CN212748923U - Concrete shrinkage detection device - Google Patents
Concrete shrinkage detection device Download PDFInfo
- Publication number
- CN212748923U CN212748923U CN202021360718.9U CN202021360718U CN212748923U CN 212748923 U CN212748923 U CN 212748923U CN 202021360718 U CN202021360718 U CN 202021360718U CN 212748923 U CN212748923 U CN 212748923U
- Authority
- CN
- China
- Prior art keywords
- plate
- dial indicator
- bottom plate
- roller bearing
- mounting frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a concrete shrinkage detection device. Comprises a bottom plate, wherein two groups of symmetrically arranged roller bearing structures are fixedly connected on the bottom plate; the bottom plate is connected with a collision plate structure and a dial indicator detection structure, and the collision plate structure and the dial indicator detection structure are positioned between the two groups of roller bearing structures; a test block limiting structure is arranged on the outer side of the outer side surface of the roller bearing structure; the touch plate structure comprises a first mounting vertical plate connected with the bottom plate, a first distance adjusting screw rod transversely arranged is screwed on the first mounting vertical plate, and the inner end part of the first distance adjusting screw rod is connected with a touch plate; the dial indicator detection structure comprises a measurement mounting frame connected with a bottom plate, a dial indicator seat is arranged above the measurement mounting frame, a dial indicator is connected to the dial indicator seat, and a lifting driving assembly used for driving the longitudinal position of the dial indicator seat is connected to the measurement mounting frame. The utility model discloses the commonality is strong and detect the precision height.
Description
Technical Field
The utility model belongs to the technical field of the concrete detection equipment, especially, relate to concrete shrinkage detection device in concrete detection equipment technical field.
Background
Concrete is one of the most important civil engineering materials of the present generation. The artificial stone is prepared by a cementing material, granular aggregate (also called aggregate), water, an additive and an admixture which are added if necessary according to a certain proportion, and is formed by uniformly stirring, closely compacting, curing and hardening, and plays an irreplaceable role in the building fields of building engineering, highway engineering, bridges, tunnels, water conservancy and the like. During the setting and hardening process of the gelled material slurry, shrinkage deformation can be caused by plastic settlement shrinkage, autogenous shrinkage, chemical shrinkage, drying shrinkage and temperature change, so that the concrete is deformed to a certain extent. The contraction of the concrete can cause the damage of component cracking, pretightening force loss and the like. Therefore, the concrete shrinkage is controlled by adding an expanding agent to the concrete to compensate for the shrinkage of the concrete.
The existing concrete shrinkage detection process mainly comprises the steps of placing a concrete sample between a touch plate and a dial indicator, adjusting the position of the touch plate, enabling the two sides of the concrete sample to be respectively abutted against the touch plate and the dial indicator, enabling the concrete sample to be pre-pressed with the dial indicator to record data, and then observing the expansion and shrinkage changes of the concrete by changing the environment and reading the dial indicator.
However, the concrete samples are different in size, the height and the size of the concrete samples are different, the dial indicator is fixed in position, and once the concrete sample placed between the abutting plate and the dial indicator does not contact the dial indicator, the abutting plate and the dial indicator cannot abut against the concrete sample, so that the concrete sample cannot be detected; in addition, during the contraction and expansion of the concrete sample, the concrete sample can be deformed only by overcoming the sliding friction force between the bottom of the concrete sample and the supporting surface, and the accuracy of detecting the contraction rate of the concrete is poor due to the fact that the sliding friction force which needs to be overcome by the concrete is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem that exists among the well-known technology and provide a commonality strong and detect the concrete shrinkage detection device that the precision is high.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a concrete shrinkage detection device comprises a bottom plate, wherein two groups of symmetrically arranged roller bearing structures are fixedly connected to the bottom plate; the bottom plate is connected with a collision plate structure and a dial indicator detection structure, and the collision plate structure and the dial indicator detection structure are positioned between the two groups of roller bearing structures; a test block limiting structure is arranged on the outer side of the outer side surface of the roller bearing structure; the touch plate structure comprises a first mounting vertical plate connected with the bottom plate, a first distance adjusting screw rod transversely arranged is screwed on the first mounting vertical plate, and the inner end part of the first distance adjusting screw rod is connected with a touch plate; the dial indicator detection structure comprises a measurement mounting frame connected with a bottom plate, a dial indicator seat is arranged above the measurement mounting frame, a dial indicator is connected to the dial indicator seat, and a lifting driving assembly used for driving the longitudinal position of the dial indicator seat is connected to the measurement mounting frame.
The utility model has the advantages that: the utility model provides a concrete shrinkage detection device, which supports concrete samples by arranging two sets of roller bearing structures, so that a dial indicator is suitable for the concrete samples with different widths, and the universality of the detection device is improved; the bottom surface of the concrete sample is in rolling connection with the roller bearing structure, and compared with sliding connection, the rolling connection mode greatly reduces the friction force between the bottom surface of the concrete sample and the supporting surface, and improves the detection precision; the contact plate and the dial gauge seat are arranged to be abutted against two ends of the concrete sample, so that the deformation of the concrete test can be measured; the vertical position of the dial indicator can be adjusted by arranging the lifting screw, so that the dial indicator is suitable for concrete samples with different heights, and the universality of the detection device is improved.
Preferably: the roller bearing structure comprises a roller bearing mounting frame, and a plurality of groups of bearing rollers arranged side by side are rotatably connected to the top surface of the roller bearing mounting frame through roller seats.
Preferably: the lifting driving assembly comprises a guide piece connected on the measuring installation frame, and a guide installation plate is connected on the guide piece in a sliding manner; the guide piece is fixedly connected with a screw nut, the screw nut is screwed with a lifting screw rod which is longitudinally arranged, and the top of the lifting screw rod is movably connected with the dial indicator seat.
Preferably: the test block limiting structure comprises a second mounting vertical plate fixedly connected with the bottom plate, the second mounting vertical plate is located on the outer side of the outer side face of the roller bearing mounting frame, a second distance adjusting screw rod transversely arranged is screwed on the second mounting vertical plate, and a limiting plate is connected to the inner end portion of the second distance adjusting screw rod.
Preferably: the first distance adjusting screw rod is rotatably connected with the abutting plate.
Preferably: the second distance adjusting screw is rotatably connected with the limiting plate.
Preferably: set up the bar hole that is located between two sets of roller bearing structures on the bottom plate, measure the mounting bracket and be connected with the bottom plate through wearing to locate downthehole screw of bar and lock nut.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic perspective view of a partial structure of the dial indicator detection structure of the present invention.
In the figure: 1. a base plate; 2. a first mounting vertical plate; 3. a first distance adjusting screw; 4. a touch plate; 5. a limiting plate; 6. a second mounting vertical plate; 7. a second distance adjusting screw; 8. a carrying roller; 9. the roller bearing mounting frame; 10. a dial indicator base; 11. a dial indicator; 12. a guide member; 13. a lifting screw; 14. a guide mounting plate; 15. and measuring the mounting frame.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:
referring to fig. 1, the concrete shrinkage detection device of the present invention includes a bottom plate 1, two sets of symmetrical roller bearing structures are fixed on the bottom plate 1, each roller bearing structure includes a roller bearing mounting frame 9, and a plurality of sets of parallel bearing rollers 8 are rotatably connected to the top surface of the roller bearing mounting frame 9 through roller seats. In the actual detection process, the test block to be detected is arranged on the bearing rollers 8 of the two sets of roller bearing structures.
When carrying out the testing, set up the concrete sample on roller bearing structure, the concrete sample is the rolling connection contact with bearing roller 8, for the sliding connection contact with the holding surface, the rolling connection contact has reduced the frictional force of concrete sample with the contact surface greatly, has improved the accuracy of test result.
As shown in fig. 1, a bottom plate 1 is connected with a collision plate structure and a dial indicator detection structure. The conflict plate structure includes the first installation riser 2 that is connected with bottom plate 1, and the spiral shell is closed on first installation riser 2 and is had the first roll adjustment screw rod 3 of horizontal setting, and the tip is connected with the conflict board 4 in first roll adjustment screw rod 3's interior, and first roll adjustment screw rod 3 rotates with conflict board 4 to be connected.
Further referring to fig. 2, the dial indicator detecting structure includes a measuring mounting frame 15 connected to the bottom plate 1, a dial indicator base 10 is disposed above the measuring mounting frame 15, a dial indicator 11 is connected to the dial indicator base 10, and a lifting driving assembly for driving the longitudinal position of the dial indicator base 10 is connected to the measuring mounting frame 15. The lifting driving assembly comprises a guide piece 12 connected on a measuring installation frame 15, and a guide installation plate 14 is connected on the guide piece 12 in a sliding way; a nut is fixedly connected to the guide 12, a lifting screw 13 which is longitudinally arranged is screwed on the nut, and the top of the lifting screw 13 is movably connected with the dial indicator base 10. Set up the bar hole that is located between two sets of roller bearing structures on bottom plate 1, measure mounting bracket 15 and be connected with bottom plate 1 through wearing to locate downthehole screw of bar and lock nut, make the lateral position of percentage table 11 adjustable through the aforesaid setting.
As shown in fig. 1, the collision plate structure and the dial indicator detection structure are positioned between the two sets of roller bearing structures; and a test block limiting structure is arranged on the outer side of the outer side surface of the roller bearing structure. The test block limiting structure comprises a second mounting vertical plate 6 fixedly connected with the bottom plate 1, the second mounting vertical plate 6 is located on the outer side of the outer side face of the roller bearing mounting frame 9, a second distance adjusting screw 7 transversely arranged is screwed on the second mounting vertical plate 6, a limiting plate 5 is connected to the inner end of the second distance adjusting screw 7, and the second distance adjusting screw 7 is rotatably connected with the limiting plate 5.
The working principle is as follows:
the concrete samples are supported by the two sets of roller supporting structures, so that the dial indicator 11 is suitable for concrete samples with different widths, and the universality of the detection device is improved; the bottom surface of the concrete sample is in rolling connection with the bearing roller 8, and compared with sliding connection, the rolling connection mode greatly reduces the friction force between the bottom surface of the concrete sample and the supporting surface, and improves the detection precision; the contact plate 4 and the dial gauge seat 11 are arranged to be abutted against two ends of the concrete sample, so that the deformation of the concrete test can be measured; the longitudinal position of the dial indicator 11 can be adjusted by arranging the lifting screw 13, so that the dial indicator 11 is suitable for concrete samples with different heights, and the universality of the detection device is improved; can carry out spacingly to the concrete sample through setting up test block limit structure.
Claims (7)
1. A concrete shrinkage detection device is characterized in that: comprises a bottom plate (1), wherein two groups of symmetrically arranged roller bearing structures are fixedly connected to the bottom plate (1); the bottom plate (1) is connected with a collision plate structure and a dial indicator detection structure, and the collision plate structure and the dial indicator detection structure are positioned between the two sets of roller bearing structures; a test block limiting structure is arranged on the outer side of the outer side surface of the roller bearing structure;
the touch plate structure comprises a first mounting vertical plate (2) connected with the bottom plate (1), a first distance adjusting screw (3) transversely arranged is screwed on the first mounting vertical plate (2), and the inner end part of the first distance adjusting screw (3) is connected with a touch plate (4);
the dial indicator detection structure comprises a measurement mounting frame (15) connected with a bottom plate (1), a dial indicator seat (10) is arranged above the measurement mounting frame (15), a dial indicator (11) is connected onto the dial indicator seat (10), and a lifting driving assembly used for driving the longitudinal position of the dial indicator seat (10) is connected onto the measurement mounting frame (15).
2. The concrete shrinkage measuring apparatus according to claim 1, wherein: the roller bearing structure comprises a roller bearing mounting frame (9), and a plurality of groups of bearing rollers (8) arranged side by side are rotatably connected to the top surface of the roller bearing mounting frame (9) through roller seats.
3. The concrete shrinkage measuring apparatus according to claim 1, wherein: the lifting driving assembly comprises a guide piece (12) connected on the measuring installation frame (15), and a guide installation plate (14) is connected on the guide piece (12) in a sliding way; a nut is fixedly connected to the guide piece (12), a lifting screw (13) which is longitudinally arranged is screwed on the nut, and the top of the lifting screw (13) is movably connected with the dial indicator seat (10).
4. The concrete shrinkage measuring apparatus according to claim 2, wherein: the test block limiting structure comprises a second mounting vertical plate (6) fixedly connected with the bottom plate (1), the second mounting vertical plate (6) is located on the outer side of the outer side face of the roller bearing mounting frame (9), a second distance adjusting screw (7) transversely arranged is screwed on the second mounting vertical plate (6), and a limiting plate (5) is connected to the inner end of the second distance adjusting screw (7).
5. The concrete shrinkage measuring apparatus according to claim 1, wherein: the first distance adjusting screw rod (3) is rotatably connected with the contact plate (4).
6. The concrete shrinkage measuring apparatus according to claim 4, wherein: the second distance adjusting screw (7) is rotatably connected with the limiting plate (5).
7. The concrete shrinkage measuring apparatus according to claim 1, wherein: a strip-shaped hole between the two groups of roller bearing structures is formed in the bottom plate (1), and the measuring mounting frame (15) is connected with the bottom plate (1) through a screw and a locking nut which penetrate through the strip-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360718.9U CN212748923U (en) | 2020-07-13 | 2020-07-13 | Concrete shrinkage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360718.9U CN212748923U (en) | 2020-07-13 | 2020-07-13 | Concrete shrinkage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212748923U true CN212748923U (en) | 2021-03-19 |
Family
ID=75021934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021360718.9U Expired - Fee Related CN212748923U (en) | 2020-07-13 | 2020-07-13 | Concrete shrinkage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212748923U (en) |
-
2020
- 2020-07-13 CN CN202021360718.9U patent/CN212748923U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201764956U (en) | Positioning device for measuring concrete expansion and contraction deformation by using noncontact method | |
| CN113281190B (en) | Hydraulic asphalt concrete direct tensile test device and application method thereof | |
| CN204101504U (en) | Concrete free expansion shrinkage proving installation | |
| CN205581106U (en) | A device for testing self -compaction microdilatancy steel pipe concrete expansion rate | |
| CN110715866A (en) | Asphalt concrete structure geotextile interlayer shear modulus testing device and testing method | |
| CN113155001A (en) | Flatness measuring device for building engineering construction | |
| CN106225654A (en) | A kind of concrete surface roughness measuring device and measuring method thereof | |
| CN212748923U (en) | Concrete shrinkage detection device | |
| CN205981017U (en) | Reinforcing bar length -measuring appliance | |
| US5305646A (en) | Gauge for compressible medium | |
| CN212693568U (en) | Steel slag and asphalt mixture expansibility detection equipment | |
| CN111323298A (en) | Detection method of soil-based resilience modulus | |
| CN106969693B (en) | Expansion rate measuring device for test block of expansion filling body | |
| CN212255331U (en) | Concrete shrinkage ratio measuring device for hydraulic engineering quality detection | |
| CN214893059U (en) | Building concrete surface flatness detection device | |
| CN113390784B (en) | Method for detecting shrinkage performance of slag soil fluidization backfill material | |
| CN215219158U (en) | Equipment for detecting railway construction clearance | |
| CN214334638U (en) | Experimental pressure device of bituminous paving coefficient of friction | |
| CN211318447U (en) | Mortar constructability testing arrangement | |
| CN213456950U (en) | Mold for measuring shrinkage performance of asphalt mixture or inorganic binder | |
| CN110230749B (en) | Method for installing and adjusting rail seat of high-precision roll grinder | |
| CN209841574U (en) | Direct shearing device | |
| CN207703862U (en) | A kind of Mortar shrinkage test stand | |
| CN107132125B (en) | Slope road surface load tester | |
| CN210664316U (en) | Sliding type tester for surface flatness of masonry stone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210319 |