CN206696138U - Continuous type concrete injection resistance meter - Google Patents
Continuous type concrete injection resistance meter Download PDFInfo
- Publication number
- CN206696138U CN206696138U CN201720273285.5U CN201720273285U CN206696138U CN 206696138 U CN206696138 U CN 206696138U CN 201720273285 U CN201720273285 U CN 201720273285U CN 206696138 U CN206696138 U CN 206696138U
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- CN
- China
- Prior art keywords
- workbench
- push rod
- resistance meter
- drive link
- concrete injection
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- 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.)
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Abstract
The utility model discloses a kind of continuous type concrete injection resistance meter, its drip irrigation device is to include base and support, the workbench for placing die trial is rotatably connected on the base, linkage is provided between the workbench and the support, the linkage includes the depression bar for being hinged and driving test device to test with support, the drive link for being connected with depression bar end and vertically moving, it is connected with drive link end and the push rod of horizontal rectilinear motion, the fixed ratchet rotated on the table and by the transform linear motion of push rod for workbench, annular spread has at least three stations on the workbench, the test trails of the test device are located on the circumference of station formation.The utility model solves the problems, such as to need to carry die trial back and forth during existing concrete injection resistance meter test.
Description
Technical field
Construction material performance detection apparatus is the utility model is related to, in particular, it is related to a kind of continuous type concrete injection
Resistance dynamometer.
Background technology
Concrete injection resistance meter be determine concrete coagulating time a kind of instrument, suitable for various cement, additive and
The setting time measurement of the concrete mix of different concrete proportionings.Existing concrete injection resistance meter includes test device, surveys
Trial assembly is put including penetration needle, makes penetration needle vertical downward movement by compression testing device by handle, when penetration needle injection sample mould
In concrete rubber cement in when, rubber cement produces resistance to penetration needle, and this power shown by display device.Increase over time,
The penetration resistance of concrete rubber cement accordingly increases, and is measured by different measuring points and pours into resistance accordingly, obtains the setting time of concrete
Data.
When being tested using concrete injection resistance meter, concrete mix representative sample need to be taken, sifts out mortar, then through manually turning over
After mixing, load a die trial.Every batch of concrete mix takes a sample, takes three samples altogether, dispenses three die trials.Tested
1-2 point is respectively surveyed in three die trials every time in journey, takes penetration resistance value of its arithmetic mean of instantaneous value as the time.Each sample passes through
Entering resistance test should be between 0.2-28Mpa, and not less than six times, the unit area penetration resistance of last time should be not less than
28Mpa.The base of concrete injection resistance meter can only put a die trial and be tested at present, remove die trial after having tested and put again
Another die trial is tested, and so circulation terminates until testing so that the amount of labour that die trial is carried in test is big.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of continuous type concrete injection
Instrument, can the successional concrete in three die trials test, reduce carry die trial labor intensity.
To achieve the above object, the utility model provides following technical scheme：A kind of continuous type concrete injection resistance meter, bag
Base, support, rack-mount test device are included, the workbench for placing die trial is rotatably connected on the base,
Linkage is provided between the workbench and the support, the linkage includes being hinged with support and driving test device
The depression bar of test, the drive link for being connected with depression bar end and vertically moving, it is connected with drive link end and horizontal linear
The push rod of motion, the fixed ratchet rotated on the table and by the transform linear motion of push rod for workbench, the workbench
Upper annular spread has at least three stations, and the test trails of the test device are located on the circumference of station formation.
By using above-mentioned technical proposal, the die trial for filling concrete is placed on the workbench of base, it is downward with hand
Moulded rod driving test device carries out concrete penetration resistance test, after a concrete penetration resistance is completed, lifting upwards
Depression bar causes the other end of depression bar to move downward, and depression bar drives drive link to move along a straight line downwards, and drive link promotes push rod to spine
Wheel moves along a straight line, and the end of push rod promotes pawl wheel, and ratchet straps are moved workbench and rotated so that under placing on the table
One die trial is turned to below test device, and downward moulded rod continues to test, and now the other end of depression bar moves upwards, pressure
Bar drives drive link to move along a straight line upwards, and drive link pulls push rod away from ratcheting motion and to be returned to original state.Three examinations
Mould can be individually positioned on station, and position is accurate, can be entered successively by test device by three die trials of rotary work-table
Row test, easily laborsaving, repeating above step can hinder the continuous concrete injection of concrete progress in the die trial on workbench
Power is tested.
The utility model is further arranged to：The support includes the vertical tube perpendicular to base setting, is fixed in vertical tube
The support arm in portion, be provided with elongate holes at the top of the vertical tube, the drive link is located in the vertical tube, the middle part of the depression bar and
The support arm is hinged, and the other end of the depression bar passes through the elongate holes and stretched into the vertical tube and cut with scissors with the drive link
Connect.
By using above-mentioned technical proposal, drive link is located inside vertical tube, reduces space-consuming so that whole device structure
It is compact attractive in appearance, support arm and depression bar composition lever construction so that the other end drives drive link to rise when depression bar one end is depressed, depression bar
The other end drives drive link to decline when one end is lifted.
The utility model is further arranged to：The drive link is connected with the push rod by intermediate bar, the intermediate bar
Both ends be hinged respectively with the drive link and the push rod.
By using above-mentioned technical proposal, the power of drive link is delivered to push rod by intermediate bar, and drive link is moved downward and turned
Turn to and drive push rod to ratcheting motion, it is simple in construction by the upward conversion of motion of drive link to drive push rod away from ratchet and to reset,
Install easy to make.
The utility model is further arranged to：The base is provided with the guide groove coordinated with the push rod.
By using above-mentioned technical proposal, push rod is slid along guide groove, and the direction of motion is fixed, and will not be shifted, be made
Obtain push rod and smoothly promote pawl wheel.
The utility model is further arranged to：The end of the push rod is provided with projection, and the projection includes vertical and tilted
Two faces, the ratchet is provided with oblique groove, and the oblique groove includes vertical and inclined two faces, the projection
Inclined-plane is parallel with the inclined-plane of the oblique groove.
By using above-mentioned technical proposal, when push rod is to ratcheting motion, the vertical plane of boss and oblique groove it is vertical
Face is bonded so that push rod easily promotes pawl wheel, and when push rod is away from ratcheting motion, the inclined-plane of projection is along oblique groove
Inclined-plane slide and move in next oblique groove, so that push rod is again to can continue to press on pawl wheel during ratcheting motion.
The utility model is further arranged to：The base, which is provided with, to be used to the projection pressing to the oblique groove
Elastic component.
By using above-mentioned technical proposal, elastic member presses push rod causes projection to be located in oblique groove not deviate from, so as to
Push rod can promote pawl wheel.
The utility model is further arranged to：The elastic component is shell fragment.
By using above-mentioned technical proposal, the structure of shell fragment is simple, low manufacture cost.
In summary, the utility model has the advantages that compared to prior art：1. can be continuously to three
Concrete in die trial is tested, and without continually carrying replacing die trial, reduces the amount of labour；2. whenever same die trial is transported again
When moving test position, die trial meeting rotation certain angle, test is avoided in same point, the raising experiment degree of accuracy；3. due to saving
Handling time so that the test interval of three die trials is short, and can more be tested, and improves conventional efficient.
Brief description of the drawings
Fig. 1 is the working state schematic representation of embodiment；
Fig. 2 is the exploded perspective view of display embodiment center base internal structure；
Fig. 3 is the structural representation of linkage and station in display embodiment；
Fig. 4 is the partial sectional view of the internal structure of test device in display embodiment；
Fig. 5 is the structural representation of rotating mechanism in display embodiment；
Fig. 6 is the position relationship top view of linkage and rotating mechanism in display embodiment.
In figure：1st, base；11st, upper lid；111st, holding tank；112nd, annular groove；113rd, guide groove；12nd, workbench；121st, work
Position groove；122nd, counterbore；13rd, bottom；14th, bearing one；2nd, support；21st, vertical tube；211st, elongate holes one；22nd, support arm；221、
Strip hole hole two；222nd, screwed hole；3rd, display；4th, test device；41st, jacking block；411st, baffle ring；412nd, groove；42nd, sleeve pipe；
421st, spring；43rd, handwheel；44th, fiber tube；45th, stock；46th, penetration needle；5th, linkage；51st, depression bar；511st, handle；52nd, pass
Lever；521st, otic placode；53rd, intermediate bar；54th, push rod；541st, projection；542nd, elastic component；55th, ratchet；551st, cylinder；552nd, tiltedly
To groove；554th, axostylus axostyle；6th, rotating device；61st, gear one；611st, the gear teeth；63rd, gear two；631st, rotating shaft；63rd, pallet；631、
Bearing two；7th, die trial.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment：
A kind of continuous type concrete injection resistance meter, as depicted in figs. 1 and 2, including meausring apparatus, it is successively set on meausring apparatus
On test device 4, linkage 5, be placed with meausring apparatus three splendid attire concrete die trials 7, pass through test device 4
Apply pressure to the concrete in die trial 7, meausring apparatus weighs pressure value, recycles linkage 5 to cause next die trial 7
The lower section of test device 4 is rotated to, is measured again with test device 4, the concrete in die trial 7 is carried out continuously so as to realize
Property test.
With reference to figure 1 and Fig. 2, meausring apparatus includes horizontal positioned base 1 on the ground, the pressure on base 1
Sensor, the support 2 set perpendicular to the edge of base 1, the display 3 on support 2.Base 1 is fabricated to for stainless steel
Rectangular parallelepiped structure, base 1 include upper lid 11, the workbench 12 among upper lid 11, the bottom being bolted with upper lid 11
Lid 13, the middle part of upper lid 11 are provided with the holding tank 111 of cylinder, and annular groove 112 is provided with along week close to holding tank 111.Work
Platform 12 is located in holding tank 111, and workbench 12 is the stainless steel plate being adapted with holding tank 111, has higher intensity, so as to
Carrying certain weight will not deform, and improve service life.Workbench 12 is rotatablely connected with base 11 by bearing 1,
The shape of bearing 1 and annular groove 112, which is adapted, causes bearing 1 to be placed in annular groove 112.It is uniform on table 12
Three station grooves 121 are provided with, three station grooves 121 are set centered on the axis of workbench 12 in equilateral triangle, work nest
121 diameter is slightly larger than the outline diameter with die trial 7, so that die trial 7 can be smoothly put into work nest 121.
Support 2 includes being vertically set on the vertical tube 21 at the edge of base 1, is arranged the support arm 22 for being fixed on the middle part of vertical tube 21.
Vertical tube 21 is made using aluminium-alloy pipe or other materials such as stainless steel tube, and there is good intensity to be made with playing enough supports
With will not deform.Vertical tube 21 is connected through a screw thread fixed or is welded and fixed with base 1, inside the inside of vertical tube 21 and base 1
Cavity connects.Elongate holes 1 are provided with vertical tube 21 above support arm 22.Support arm 22 is T-shaped, the top of support arm 22
End is provided with elongate holes 2 221, and one end away from vertical tube 21 is provided with screwed hole 222.Pressure sensor（It is not drawn into figure）Using
Hai Bohua HCHL-205 type torsion circle weighing sensors, display 3 are threadedly connected to the top of vertical tube 21, and display 3 is using credit China
XK3190-A27E electronic platform scale display screens, display 3 passes through with pressure sensor to be electrically connected so that pressure sensor measures
Pressure in time display on the display 3, be easy to read count.
With reference to figure 3 and Fig. 4, fiber tube 44 that test device 4 includes being arranged on screwed hole 222, fix with the top of fiber tube 44
The handwheel 43 of connection, the sleeve pipe 42 for being arranged at the top of fiber tube 44, the jacking block 41 for being sheathed in sleeve pipe 42 and sliding connection, it is arranged in
The inside of fiber tube 44 and be threadedly coupled with jacking block 41 stock 45, be fixed on the penetration needle 46 of the end of stock 45.Fiber tube 44 and screw thread
Hole 222 screw thread coordinates, and adjusting fiber tube 44 to rotate handwheel 43 is located at support arm two-part length about 22.Sleeve pipe 42 and silk
Pipe 44 is connected through a screw thread, and is removed and installed with facilitating.Jacking block 41 is that stainless steel is fabricated to cylinder, has higher wearability,
One end of jacking block 41 is provided with groove 412, is provided with baffle ring 411 along week close to the position of groove 412 so that jacking block 41 slides into sleeve pipe 42
Interior maximum length is 25mm.The diameter of stock 45 is less than or equal to the internal diameter of fiber tube 44 and can slid along fiber tube about 44, with
Just the downward motion of jacking block 41 is delivered to penetration needle 46 so that penetration needle 46 is penetrated in concrete.One end of stock 45 with
The clamping of jacking block 41 and the other end are threadedly coupled with penetration needle 46, so as to each part quick release and installation.In sleeve pipe 42
Spring 421 is arranged with the one section long bar 45 in portion, one end of spring 421 is connected with jacking block 41, and the other end and the top of fiber tube 44 are solid
Fixed connection so that jacking block 41 resets after losing external force in the case where spring 421 must act on.
With reference to figure 1 and Fig. 5, linkage 5 include be arranged in support arm 22 strip hole 2 221 set depression bar 51, with
Depression bar 51 is be hinged and the drive link 52, intermediate bar 53 be hinged with the other end of drive link 52, another with intermediate bar 53 that is vertically arranged
The be hinged push rod 54 in one end, the ratchet 55 being connected with the end of push rod 54, depression bar 51, drive link 52, intermediate bar 53 and push rod 54 are
Aluminium alloy rod, have certain Strength Mass lighter, to reduce the weight of whole equipment.With reference to Fig. 4 and Fig. 5, the one of depression bar 51
End is provided with handle 511, and depression bar 51 is lifted with the downward moulded rod 51 of hand or upwards with person who happens to be on hand for an errand.Depression bar 51 is with jacking block 41 in groove
It is hinged at 412 so that depression bar 51 links together with test device 4.The middle part of depression bar 51 is with support arm 22 positioned at strip
It is hinged at hole 2 221, so that support arm 22 plays point action to depression bar 51, when holding handle 511 and lifting depression bar 51 upwards,
The other end of depression bar 51 drives drive link 52 to move downward, when downward moulded rod 51 make it that jacking block 41 moves down, depression bar 51
The other end drive drive link 52 move upwards.
With reference to Fig. 2 and Fig. 5, the end of drive link 52 is provided with a pair of parallel otic placode 521, and one end of intermediate bar 53 is located at two
It is between block otic placode 521 and be hinged with otic placode 521 so that intermediate bar 53 can rotate between otic placode 521.It is provided with upper lid 11
Guide groove 113, guide groove 113 is identical with the width of push rod 54 so that push rod 54 slides along guide groove 113, the depth of guide groove 113
Degree more than push rod 54 thickness so that push rod 54 within the specific limits in guide groove 113 with horizontal plane certain angle.Push away
The other end of bar 54 is provided with boss 541, and boss 541 includes vertical plane and inclined-plane.The top of ratchet 55 is cylinder 551 and bottom
Annular is provided with some oblique grooves 552, and oblique groove 552 includes vertical plane and inclined-plane, and boss 541 is located in one of oblique recessed
In groove 552.Elastic component 542 is provided with close to the position of ratchet 55 in the bottom of push rod 54, elastic component 542 is shell fragment, so as to by boss 541
The oblique groove 552 being pressed on ratchet 55 cannot come off.The bottom centre of ratchet 55 and workbench 12 is fixed by axostylus axostyle 553 to be connected
Connect.Test device 4 is driven to be tested when depression bar 51 pushes, now the other end of depression bar 51 drives drive link 52 to move upwards,
The intermediate bar 53 being connected with drive link 52 drives push rod 54 to be pulled outwardly so that the inclined-plane of boss 541 and oblique groove 552
Inclined-plane slides and moved in next oblique groove 552 of ratchet 55；Lifting depression bar 51 upwards after the completion of test, then depression bar 51
The other end moves downward and drives drive link 52 to move downward so that intermediate bar 53 promotes push rod 54 along guide groove 13 to ratchet
55 movements, the vertical plane of boss 541 is bonded with the vertical plane of ratchet 55 promotes ratchet 55 to rotate, due to ratchet 55 and workbench 12
It is fixedly connected, ratchet 55 drives workbench 12 to rotate.
Referring to figs. 2 and 5 being provided with rotating device 6 between ratchet 55 and workbench 12, rotating device 6 includes being sheathed on
Gear 1 on the cylinder 551 of ratchet 55, positioned at the lower section of station groove 121 and with the meshed gears 2 62 of gear 1, tooth
Take turns 1 to be rotatablely connected with ratchet 55, in order to keep good rotating property, applied in the contact surface of gear 1 and ratchet 55
There is lubricating oil, the top surface of gear 1 is fixedly connected with station groove 121.The diameter of gear 1 is more than the diameter of gear 2 62,
Some gear teeth 611 only are distributed with a segment distance along week in gear 1, and remaining is smooth section.With reference to Fig. 2 and Fig. 6, station
The center of groove 121 is provided with counterbore 122, and the pallet 63 of circular plate type is provided with work nest 121, and pallet 63 passes through axle with station groove 121
2 631 rotation connections are held, bearing 2 631 is located in counterbore 122.Gear 2 62 is fixedly connected by rotating shaft 621 with pallet 63, is made
Obtaining when gear 2 62 rotates drives pallet 63 to rotate.When workbench 12 rotates, gear 2 62 thereon is driven around gear 1
Rotate so that 621 rotation around the shaft of pallet 63 being fixedly connected with gear 2 62, because gear 1 is partially with the gear teeth 611,
Same gear 2 62 is engaged once with gear 1 when then workbench 12 rotates one week so that workbench 12 is held in the palm when rotating one week
The rotation certain angle of disk 63.
The application method of the continuous type concrete injection resistance meter is as follows：
It will be respectively charged into three identical die trials 7 with batch of concrete mix sample, then distinguish die trial 7
It is put on the pallet 61 in three station grooves 121 of workbench 12, pins die trial 7 and drive workbench 12 to rotate so that wherein one
Individual die trial 7 is located at the lower section of test device 4.Handwheel 43 is rotated, the bottom and the inner concrete surface of die trial 7 for adjusting fiber tube 44 are pasted
Close, grasp 511 times moulded rods of handle 51, depression bar 51 jacking block 41 is pushed so that jacking block 41 slid onto along sleeve pipe 42 can not
When mobile, now penetration needle 46 just penetrates 25mm in concrete, and pressure is measured and on the display 3 by pressure sensor
It has been shown that, writes down the now maximum of display 3 and time.Pressure is removed, jacking block 41 resets under the effect of spring 421；Carry upwards
Strut and tie 51, the other end of depression bar 51 move downward and drive drive link 52 to move downward so that intermediate bar 53 promotes push rod 54
Being moved along guide groove 13 to ratchet 55, boss 541 promotes ratchet 55 to rotate, because ratchet 55 is fixedly connected with workbench 12,
Ratchet 55 drive workbench 12 rotate so that the die trial 7 on workbench 12 turns an angle, downwards again moulded rod 51 when,
The other end of depression bar 51 drives drive link 52 to move upwards, and the intermediate bar 53 being connected with drive link 52 drives push rod 54 outside
Draw so that boss 541 is moved in next oblique groove 552 of ratchet 55, repeats above step until next station groove 121
Die trial 7 turns to the underface of test device 4, then can proceed with test.When three die trials 7 are completed i.e. 12 turns of workbench
After dynamic one week, gear 2 62 moves one week around gear 1, and gear 2 62 turns an angle, and is fixedly connected with gear 2 62
Pallet 63 turns an angle, and pallet 63 drives the rotation certain angle of die trial 7 thereon.Instantly moulded rod 51 continues to test
When, penetration needle 46 penetrates is more than 20mm in another position of the inner concrete of die trial 7, the adjacent point air line distance tested twice,
The possibility twice in same position injection test is avoided the occurrence of, improves the accuracy rate of experiment.Above step is repeated until whole
Individual test is completed, and draws pressure and the graph of relation of time, initial set can be drawn according to expected pre-hardening pressure and final set pressure
Time and final setting time.Whole test process need not carry die trial 7 back and forth, reduce labor intensity, and three sustainabilities of die trial 7 are entered
Row test, measurement point can be more so that the pressure-time curve figure of drafting is more accurate, improve presetting period of concrete with
The degree of accuracy of final setting time.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of continuous type concrete injection resistance meter, including base (1), support (2), the test device on support (2)
(4), it is characterised in that：It is rotatably connected on the base (1) for placing die trial（7）Workbench (12), the workbench
(12) linkage (5) is provided between the support (2), the linkage (5) includes be hinged with support (2) and drives survey
The depression bar (51), the drive link (52) for being connected with depression bar (51) end and vertically moving and transmission of (4) test are put in trial assembly
Bar (52) end connects and the push rod (54) of horizontal rectilinear motion, is fixed on workbench (12) and transports the straight line of push rod (54)
Turn turns to the ratchet (55) of workbench (12) rotation, and annular spread has at least three stations on the workbench (12), described
The test trails of test device (4) are located on the circumference of station formation.
2. continuous type concrete injection resistance meter according to claim 1, it is characterised in that：The support (2) include perpendicular to
The vertical tube (21) of base (1) setting, the support arm (22) being fixed in the middle part of vertical tube (21), vertical tube (21) top are provided with strip
Shape hole one (211), the drive link (52) are located in the vertical tube (21), middle part and the support arm of the depression bar (51)
(22) it is hinged, the other end of the depression bar (51) is through the elongate holes one (211) and stretches into the vertical tube (21) and institute
It is be hinged to state drive link (52).
3. continuous type concrete injection resistance meter according to claim 1, it is characterised in that：The drive link (52) pushes away with described
Bar (54) is connected by intermediate bar (53), the both ends of the intermediate bar (53) respectively with the drive link (52) and the push rod
(54) it is hinged.
4. continuous type concrete injection resistance meter according to claim 1, it is characterised in that：The base (1) is provided with and institute
State the guide groove (113) of push rod (54) cooperation.
5. continuous type concrete injection resistance meter according to claim 4, it is characterised in that：The end of the push rod (54) is provided with
Projection (541), the projection (541) include vertical and inclined two faces, and the ratchet (55) is provided with oblique groove
(552), the oblique groove (552) includes vertical and inclined two faces, the inclined-plane of the projection (541) with it is described oblique recessed
The inclined-plane of groove (552) is parallel.
6. continuous type concrete injection resistance meter according to claim 5, it is characterised in that：The push rod (54), which is provided with, to be used for
The projection (541) is pressed to the elastic component (542) of the oblique groove (552).
7. continuous type concrete injection resistance meter according to claim 6, it is characterised in that：The elastic component (542) is shell fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273285.5U CN206696138U (en) | 2017-03-20 | 2017-03-20 | Continuous type concrete injection resistance meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273285.5U CN206696138U (en) | 2017-03-20 | 2017-03-20 | Continuous type concrete injection resistance meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206696138U true CN206696138U (en) | 2017-12-01 |
Family
ID=60443641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720273285.5U Expired - Fee Related CN206696138U (en) | 2017-03-20 | 2017-03-20 | Continuous type concrete injection resistance meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206696138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865179A (en) * | 2019-12-18 | 2020-03-06 | 阜阳市路兴公路工程监理有限公司 | Concrete penetration resistance appearance |
| CN112964601A (en) * | 2021-02-06 | 2021-06-15 | 青岛建一混凝土有限公司 | Concrete penetration resistance instrument |
-
2017
- 2017-03-20 CN CN201720273285.5U patent/CN206696138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865179A (en) * | 2019-12-18 | 2020-03-06 | 阜阳市路兴公路工程监理有限公司 | Concrete penetration resistance appearance |
| CN112964601A (en) * | 2021-02-06 | 2021-06-15 | 青岛建一混凝土有限公司 | Concrete penetration resistance instrument |
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| 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: 20171201 Termination date: 20190320 |