurer, and the other side of the standard rod abuts against the sliding groove in the reference plate.
Preferably, the measurer adopts a dial indicator or a micrometer with the precision of 0.001mm, and the standard rod is made of hard steel or quartz glass.
Compared with the prior art, the utility model discloses the beneficial effect of equipment is:
the utility model is provided with a positioning plate on the base, a positioning groove is arranged on the axis of the positioning plate, and the positioning groove is in the same vertical plane with the measurer on the supporting plate and the guide chute on the reference plate; when carrying out the concrete inflation test, the staff only need with the pre-buried gauge head inlay card of concrete sample both sides in the constant head tank on the locating plate, alright guarantee that the gauge head of concrete sample both sides and caliber, direction spout are in same vertical plane, make concrete sample can not take place the skew, avoided the concrete sample inflation or the shrink range grow that the human factor caused, guaranteed the accuracy of experiment.
Drawings
Fig. 1 is a schematic structural diagram of an improved contact type concrete expansion and contraction instrument in the embodiment.
Fig. 2 is a side view of an improved contact concrete expansion and contraction instrument according to the embodiment.
Fig. 3 is a top view of an improved contact type concrete expansion and contraction instrument according to the present embodiment.
Fig. 4 is a schematic structural diagram of a concrete test sample.
In the drawings: the concrete measuring device comprises a base 1, a slide way 1-1, a support plate 2, a measurer 2-1, a height-adjusting through hole 2-2, a reference plate 3, a guide chute 3-1, a positioning plate 4, a positioning groove 4-1, a vertical plate 5, a standard rod 6, a pre-embedded measuring head a and a post-embedded measuring head b.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. The terms "center," "inner," "left," "right," and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, an improved contact type concrete expansion and contraction instrument includes a base 1, a support portion and a reference plate 3 are respectively disposed on two sides of the base 1, a measurer 2-1 is mounted on the support portion, a guide sliding groove 3-1 is disposed on the reference plate 3, a positioning plate 4 is disposed between the support portion and the reference plate 3, a positioning groove 4-1 is disposed on an axis of the positioning plate 4, the positioning groove 4-1, the measurer 2-1 and the guide sliding groove 3-1 are in the same vertical plane, two positioning plates 4 are disposed, one is mounted on an inner side of the support portion, and the other is mounted on an inner side of the reference plate 3.
When placing the concrete sample, the staff takes up the concrete sample earlier, aims at the constant head tank on two locating plates respectively with the gauge head of its both sides, then slowly puts into the concrete sample along the constant head tank direction, and when the gauge head of concrete sample one side contradicted the direction spout 3-1 on the benchmark board 3, when the gauge head of its opposite side contradicted caliber 2-1, it was accomplished to place the concrete sample.
The positioning groove 4-1 is a U-shaped groove with an opening at the upper part, measuring heads are embedded in advance at two sides of a concrete sample to be detected, the measuring heads are embedded in the U-shaped groove, one measuring head is connected with the measurer 2-1, and the other measuring head is abutted against the guide chute 3-1.
Because the concrete sample to be detected may have different heights each time, the heights of the measuring heads embedded at the two sides of the concrete sample can be changed, so that in the embodiment, the positioning groove 4-1 adopts the U-shaped groove with the upper opening, and when the height of the concrete sample is changed, the measuring heads at the two sides can still be placed in the positioning groove 4-1.
The supporting part comprises a supporting plate 2, an heightening through hole 2-2 used for adjusting the height of the measurer 2-1 is formed in the supporting plate 2, a thread groove is formed in one side of the heightening through hole 2-2, a locking part used for fixing the measurer 2-1 is connected in the thread groove in a rotating mode, and the locking part is a star-shaped handle screw.
Because the height of the concrete sample to be detected may be different every time, the height of the measurer 2-1 needs to be changed, when the height of the concrete sample to be detected is higher, the star-shaped handle screw is rotated, the measurer 2-1 is taken out from the heightening through hole 2-2 and then is placed into the heightening through hole with the same height as the concrete sample to be detected, and then the star-shaped handle screw is screwed tightly, so that the heightening of the measurer 2-1 is completed.
The base 1 is provided with a slide way 1-1, the bottom of the positioning plate 4 is provided with a slide block 4-2, and the positioning plate 4 is connected with the base 1 in a sliding and clamping manner.
The T-shaped sliding block is adopted as the sliding block 4-2, the sliding way matched with the T-shaped sliding block is adopted as the sliding way 1-1, the design structure is stable, the disassembly is convenient, the damaged positioning plate can be conveniently replaced, in addition, the disassembly can be carried out when the T-shaped sliding block is not used, and the use space is saved.
The base 1 is also provided with a calibration mechanism, the calibration mechanism comprises an upright plate 5 and a standard rod 6, the upright plate 5 is arranged between the supporting plate 2 and the reference plate 3, the standard rod 6 penetrates through the upright plate 5, one side of the standard rod abuts against the measurer 2-1, and the other side of the standard rod abuts against the sliding groove 3-1 on the reference plate 3.
Before the expansion and contraction measurement, the zero point of the measurer 2-1 is corrected by using the standard rod 6, and the zero point is rechecked for at least 1-2 times in the measurement process, wherein the zero point is checked once after all test pieces are measured and read. When the deviation of the zero point and the original value is found to exceed 0.001mm during rechecking, resetting and re-measuring;
the concrete standard 6 and the vertical plate 5 are used in detail according to standard of test methods for long-term performance and durability of ordinary concrete (GBT 50082-2009).
The measurer 2-1 is a dial indicator or a micrometer with the precision of 0.001mm, and the standard rod 6 is made of hard steel or quartz glass.
The working principle is as follows:
before testing, elevation is carried out according to the set height of the concrete test piece; when the elevation is high, the height of the vertical plate 5 is the same as that of a concrete test piece, the specific adjustment mode refers to the standard of a test method for long-term performance and durability of common concrete (GBT50082-2009), then the height of the dial indicator 2-1 is adjusted according to the positions of the vertical plate 5 and the standard rod 6, the dial indicator 2-1 is taken out from an original height-adjusting through hole and is placed into the height-adjusting through hole with the height being the same as that of the standard rod 6, the height-adjusting through hole is fixed through a star-shaped handle screw, and after the height adjustment is finished, the vertical plate 5 and the standard rod 6 are taken down;
during testing, a concrete sample to be detected by a worker is placed between the two positioning plates, a measuring head on one side of the concrete sample penetrates through the positioning groove in one positioning plate and abuts against the dial indicator 2-1, and a measuring head on the other side of the concrete sample penetrates through the positioning groove in the other positioning plate and abuts against the guide sliding groove 3-1 in the reference plate 3; the measuring heads on the two sides of the concrete sample can be ensured to be on the same axis with the dial indicator 2-1 and the guide chute 3-1, so that the axis of the concrete sample cannot deviate.
Claims (7)
1. The utility model provides an improved generation contact concrete expansion contraction appearance which characterized in that: the measuring device comprises a base (1), wherein a supporting part and a reference plate (3) are respectively arranged on two sides of the base (1), a measurer (2-1) is installed on the supporting part, a guide sliding groove (3-1) is formed in the reference plate (3), a positioning plate (4) is arranged between the supporting part and the reference plate (3), a positioning groove (4-1) is formed in the axis of the positioning plate (4), and the positioning groove (4-1), the measurer (2-1) and the guide sliding groove (3-1) are in the same vertical plane.
2. The improved contact type concrete expansion and contraction instrument according to claim 1, wherein: the positioning groove (4-1) is a U-shaped groove with an opening at the upper part, measuring heads are embedded in advance at two sides of the concrete sample to be detected, the measuring heads are embedded in the U-shaped groove, one measuring head is connected with the measurer (2-1) at one side, and the other measuring head is abutted against the guide sliding groove (3-1).
3. The improved contact type concrete expansion and contraction instrument according to claim 1, wherein: the supporting part comprises a supporting plate (2), a heightening through hole (2-2) used for adjusting the height of the measurer (2-1) is formed in the supporting plate (2), a thread groove is formed in one side of the heightening through hole (2-2), and a locking part used for fixing the measurer (2-1) is rotationally connected in the thread groove.
4. The improved contact type concrete expansion and contraction instrument according to claim 1, wherein: the base (1) is provided with a slide way (1-1), the bottom of the positioning plate (4) is provided with a slide block (4-2), and the positioning plate (4) is connected with the base (1) in a sliding and clamping manner.
5. The improved contact type concrete expansion and contraction instrument according to claim 3, wherein: the base (1) is also provided with a calibration mechanism.
6. The improved contact type concrete expansion and contraction instrument according to claim 5, wherein: the calibrating mechanism comprises a vertical plate (5) and a standard rod (6), the vertical plate (5) is placed between the supporting plate (2) and the reference plate (3), the standard rod (6) penetrates through the vertical plate (5), one side of the standard rod abuts against the measurer (2-1), and the other side of the standard rod abuts against the sliding groove (3-1) in the reference plate (3).
7. The improved contact type concrete expansion and contraction instrument according to claim 6, wherein: the measurer (2-1) adopts a dial indicator or a micrometer with the precision of 0.001mm, and the standard rod (6) is made of hard steel or quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020459179.8U CN211576069U (en) | 2020-04-01 | 2020-04-01 | Improved generation contact concrete expansion contraction appearance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020459179.8U CN211576069U (en) | 2020-04-01 | 2020-04-01 | Improved generation contact concrete expansion contraction appearance |
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| CN211576069U true CN211576069U (en) | 2020-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235884A (en) * | 2021-12-17 | 2022-03-25 | 中路交科检测技术有限公司 | High-low temperature performance testing device and method for asphalt mixture |
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2020
- 2020-04-01 CN CN202020459179.8U patent/CN211576069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235884A (en) * | 2021-12-17 | 2022-03-25 | 中路交科检测技术有限公司 | High-low temperature performance testing device and method for asphalt mixture |
| CN114235884B (en) * | 2021-12-17 | 2023-10-20 | 中路交科检测技术有限公司 | High-low temperature performance testing device and method for asphalt mixture |
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