CN207336532U - A kind of concrete expansion retractometer - Google Patents
A kind of concrete expansion retractometer Download PDFInfo
- Publication number
- CN207336532U CN207336532U CN201721503810.4U CN201721503810U CN207336532U CN 207336532 U CN207336532 U CN 207336532U CN 201721503810 U CN201721503810 U CN 201721503810U CN 207336532 U CN207336532 U CN 207336532U
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- China
- Prior art keywords
- plate
- fixed
- retractometer
- lifting groove
- right plate
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of concrete expansion retractometer, its drip irrigation device includes left plate and right plate, left plate is connected with right plate by base, lifting groove is equipped with the left plate and right plate, the both sides of the lifting groove are equipped with sliding slot, movable block is slidably connected in the sliding slot, the movable block controls it to be slided up and down in lifting groove by slipping mechanism, fixed thread is connected with screw rod on movable block on the left plate, movable block on right plate is fixed with dial gauge, height of the utility model with dial gauge and screw rod is adjustable, improve the function of the instrument scope of application.
Description
Technical field
A kind of concrete NDT equipment is the utility model is related to, more specifically it is related to a kind of concrete expansion and shrinks
Instrument.
Background technology
Concrete shrinkage dilatometer, is to be used to measure concrete sample under a certain environmental condition, length in hardening process
Or the changed special instrument of volume, concrete can produce expansion and shrinkage phenomenon when running into natural environment and changing,
The expansion and contraction of concrete can all cause the cracking of wall, the index of concrete durability evaluation be influenced, therefore, to concrete
Expansion and the detection of shrinkage are particularly significant, are also required to use concrete shrinkage dilatometer in the detection process of regeneration concrete
Regeneration concrete is detected.
It is a kind of existing concrete shrinkage dilatometer as shown in Figure 1, including left plate 3 and right plate 4,3 He of left plate
Right plate 4 is connected by base 2, and screw rod 13 is threaded with left plate 3, and dial gauge 14 is fixed with right plate 4,
When testing concrete, concrete sample 1 is placed between screw rod 13 and dial gauge 14, and is made by rotating screw bar 13
Obtain screw rod 13 and dial gauge 14 is abutted with concrete sample 1 and precompressed dial gauge 14, then return to zero dial gauge 14, then changes
Environment, the reading of observation dial gauge 14 observes concrete expansion and shrinkage according to this, but the concrete sample 1 that people obtain
Often not of uniform size, the height after being placed on base 2 is also different, and screw rod 13 and dial gauge 14 are apart from the height of base 2
Inconvenience so that occur during the instrument use screw rod 13 and dial gauge 14 can not the phenomenon that abuts of concrete sample 1,
Reduce the use scope of the instrument.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of concrete expansion retractometer,
Height with dial gauge and screw rod is adjustable, improves the function of the instrument scope of application.
To achieve the above object, the utility model provides following technical solution：A kind of concrete expansion retractometer, including
Left plate and right plate, left plate and right plate are connected by base, are equipped with lifting groove on the left plate and right plate, institute
The both sides for stating lifting groove are equipped with sliding slot, movable block are slidably connected in the sliding slot, the movable block controls it by slipping mechanism
Slided up and down in lifting groove, fixed thread is connected with screw rod on the movable block on the left plate, the movement on right plate
Block is fixed with dial gauge.
By using above-mentioned technical proposal, concrete sample is placed on base, according to the height of concrete sample, is led to
Cross the height that slipping mechanism on left plate and right plate changes movable block on left plate and right plate so that the position of screw rod and
The position of dial gauge contact is corresponding with concrete sample, then rotates screw rod so that the contact of screw rod and dial gauge is with mixing
Solidifying soil test specimen abuts and precompressed dial gauge, and then dial gauge returns to zero, then changes environment, observes the reading of dial gauge, so that
Draw the swell value or shrinkage value of coagulation, can be by positioned at a left side after the height change of concrete sample in above-mentioned detection process
Slipping mechanism on side plate and right plate changes the height of screw rod and dial gauge, so as to improve the use of the utility model
Scope.
The utility model is further arranged to：The movable block lower face is equipped with the mounting groove upwardly extended, the installation
The both sides of groove face to lifting groove sidewall are communicated with lifting groove, and the slipping mechanism includes being located in mounting groove and intermeshing
Driving gear and driven gear, the driving gear is rotatablely connected by second shaft at its center with installation groove sidewall, driven
Gear is rotatablely connected by the side wall of the first rotating shaft and lifting groove that are fixed therein the heart, fixed in the lifting groove two side walls
Some racks, the driving gear and driven gear are engaged with the rack on lifting groove different lateral respectively, second shaft
Mounting groove is stretched out close to one end of dial gauge dial plate and is threaded with locking nut.
By using above-mentioned technical proposal, driving gear is rotated so as to drive driven gear to rotate by the second shaft, is made
Obtain driving gear and driven gear is moved up and down along rack, moved down so as to drive on the dial gauge or screw rod on movable block
It is dynamic, so as to fulfill the adjusting to dial gauge or screw rod height, and after the location determination of dial gauge or screw rod, pass through rotation
Tight locking nut can cause driving gear to be not easy to rotate, so that the fixation of the position of dial gauge or screw rod.
The utility model is further arranged to：The side of lifting groove on the left plate and right plate is equipped with graduation mark.
By using above-mentioned technical proposal, the position of dial gauge and screw rod is recorded by recording scale, is surveyed in next time
It when measuring identical concrete sample, can be directly adjusted according to scale, accelerate governing speed.
The utility model is further arranged to：One end that second shaft is located at outside mounting groove is fixed with rotation ear.
By using above-mentioned technical proposal, the second shaft is rotated by rotating ear so that the rotation of the second shaft is more square
Just.
The utility model is further arranged to：The lower end of the right plate is equipped with notch, and the notch both sides are fixed with swallow
The guide rail of tail shape, the guide rail and the dovetail groove of base front and rear sides are slidably connected, and in the front and rear sides screw thread of right plate
It is connected with positioning bolt.
By using above-mentioned technical proposal, when the length of concrete sample is long or too short, slidably right plate so that
The distance of left plate and right side plate changes so that and the distance of left plate and right side plate is agreed with concrete sample, and
And after right plate location determination, by passing through screwed in place bolt so that right plate is closely abutted with dovetail groove, so that
Right side Board position fixation can not be slided, so that the usage range increase of the utility model.
The utility model is further arranged to：The base upper surface sets corrugated boss, and the boss is less than notch
Upper surface and do not contacted with right plate.
By using above-mentioned technical proposal, corrugated boss reduces bottom while concrete sample height is improved
The materials of seat, play the purpose to economize on resources, and corrugated boss can improve anti-pressure ability, prevent that base from being pressed
It is bad, and when right plate slides, boss is not contacted less than the upper surface of notch with right plate, and the slip of right plate will not be subject to
Boss hinders..
The utility model is further arranged to：The one side of the screw rod towards dial gauge is fixed with contact plate, described to connect
The diameter of touch panel is more than the diameter of screw rod.
By using above-mentioned technical proposal, contact plate can improve the contact area of screw rod and concrete sample so that
The height of screw rod need not be adjusted frequently.
The utility model is further arranged to：The one end of the screw rod away from right plate is fixed with rotating disk, the rotation
The outer surface of turntable is fixed with multiple raised lines.
By using above-mentioned technical proposal, raised line can increase rotating disk and the frictional force of people, and people can be revolved by rotating
Turntable rotates screw rod so that screw rod rotates more easy and convenient.
In conclusion the utility model has the following advantages：
By rotating the second shaft on left plate and right side, the adjusting to screw rod and dial gauge height is realized, improve
The utility model scope of application, and when the length of concrete sample changes, can be by way of sliding right plate
Change the distance between right plate and left plate, easy to detect the concrete sample of different length, it is new to further increase this practicality
The type scope of application.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of existing concrete shrinkage dilatometer；
Fig. 2 is the structure diagram of the present embodiment；
Fig. 3 is the exploded perspective view of right plate in the present embodiment；
Fig. 4 is the exploded perspective view of the movable block on right plate in the present embodiment；
Fig. 5 is the schematic diagram that screw rod is connected with rotating disk and contact plate in the present embodiment.
Description of reference numerals：1st, concrete sample；2nd, base；3rd, left plate；4th, right plate；5th, boss；6th, notch；7th, lead
Rail；8th, dovetail groove；9th, positioning bolt；10th, lifting groove；11st, sliding slot；12nd, movable block；13rd, screw rod；14th, dial gauge；15th, pacify
Tankage；16th, driving gear；17th, driven gear；18th, rack；19th, first rotating shaft；20th, the second shaft；21st, ear is rotated；22nd, lock
Tight nut；23rd, rotating disk；24th, raised line；25th, contact plate；26th, graduation mark.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The utility model discloses a kind of concrete expansion retractometer, as shown in Fig. 2, including for placing concrete sample
1 base 2, the left side of base 2 are fixed with left plate 3, and the right side of base 2 is connected with right plate 4, and 2 upper surface of base, which is equipped with, to be used
In the corrugated boss 5 for placing concrete sample 1, corrugated boss 5 subtracts while 1 height of concrete sample is improved
Lack the materials of base 2, play the purpose to economize on resources, and corrugated boss 5 can improve anti-pressure ability, prevent bottom
Seat 2 is subject to crushing.
As shown in Figure 2 and Figure 3, the lower end of right plate 4 is equipped with notch 6, and 6 both sides of notch are fixed with the guide rail 7 of swallow-tail form, lead
Rail 7 and the dovetail groove 8 of 2 front and rear sides of base are slidably connected, and are threaded with positioning bolt in the front and rear sides of right plate 4
9, when right plate 4 slides, boss 5 is less than the upper surface of notch 6 so that boss 5 does not interfere with right plate 4 and slides, when in use
The distance between right plate 4 and left plate 3, right plate 4 can be adjusted according to the running lengthwise right plate 4 of concrete sample 1
Putting can be by screwed in place bolt 9 after fixing so that guide rail 7 is closely abutted with dovetail groove 8, so that 4 position of right plate is consolidated
Surely can not slide, so as to improve the scope of application of concrete expansion retractometer
As shown in Figure 2 and Figure 3, lifting groove 10 is equipped with left plate 3 and right plate 4, the both sides of lifting groove 10, which are equipped with, to be slided
Groove 11, slidably connects movable block 12 in sliding slot 11, screw rod 13 is threaded with the movable block 12 on left plate 3,
Dial gauge 14 is fixed with the movable block 12 on right plate 4, the contact of dial gauge 14 is directed toward right plate 4.
As shown in Figure 3, Figure 4,12 lower face of movable block is equipped with the mounting groove 15 that upwardly extends, and mounting groove 15 is towards lifting groove
The both sides of 10 side walls are communicated with lifting groove 10, and intermeshing driving gear is rotatably connected between the two side walls of mounting groove 15
16 and driven gear 17, the rack 18 being fixed with 10 two side walls of lifting groove, driving gear 16 and driven gear 17 respectively with
Rack 18 on 10 different lateral of lifting groove engages, and when driving gear 16 rotates, driving gear 16 can drive driven gear 17
Rotate, so as to drive movable block 12 to move up and down in lifting groove 10.
As shown in Figure 3, Figure 4, driven gear 17 is by being fixed therein the first rotating shaft 19 of the heart and the side wall of lifting groove 10
Rotation connection, driving gear 16 are rotatablely connected by being fixed therein the second shaft 20 of the heart with 15 side wall of mounting groove, second turn
Axis 20 stretches out mounting groove 15 close to one end of 14 dial plate of dial gauge and is fixed with rotation ear 21, and the second shaft 20 is located at mounting groove 15
Outer partial threads are connected with locking nut 22, driving gear 16 can be rotated by rotating the second shaft 20, so that moving
Motion block 12 moves up and down, and tightens locking nut 22 after 12 location determination of movable block so that driving gear 16 is not easy to rotate, and plays
The effect of fixed movable block 12, and graduation mark 26 is carved with the side of lifting groove 10, can record dial gauge by recording scale
14 and 13 position of screw rod, it when measuring identical concrete sample 1 next time, can be directly adjusted, accelerated according to scale
Governing speed.
As shown in Fig. 2, Fig. 5, the one end of screw rod 13 away from right plate 4 is fixed with rotating disk 23, the appearance of rotating disk 23
Face is fixed with multiple raised lines 24, and raised line 24 can increase the frictional force of rotating disk 23 and people, and people can be by rotating rotating disk 23
Screw rod 13 is more easily rotated, and the one side of screw rod 13 towards right plate 4 is fixed with contact plate 25, contact plate
25 diameter is more than the diameter of screw rod 13, and contact plate 25 can improve the contact area of screw rod 13 and concrete sample 1, make
Obtaining the height of screw rod 13 need not frequently be adjusted.
Specific work process：Concrete sample 1 is placed on waveform boss 5, then rotates left plate 3 and right plate
The second shaft 20 on 4 changes the position of screw rod 13 and dial gauge 14 so that the contact plate 25 and dial gauge of screw rod 13
14 contact is corresponding with concrete sample 1, and by tightening the locking nut 22 in two the second shafts 20 after location determination
To cause screw rod 13 and 14 position of dial gauge to fix, screw rod 13 is then rotated so that contact plate 25 and dial gauge 14 touch
Head is abutted with concrete sample 1 and precompressed dial gauge 14, and then dial gauge 14 returns to zero, and then changes environment, observes dial gauge
14 reading, so as to draw the swell value or shrinkage value of coagulation.
The above is only the preferred embodiment of the present invention, is not intended to limit the present invention, all in this practicality
Within new design concept, any modification, equivalent replacement, improvement and so on, should be included in the protection of the utility model
Within the scope of.
Claims (8)
1. a kind of concrete expansion retractometer, including left plate (3) and right plate (4), left plate (3) and right plate (4) pass through
Base (2) connects, it is characterised in that：Lifting groove (10), the lifting groove are equipped with the left plate (3) and right plate (4)
(10) both sides are equipped with sliding slot (11), slidably connect movable block (12) in the sliding slot (11), the movable block (12) is by sliding
Moving mechanism controls, it is slided up and down in lifting groove (10), and fixed thread connects on the movable block (12) on the left plate (3)
There is a screw rod (13), the movable block (12) on right plate (4) is fixed with dial gauge (14).
A kind of 2. concrete expansion retractometer according to claim 1, it is characterised in that：Movable block (12) lower face
Equipped with the mounting groove (15) upwardly extended, the mounting groove (15) is towards the both sides of lifting groove (10) side wall and lifting groove (10) phase
Logical, the slipping mechanism includes being located in mounting groove (15) and intermeshing driving gear (16) and driven gear (17),
The driving gear (16) is rotatablely connected by second shaft (20) at its center with mounting groove (15) side wall, driven gear (17)
It is rotatablely connected by the side wall of the first rotating shaft (19) and lifting groove (10) that are fixed therein the heart, described (10) two sides of lifting groove
The rack (18) being fixed with wall, the driving gear (16) and driven gear (17) respectively with lifting groove (10) different lateral
Rack (18) engagement, second shaft (20) close to dial gauge (14) dial plate one end stretch out mounting groove (15) and screw thread connect
It is connected to locking nut (22).
A kind of 3. concrete expansion retractometer according to claim 2, it is characterised in that：The left plate (3) and right side
The side of lifting groove (10) on plate (4) is equipped with graduation mark (26).
A kind of 4. concrete expansion retractometer according to claim 2, it is characterised in that：Second shaft (20) is located at
The one end of mounting groove (15) outside is fixed with rotation ear (21).
A kind of 5. concrete expansion retractometer according to claim 2, it is characterised in that：The lower end of the right plate (4)
Equipped with notch (6), notch (6) both sides are fixed with the guide rail (7) of swallow-tail form, the guide rail (7) and base (2) front and rear sides
Dovetail groove (8) be slidably connected, and be threaded with positioning bolt (9) in the front and rear sides of right plate (4).
A kind of 6. concrete expansion retractometer according to claim 5, it is characterised in that：Base (2) upper surface is set
Corrugated boss (5), the boss (5) are less than the upper surface of notch (6) and are not contacted with right plate (4).
A kind of 7. concrete expansion retractometer according to claim 6, it is characterised in that：The screw rod (13) is towards hundred
The one side of table (14) is divided to be fixed with contact plate (25), the diameter of the contact plate (25) is more than the diameter of screw rod (13).
A kind of 8. concrete expansion retractometer according to claim 7, it is characterised in that：The screw rod (13) is away from right
One end of side plate (4) is fixed with rotating disk (23), and the outer surface of the rotating disk (23) is fixed with multiple raised lines (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721503810.4U CN207336532U (en) | 2017-11-11 | 2017-11-11 | A kind of concrete expansion retractometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721503810.4U CN207336532U (en) | 2017-11-11 | 2017-11-11 | A kind of concrete expansion retractometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207336532U true CN207336532U (en) | 2018-05-08 |
Family
ID=62427708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721503810.4U Expired - Fee Related CN207336532U (en) | 2017-11-11 | 2017-11-11 | A kind of concrete expansion retractometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207336532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375628A (en) * | 2019-06-10 | 2019-10-25 | 李健 | A kind of concrete work distortion measurement convergent-divergent instrument |
| CN112051393A (en) * | 2020-09-18 | 2020-12-08 | 王刚强 | Concrete shrinkage tester for simulating construction site |
-
2017
- 2017-11-11 CN CN201721503810.4U patent/CN207336532U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375628A (en) * | 2019-06-10 | 2019-10-25 | 李健 | A kind of concrete work distortion measurement convergent-divergent instrument |
| CN112051393A (en) * | 2020-09-18 | 2020-12-08 | 王刚强 | Concrete shrinkage tester for simulating construction site |
| CN112051393B (en) * | 2020-09-18 | 2022-11-01 | 广东东远建设工程管理有限公司 | Concrete shrinkage tester for simulating construction site |
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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: 20180508 Termination date: 20181111 |