CN218524731U - Concrete shrinkage test device - Google Patents
Concrete shrinkage test device Download PDFInfo
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- CN218524731U CN218524731U CN202222490749.1U CN202222490749U CN218524731U CN 218524731 U CN218524731 U CN 218524731U CN 202222490749 U CN202222490749 U CN 202222490749U CN 218524731 U CN218524731 U CN 218524731U
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Abstract
The utility model relates to a concrete shrinkage test device, include: a base; the base plate is arranged at one end of the base and used for positioning one end of the concrete sample; the dial indicator fixing seat is oppositely provided with a reference plate; the dial indicator body is connected to the dial indicator fixing seat and used for measuring the contraction distance of two ends of the concrete sample; one end of the base is hinged with one end of the base provided with the reference plate, and the hinge axis is horizontal; the supporting component is arranged on the base, the base is in a horizontal state, and the supporting component abuts against the bottom of the base; and the overturning positioning assembly is connected with the base and is used for controlling the inclination angle of the base. The utility model discloses a base pivoted base is wound to one end for lift up base one end after the concrete sample shrink, the concrete sample is hugged closely with the benchmark board under the action of gravity, guarantees to measure accurately, and hand contactless concrete sample prevents effectively that the hand from pressing from both sides the wound simultaneously, and the security is higher.
Description
Technical Field
The utility model relates to a concrete shrinkage check out test set, in particular to concrete shrinkage test device.
Background
The shrinkage deformation is an inherent characteristic of a cement concrete material, and is a main cause of deterioration of the performance of the concrete material. In recent years, cement concrete technology has been developed to achieve low water-cement ratio, high fluidity and high strength, and the problem of cracking and damage of concrete due to excessive shrinkage deformation is more prominent, because the shrinkage deformation of concrete is greatly increased by the reduction of water-cement ratio, the use of high-efficiency water reducing agent, the increase of slurry content and the like. Statistical data indicate that cracking due to early plastic shrinkage deformation and self-shrinkage deformation accounts for the highest proportion. Therefore, it has become an important research work in the engineering research field to realize accurate measurement of early plastic shrinkage deformation and self-shrinkage deformation of concrete.
In order to avoid excessive moving friction after the concrete sample shrinks, the conventional concrete shrinkage test device is generally provided with a support roller on a support platform to reduce the approach of pushing the concrete sample to a reference plate. This kind of mode still needs to consume too much manpower and easily presss from both sides wounded operating personnel's hand, can't guarantee that the concrete sample really laminates the benchmark board when the staff withdraws in addition, leads to measuring not accurate enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a concrete shrinkage test device to prior art not enough.
The utility model provides a technical scheme that its technical problem adopted is: a concrete shrinkage test apparatus comprising: a base; the base plate is arranged at one end of the base and used for positioning one end of a concrete sample; the dial indicator fixing seats are oppositely arranged on the reference plates; the dial indicator body is connected to the dial indicator fixing seat and is used for measuring the contraction distance of two ends of the concrete sample; one end of the base is hinged with one end of the base provided with the reference plate, and the hinge axis is horizontal; the supporting component is arranged on the base, the base is in a horizontal state, and the supporting component abuts against the bottom of the base; and the overturning positioning assembly is connected with the base and is used for controlling the inclination angle of the base.
Through one end around base pivoted base in the above-mentioned design for lift up base one end after the concrete sample shrink, the concrete sample hugs closely with the benchmark board under the action of gravity, guarantees to measure the accuracy, and hand contactless concrete sample prevents effectively that the hand from pressing from both sides the injury simultaneously, and the security is higher.
Preferably, the base is provided with supporting rollers, the axes of the supporting rollers are parallel to the rotation axis of the base, the top surfaces of the supporting rollers are higher than the top surface of the base, and the arrangement direction of the supporting rollers is perpendicular to the axes of the supporting rollers. Effectively reduce the frictional force between concrete sample and the base, and then make the base only need rotate less angle and just can realize the laminating of concrete sample and benchmark board, it is more convenient to operate, and the degree of difficulty is little.
Preferably, the base is connected with one end of the base in a rotating mode and is connected with a turnover plate, the left side and the right side of the turnover plate are respectively provided with a side guide column, the dial indicator fixing seat is in sliding fit with the side guide columns, the side guide columns are in a horizontal state, and the front side of the turnover plate abuts against the reference plate. The side guide post is on a parallel with the concrete measurement length when guaranteeing to measure, measures more accurately, only needs to overturn the returning face plate when concrete sample from top to bottom, lifts up the amesdial fixing base, has avoided the dismouting of amesdial body.
Preferably, an upper guide post parallel to the side guide posts is arranged on the turnover plate above the two side guide posts, and the dial indicator fixing seat is in sliding fit with the upper guide post. The stability of amesdial fixing base is convenient to promote.
Preferably, the dial indicator fixing seat is provided with a dial indicator guide pillar parallel to the side guide pillar, the dial indicator guide pillar is provided with a dial indicator clamp sliding along the dial indicator guide pillar, the dial indicator clamp is locked on the dial indicator guide pillar, the dial indicator fixing seat is provided with a sliding seat sliding along the axis of the side guide pillar, the detection head of the dial indicator body abuts against one end, deviating from the concrete sample, of the sliding seat, and the movement direction of the detection head of the dial indicator body is collinear with the sliding direction of the sliding seat. The amesdial guide pillar is convenient for finely tune the amesdial, and then realizes the calibration of amesdial, the reading of being convenient for during the measurement.
Preferably, the supporting component comprises a vertically arranged cylinder barrel, a piston sliding up and down along the inner wall of the cylinder barrel, and a contact plate arranged on the top of the piston and extending out of the top of the cylinder barrel, wherein a vent hole penetrating through the wall of the cylinder barrel is arranged at the bottom of the cylinder barrel, a return spring is sleeved outside the cylinder barrel, the bottom of the return spring abuts against the bottom of the cylinder barrel, and the top of the return spring abuts against the contact plate, namely the return spring applies upward elastic force to the contact plate. Utilize the piston to guarantee the base and descend slowly when the base descends, prevent that the base from suddenly descending and leading to each parts striking damage.
Preferably, the turnover positioning component comprises an electric cylinder connected with the base and a connecting seat arranged on an electric cylinder rod of the electric cylinder, an upper connecting rod is connected between the base and the connecting seat, two ends of the upper connecting rod are respectively connected with the base and the connecting seat in a rotating manner, a lower connecting rod is connected between the base and the connecting seat, and two ends of the lower connecting rod are respectively connected with the base and the connecting seat in a rotating manner. Through the electric cylinder, can effectively use manpower sparingly, be applicable to the great concrete sample of weight, the base inclination of being convenient for simultaneously is controlled, and the base plate is hugged closely to the concrete sample of being convenient for.
Preferably, upset locating component including set up in locating rack on the base, hang in lifting hook on the locating rack, the base do not with the base rotates and connects one end and is equipped with the handle, be in the state of lifting up, the lifting hook catches on the handle. Simple structure, the operation is quick, is applicable to the less concrete sample of weight.
The utility model has the advantages that: the utility model discloses a base pivoted base is wound to one end for lift up base one end after the concrete sample shrink, the concrete sample is hugged closely with the benchmark board under the action of gravity, guarantees to measure accurately, and hand contactless concrete sample prevents effectively that the hand from pressing from both sides the wound simultaneously, and the security is higher.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic cross-sectional structure diagram of a first embodiment of the present invention.
Fig. 2 is a schematic view of the working state of the first embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of a second embodiment of the present invention.
Fig. 4 is a schematic view of the working state of the second embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of the whole support assembly of the present invention.
In the figure, 1, a base, 2, a dial indicator clamp, 3, a dial indicator fixing seat, 4, a connecting seat, 5, a sliding seat, 6, a handle, 7, a dial indicator guide post, 8, a supporting roller, 9, a lower connecting rod, 10, an upper connecting rod, 11, an upper guide post, 12, a side guide post, 13, a reference plate, 14, a base, 15, an electric cylinder, 16, a supporting assembly, 17, a dial indicator body, 18, a piston, 19, a cylinder barrel, 20, a contact plate, 21, a positioning frame, 22, a lifting hook, 23, a turnover plate, 24, a reset spring and 25 vent holes are formed.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and the description are only for the purpose of explanation, but not for the purpose of limitation.
Example 1: a concrete shrinkage test apparatus comprising: a base 14; a reference plate 13 provided at one end of the base 14, for positioning one end of the concrete sample; the dial indicator fixing seat 3 is oppositely provided with the reference plate 13; the dial indicator body 17 is connected to the dial indicator fixing seat 3 and used for measuring the contraction distance of two ends of the concrete sample; one end of the base 1 is hinged with one end of the base 14, which is provided with a reference plate 13, and the hinge axis is horizontal; the supporting component 16 is arranged on the base 1, the base 14 is in a horizontal state, and the supporting component 16 abuts against the bottom of the base 14; and the overturning positioning component is connected with the base 14 and the base 1 and is used for controlling the inclination angle of the base 14.
Through one end around base 1 pivoted base 14 in the above-mentioned design for lift 14 one end of base after the concrete sample shrink, concrete sample hugs closely with datum plate 13 under the action of gravity, guarantees to measure the accuracy, and hand contactless concrete sample prevents effectively that the hand from pressing from both sides the wound simultaneously, and the security is higher.
The supporting rollers 8 are distributed on the base 14, the axes of the supporting rollers 8 are parallel to the rotating axis of the base 14, the top surfaces of the supporting rollers 8 are higher than the top surface of the base 14, and the arrangement direction of the supporting rollers 8 is perpendicular to the axes of the supporting rollers 8. Effectively reduce the frictional force between concrete sample and the base 14, and then make the base 14 only need rotate less angle and just can realize the laminating of concrete sample and benchmark board 13, it is more convenient to operate, and the degree of difficulty is little.
The base 1 is connected with one end of the base 14 and is rotatably connected with a turnover plate 23, the left side and the right side of the turnover plate 23 are respectively provided with a side guide post 12, the dial indicator fixing seat 3 is in sliding fit with the side guide posts 12, the side guide posts 12 are in a horizontal state, and the front side of the turnover plate 23 abuts against the reference plate 13. The side guide post 12 is on a parallel with concrete measurement length when guaranteeing to measure, measures more accurately, only needs to overturn the returning face plate 23 when concrete sample from top to bottom, lifts amesdial fixing base 3, has avoided the dismouting of amesdial body 17. The dial indicator fixing seat 3 is provided with a bolt in threaded fit, and the head of the bolt tightly abuts against the side guide pillar 12 to lock the dial indicator fixing seat 3.
An upper guide post 11 parallel to the side guide posts 12 is arranged on the turnover plate 23 above the two side guide posts 12, and the dial indicator fixing seat 3 is in sliding fit with the upper guide post 11. The stability of amesdial fixing base 3 is convenient to promote.
The dial indicator fixing seat 3 is provided with a dial indicator guide post 7 parallel to the side guide post 12, the dial indicator guide post 7 is provided with a dial indicator clamp 2 sliding along the dial indicator guide post 7, the dial indicator clamp 2 is locked on the dial indicator guide post 7 through tightly jacking the dial indicator guide post 7 through a bolt in threaded fit with the dial indicator clamp 2, the dial indicator fixing seat 3 is provided with a sliding seat 5 sliding along the axis of the side guide post 12, a detection head of the dial indicator body 17 supports one end, deviating from a concrete sample, of the sliding seat 5, and the movement direction of the detection head of the dial indicator body 17 is collinear with the sliding direction of the sliding seat 5. The dial indicator guide post 7 is convenient for finely adjust the dial indicator body 17, so that the calibration of the dial indicator is realized, and the reading is convenient during the measurement.
The supporting assembly 16 comprises a vertically arranged cylinder barrel 19, a piston 18 sliding up and down along the inner wall of the cylinder barrel 19, and a contact plate 20 arranged at the top of the piston 18 and extending out of the top of the cylinder barrel 19, the contact plate 20 is arranged at the top of the cylinder barrel 19, a vent hole 25 penetrating through the wall of the cylinder barrel 19 is formed in the bottom of the cylinder barrel 19, a return spring 24 is sleeved outside the cylinder barrel 19, the bottom of the return spring 24 abuts against the bottom of the cylinder barrel 19, the top of the return spring 24 abuts against the contact plate 20, and the return spring 24 applies upward elastic force to the contact plate 20. The piston 18 is used for ensuring that the base 14 descends slowly when the base 14 descends, and preventing the base 14 from suddenly descending to cause collision damage of various parts.
The overturning positioning assembly comprises an electric cylinder 15 connected with the base 1 and a connecting seat 4 arranged on an electric cylinder 15 rod of the electric cylinder 15, an upper connecting rod 10 is connected between the base 14 and the connecting seat 4, two ends of the upper connecting rod 10 are respectively rotatably connected with the base 14 and the connecting seat 4, a lower connecting rod 9 is connected between the base 1 and the connecting seat 4, and two ends of the lower connecting rod 9 are respectively rotatably connected with the base 14 and the connecting seat 4. Through electric jar 15, can effectively use manpower sparingly, be applicable to the great concrete sample of weight, the 14 inclination of the control base of being convenient for simultaneously, the concrete sample of being convenient for hugs closely base 1 board.
Example 2: the overturning positioning assembly comprises a positioning frame 21 arranged on the base 1 and a lifting hook 22 hung on the positioning frame 21, a handle 6 is arranged at one end of the base 14, which is not rotatably connected with the base 1, and the lifting hook 22 hooks the handle 6 in a lifting state. Simple structure, the operation is quick, is applicable to the less concrete sample of weight.
During detection, the base 14 is placed flat, the side guide columns 12 are turned up, then a concrete sample is placed on the base 14, one end of the concrete sample abuts against the reference plate 13, one end, away from the dial indicator body 17, of the sliding seat 5 abuts against one end, away from the reference plate 13, of the concrete sample, the dial indicator fixing seat 3 is adjusted to a proper position, and the numerical value of the dial indicator body 17 is read; when waiting concrete sample to place detection time, through the lifting of upset locating component with 14 one end of base, 14 slopes of base, the concrete sample slides to datum plate 13 direction under the action of gravity until supporting datum plate 13, and sliding seat 5 moves down along with the concrete sample, and sliding seat 5 and concrete sample are totally static and the measuring stick of amesdial body 17 supports sliding seat 5, read out amesdial body 17 reading.
The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.
Claims (8)
1. A concrete shrinkage test apparatus comprising:
a base;
the base plate is arranged at one end of the base and used for positioning one end of the concrete sample;
the dial indicator fixing seat is arranged opposite to the reference plate;
the dial indicator body is connected to the dial indicator fixing seat and used for measuring the contraction distance of two ends of the concrete sample;
it is characterized by also comprising:
one end of the base is hinged with one end of the base provided with the reference plate, and the hinge axis is horizontal;
the supporting component is arranged on the base, the base is in a horizontal state, and the supporting component abuts against the bottom of the base;
and the overturning positioning assembly is connected with the base and is used for controlling the inclination angle of the base.
2. The concrete shrinkage test device of claim 1, wherein support rollers are distributed on the base, the axes of the support rollers are parallel to the rotation axis of the base, the top surfaces of the support rollers are higher than the top surface of the base, and the arrangement direction of the support rollers is perpendicular to the axes of the support rollers.
3. The concrete shrinkage test device of claim 1, wherein the base is connected with one end of the base in a rotating manner to form a turnover plate, the turnover plate is provided with a side guide pillar on each of the left side and the right side, the dial indicator fixing seat is in sliding fit with the side guide pillar, the side guide pillar is in a horizontal state, and the front side of the turnover plate abuts against the reference plate.
4. The concrete shrinkage test device of claim 3, wherein an upper guide post parallel to the side guide posts is arranged on the turnover plate above the space between the two side guide posts, and the dial indicator fixing seat is in sliding fit with the upper guide post.
5. The concrete shrinkage test device according to claim 4, wherein the dial indicator fixing seat is provided with a dial indicator guide pillar parallel to the side guide pillar, the dial indicator guide pillar is provided with a dial indicator clamp sliding along the dial indicator guide pillar, the dial indicator clamp is locked on the dial indicator guide pillar, the dial indicator fixing seat is provided with a sliding seat sliding along the axis of the side guide pillar, a detection head of the dial indicator body supports against one end, deviating from a concrete sample, of the sliding seat, and the movement direction of the detection head of the dial indicator body is collinear with the sliding direction of the sliding seat.
6. The concrete shrinkage test device of claim 4, wherein the supporting component comprises a vertically arranged cylinder barrel, a piston sliding up and down along the inner wall of the cylinder barrel, and a contact plate arranged on the top of the piston and extending out of the top of the cylinder barrel, the contact plate being arranged on the top of the cylinder barrel, the bottom of the cylinder barrel being provided with a vent hole penetrating through the wall of the cylinder barrel, the cylinder barrel being externally sleeved with a return spring, the bottom of the return spring abutting against the bottom of the cylinder barrel, and the top of the return spring abutting against the contact plate, namely the return spring applying upward elastic force to the contact plate.
7. The concrete shrinkage test device of any one of claims 1-6, wherein the turning positioning assembly comprises an electric cylinder connected with the base, and a connecting seat arranged on an electric cylinder rod of the electric cylinder, an upper connecting rod is connected between the base and the connecting seat, two ends of the upper connecting rod are respectively rotatably connected with the base and the connecting seat, a lower connecting rod is connected between the base and the connecting seat, and two ends of the lower connecting rod are respectively rotatably connected with the base and the connecting seat.
8. The concrete shrinkage test device of any one of claims 1 to 6, wherein the overturning positioning assembly comprises a positioning frame arranged on the base and a hook hung on the positioning frame, a handle is arranged at one end of the base, which is not rotatably connected with the base, and the handle is hooked by the hook in the lifted state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222490749.1U CN218524731U (en) | 2022-09-21 | 2022-09-21 | Concrete shrinkage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222490749.1U CN218524731U (en) | 2022-09-21 | 2022-09-21 | Concrete shrinkage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218524731U true CN218524731U (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222490749.1U Active CN218524731U (en) | 2022-09-21 | 2022-09-21 | Concrete shrinkage test device |
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| Country | Link |
|---|---|
| CN (1) | CN218524731U (en) |
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- 2022-09-21 CN CN202222490749.1U patent/CN218524731U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A concrete shrinkage testing device Effective date of registration: 20230626 Granted publication date: 20230224 Pledgee: Jiangsu Taicang Rural Commercial Bank Co.,Ltd. Yuewang Branch Pledgor: Taicang Shenkun Concrete Co.,Ltd. Registration number: Y2023980045352 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |