CN111830246A - Automatic detection equipment of concrete slump - Google Patents
Automatic detection equipment of concrete slump Download PDFInfo
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- CN111830246A CN111830246A CN202010887871.5A CN202010887871A CN111830246A CN 111830246 A CN111830246 A CN 111830246A CN 202010887871 A CN202010887871 A CN 202010887871A CN 111830246 A CN111830246 A CN 111830246A
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 10
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Hydrology & Water Resources (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses automatic concrete slump detection equipment which comprises a first support, a second support, a lifting sleeve, a measuring pipe, a sampling pump and a water pump, wherein a transmission lead screw is vertically arranged on the first support, two ends of the transmission lead screw are respectively and rotatably connected with the first support, a stepping motor is fixedly arranged at the lower end of the first support, an output shaft of the stepping motor is in transmission connection with the transmission lead screw, an internal thread sleeve is further sleeved on the transmission lead screw, and the internal thread sleeve is in mutual thread transmission connection with the transmission lead screw. The automatic detection equipment for the concrete slump, disclosed by the invention, has the advantages of reasonable structure, convenience in use, high precision and the like, and effectively solves the problem of large error of manually measured concrete slump.
Description
Technical Field
The invention relates to the field of auxiliary equipment of mixers, in particular to automatic detection equipment for concrete slump.
Background
The slump of concrete mainly refers to the plasticizing performance and the pumpability of concrete, and factors influencing the slump of concrete mainly include grading change, water content, weighing deviation of a weighing apparatus, the dosage of additives, cement temperature and the like which are easy to neglect. In the known technology, a concrete mixer only has a mixing function, and concrete products obtained by mixing still need manual measurement if the slump of the concrete products needs to be known, so that time and labor are wasted, errors are large, and the production efficiency is reduced, so that the automatic detection equipment for the concrete slump needs to be invented.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the problems existing in the prior art, the automatic detection equipment for the concrete slump is provided, has the advantages of reasonable structure, convenience in use, high precision and the like, and effectively solves the problem of large error of the manual measurement of the concrete slump.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic detection device for concrete slump comprises a first support, a second support, a lifting sleeve, a measuring pipe, a sampling pump and a water pump, wherein a transmission screw rod is vertically arranged on the first support, and two ends of the transmission screw rod are respectively and rotatably connected with the first support; the lower end of the first support is fixedly provided with a stepping motor, and an output shaft of the stepping motor is in transmission connection with a transmission lead screw; the transmission screw rod is also sleeved with an internal thread sleeve, and the internal thread sleeve is in threaded transmission connection with the transmission screw rod;
a guide sliding rod is vertically arranged on the second support, and two ends of the guide sliding rod are fixedly connected with the second support respectively; the guide sliding rod is also sleeved with a guide sleeve, and the guide sleeve is connected with the guide sliding rod in a sliding manner;
the lifting sleeve is vertically arranged and is fixedly connected with the internal thread sleeve and the guide sleeve respectively; a plurality of spray heads are uniformly arranged at the edge of an opening at the upper end of the lifting sleeve; a flat plate is arranged at an opening at the lower end of the lifting sleeve, one end of the flat plate is hinged with the lifting sleeve, and the other end of the flat plate is connected with the lifting sleeve through an electric cylinder;
the measuring tube is vertically sleeved in the inner cavity of the lifting sleeve and is provided with a conical hollow inner cavity, and one end of the measuring tube with the larger inner cavity diameter faces downwards; the lower end of the side wall of the measuring tube is uniformly provided with a convex block around the measuring tube, the lower end face of the convex block is flush with the lower end face of the measuring tube, and the convex block is provided with a mounting groove with a downward opening;
a sealing plate is arranged on an opening of the mounting groove, a pressure sensor is fixed at the bottom of the mounting groove, a spring is fixed at the detection end of the pressure sensor, a probe is fixed on the spring, and the free end of the probe penetrates out of the sealing plate;
the upper end opening of the measuring tube is fixedly provided with a connecting sleeve, the connecting sleeve is fixedly provided with a concrete feeding tube, a water delivery tube and an ultrasonic ranging module, wherein the concrete feeding tube is connected with a sampling pump fixedly arranged on a first support, the water delivery tube is connected with a water pump fixedly arranged on a second support, and the water delivery tube is connected with a spray head; the measuring tube is also provided with a vibrating device for compacting concrete.
Furthermore, two ends of the transmission screw rod are respectively connected with the first support in a rotating mode through thrust bearings.
Further, the number of the bumps is not less than three.
Furthermore, the vibrating device comprises a mounting seat, a motor and a balancing weight, wherein the mounting seat is fixed on the side wall of the measuring pipe, the motor is installed on the mounting seat, and the balancing weight is eccentrically fixed on an output shaft of the motor.
Furthermore, the connecting sleeve is provided with an exhaust hole.
The invention has the beneficial effects that: the automatic detection equipment for the concrete slump is characterized in that concrete to be detected is pumped into a measuring pipe from a stirrer through a sampling pump for measurement, so that time and labor are saved; the collapse distance of the concrete is measured through the ultrasonic ranging module, so that the precision is higher; the concrete is compacted through the vibration device, air bubbles in the concrete are removed, and the precision is further improved; after the measurement is finished, the flat plate is opened, the water pump is started, and the measuring device can be automatically flushed so as to carry out the next measurement, so that the detection efficiency is high; the device has the advantages of reasonable structure, convenience in use, high precision and the like, and effectively solves the problem of large error of manually measured concrete slump.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the overall structure of an automatic detection device for concrete slump according to the present invention;
FIG. 2 is a schematic view of a measuring tube structure of the automatic detection equipment for concrete slump of the present invention;
FIG. 3 is a schematic view of the structure inside the installation groove of the automatic detection equipment for concrete slump of the present invention.
The scores in the figures are as follows:
1. the device comprises a first support, 11, a stepping motor, 12, a transmission screw rod, 13, an internal thread sleeve, 2, a second support, 21, a guide sliding rod, 22, a guide sleeve, 3, a lifting sleeve, 31, a flat plate, 32, an electric cylinder, 33, a spray head, 4, a measuring pipe, 41, a bump, 411, a mounting groove, 42, a vibrating device, 421, a mounting seat, 422, a motor, 423, a balancing weight, 43, a water pipe, 44, an ultrasonic distance measuring module, 45, a connecting sleeve, 451, an exhaust hole, 46, a concrete feeding pipe, 5, a sampling pump, 6, a water pump, 7, a pressure sensor, 8, a spring, 9, a sealing plate, 10 and a probe.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The automatic concrete slump detection equipment comprises a first support 1, a second support 2, a lifting sleeve 3, a measuring pipe 4, a sampling pump 5 and a water pump 6, wherein the first support 1 and the second support 2 are respectively connected with a mixer.
As shown in fig. 1, a transmission screw 12 is vertically arranged on the first bracket 1, and two ends of the transmission screw 12 are respectively rotatably connected with the first bracket 1; the lower end of the first bracket 1 is fixedly provided with a stepping motor 11, and an output shaft of the stepping motor 11 is in transmission connection with a transmission screw 12; the transmission screw 12 is also sleeved with an internal thread sleeve 13, and the internal thread sleeve 13 is in threaded transmission connection with the transmission screw 12; the stepping motor 11 drives the transmission screw 12 to rotate, and the transmission screw 12 drives the internal thread sleeve 13 to move up and down. Through the precise control of the stepping motor, the number of rotation turns of the transmission screw 12 is controlled, and the distance of the up-and-down movement of the internal thread sleeve 13 is precisely controlled.
As shown in fig. 1, a guide sliding rod 21 is vertically arranged on the second bracket 2, and two ends of the guide sliding rod 21 are respectively fixedly connected with the second bracket 2; the guide sliding rod 21 is further sleeved with a guide sleeve 22, and the guide sleeve 22 and the guide sliding rod 21 are connected in a sliding mode.
As shown in fig. 1, the lifting sleeve 3 is vertically arranged, and the lifting sleeve 3 is respectively and fixedly connected with the internal thread sleeve 13 and the guide sleeve 22, that is, the lifting sleeve 3 can be driven by the internal thread sleeve 13 to move up and down, and the guide sleeve 22 plays a role in guiding, assisting in supporting and positioning when the lifting sleeve 3 moves up and down.
A plurality of spray heads 33 are uniformly arranged at the edge of an opening at the upper end of the lifting sleeve 3 and are connected with a water pump to generate high-pressure jet flow to wash the inner cavity wall of the lifting sleeve 3; the lower extreme opening of lift sleeve 3 is equipped with dull and stereotyped 31, dull and stereotyped 31 one end is articulated with lift sleeve 3, dull and stereotyped 31 other end is connected with lift sleeve 3 through electronic jar 32, as shown in fig. 1, dull and stereotyped 31 left end is articulated with lift sleeve 3, dull and stereotyped 31 right-hand member is connected with lift sleeve 3 through electronic jar 32, can open or close dull and stereotyped 31 through electronic jar 32's lift, dull and stereotyped 31 slope when opening dull and stereotyped 31, the waste material that the test was accomplished is followed dull and stereotyped 31 roll-off, when dull and stereotyped 31 is closed, dull and stereotyped 31 is in the horizontality, dull and stereotyped 31 and survey 4 bottom but.
The slump test method is that a horn-shaped slump bucket with an upper opening of 100mm in diameter, a lower opening of 200mm in diameter and a height of 300mm is used for pouring concrete, then the bucket is pulled up, the concrete generates a slump phenomenon due to self weight, the height of the highest point of the slump concrete is subtracted from the height (300mm) of the bucket, and the slump is called slump, and if the difference is 10mm, the slump is 10.
As shown in fig. 1, the measuring tube 4 is vertically sleeved in the inner cavity of the lifting sleeve 3.
As shown in fig. 2, the measuring tube 4 has a conical hollow cavity, or a horn-shaped hollow cavity, wherein the end of the measuring tube 4 with a larger inner cavity diameter is disposed downward, and for the convenience of measurement and data reading, the inner cavity of the measuring tube 4 is of a standard slump bucket inner cavity structure, or on the basis of a standard slump bucket, the upper end opening part is slightly extended.
The lateral wall lower extreme of surveying pipe 4 evenly is equipped with lug 41 around measuring section of thick bamboo 4, and the lower terminal surface of lug 41 and the lower terminal surface of surveying pipe 4 are the parallel and level, are equipped with the mounting groove 411 that the opening is down on the lug 41.
As shown in fig. 3, a sealing plate 9 is fixedly arranged on an opening of the mounting groove 411 to seal the opening of the mounting groove 411, a pressure sensor 7 is fixed at the bottom of the mounting groove 411, a spring 8 is fixed at a detection end of the pressure sensor 7, a probe 10 is fixed on the spring 8, a free end of the probe 10 penetrates through the sealing plate 9, and the free end of the probe 10 can freely retract on the sealing plate 9. When the probe 10 is pressed, the probe 10 retracts inwards, the retracted probe 10 presses the spring 8, the elastic force on the spring 8 triggers the pressure sensor 7, and the pressure sensor 7 is connected with the controller to transmit a triggering signal.
In one embodiment, the number of the projections 41 is not less than three, and the three projections 41 are respectively arranged at an included angle of 120 °, and the lower end surface of the measuring tube 4 is completely tightly connected with the flat plate 31 when the probes 10 on the three projections 41 are all pressed by using the principle that three points define a plane.
As shown in fig. 2, a connecting sleeve 45 is fixedly arranged on an opening at the upper end of the measuring tube 4, a concrete feeding tube 46, a water delivery tube 43 and an ultrasonic ranging module 44 are fixedly arranged on the connecting sleeve 45, wherein the concrete feeding tube 46 is connected with a sampling pump 5 fixedly arranged on the first bracket 1, the water delivery tube 43 is connected with a water pump 6 fixedly arranged on the second bracket 2, and the water delivery tube 43 is connected with the spray nozzle 33; the measuring tube 4 is also provided with a vibrating device 42 for compacting the concrete.
In one embodiment, the two ends of the driving screw 12 are respectively connected with the first bracket 1 through thrust bearings.
In one embodiment, the vibrating device 42 includes a mounting seat 421, a motor 422, and a weight 423, the mounting seat 421 is fixed on the side wall of the measuring pipe 4, the motor 422 is mounted on the mounting seat 421, and the weight 423 is eccentrically fixed on the output shaft of the motor 422.
In one embodiment, the connecting sleeve 45 is provided with an air vent 451 for exhausting air discharged when vibrating the concrete.
When the invention is used, the measuring pipe 4 is fixedly supported on the first support 1 and the second support 2 by the water conveying pipe 43 and the concrete feeding pipe 46, the electric cylinder 32 retracts to enable the flat plate 31 to be closed and positioned at a horizontal position, the first support 1 and the second support 2 drive the lifting sleeve 3 to ascend until the flat plate 31 triggers at least three probes 10, and the fact that the flat plate 31 is tightly connected with the lower end opening of the measuring pipe 4 is shown; the concrete to be detected is sucked into the measuring pipe 4 from the mixer through the sampling pump 5, meanwhile, the vibration device 42 is started to discharge air in the concrete, until the ultrasonic distance measuring module 44 detects that the filling amount reaches the standard height of 300mm, the filling of the concrete is stopped, the vibration device 42 is closed, the first support 1 and the second support 2 drive the lifting sleeve 3 to descend by 300mm, the ultrasonic distance measuring module 44 is started to detect the height of the concrete after the concrete sample does not slump any more, and the slump is obtained through simple calculation; after the measurement is finished, the water pump 6 is started to wash the measuring pipe 4 and the lifting sleeve 3, meanwhile, the electric cylinder 32 extends to open the flat plate 31, and the waste material slides out along the flat plate 31.
The automatic detection equipment for the concrete slump, disclosed by the invention, is reasonable in structure, and time and labor are saved by pumping the concrete to be detected into the measuring pipe from the stirrer through the sampling pump for measurement; the collapse distance of the concrete is measured through the ultrasonic ranging module, so that the precision is higher; the concrete is compacted through the vibration device, air bubbles in the concrete are removed, and the precision is further improved; after the measurement is finished, the flat plate is opened, the water pump is started, and the measuring device can be automatically flushed so as to carry out the next measurement, so that the detection efficiency is high; the device has the advantages of reasonable structure, convenience in use, high precision and the like, and effectively solves the problem of large error of manually measured concrete slump.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides an automatic check out test set of concrete slump, characterized by: the device comprises a first support (1), a second support (2), a lifting sleeve (3), a measuring pipe (4), a sampling pump (5) and a water pump (6), wherein a transmission screw (12) is vertically arranged on the first support (1), and two ends of the transmission screw (12) are respectively rotatably connected with the first support (1); the lower end of the first support (1) is fixedly provided with a stepping motor (11), and an output shaft of the stepping motor (11) is in transmission connection with a transmission lead screw (12); the transmission screw rod (12) is also sleeved with an internal thread sleeve (13), and the internal thread sleeve (13) is in threaded transmission connection with the transmission screw rod (12);
a guide sliding rod (21) is vertically arranged on the second support (2), and two ends of the guide sliding rod (21) are respectively fixedly connected with the second support (2); the guide sliding rod (21) is also sleeved with a guide sleeve (22), and the guide sleeve (22) is connected with the guide sliding rod (21) in a sliding manner;
the lifting sleeve (3) is vertically arranged, and the lifting sleeve (3) is fixedly connected with the internal thread sleeve (13) and the guide sleeve (22) respectively; a plurality of spray heads (33) are uniformly arranged on the edge of an opening at the upper end of the lifting sleeve (3); a flat plate (31) is arranged at an opening at the lower end of the lifting sleeve (3), one end of the flat plate (31) is hinged with the lifting sleeve (3), and the other end of the flat plate (31) is connected with the lifting sleeve (3) through an electric cylinder (32);
the measuring tube (4) is vertically sleeved in the inner cavity of the lifting sleeve (3), the measuring tube (4) is provided with a conical hollow inner cavity, and one end of the measuring tube (4) with the larger inner cavity diameter faces downwards; the lower end of the side wall of the measuring tube (4) is uniformly provided with a bump (41) around the measuring tube (4), the lower end face of the bump (41) is flush with the lower end face of the measuring tube (4), and the bump (41) is provided with a mounting groove (411) with a downward opening;
a sealing plate (9) is arranged on an opening of the mounting groove (411), a pressure sensor (7) is fixed at the bottom of the mounting groove (411), a spring (8) is fixed at the detection end of the pressure sensor (7), a probe (10) is fixed on the spring (8), and the free end of the probe (10) penetrates out of the sealing plate (9);
a connecting sleeve (45) is fixedly arranged on an opening at the upper end of the measuring pipe (4), a concrete feeding pipe (46), a water conveying pipe (43) and an ultrasonic ranging module (44) are fixedly arranged on the connecting sleeve (45), wherein the concrete feeding pipe (46) is connected with a sampling pump (5) fixedly arranged on the first support (1), the water conveying pipe (43) is connected with a water pump (6) fixedly arranged on the second support (2), and meanwhile, the water conveying pipe (43) is connected with a spray head (33); and the measuring pipe (4) is also provided with a vibrating device (42) for compacting concrete.
2. The automatic detection equipment of concrete slump of claim 1, which is characterized in that: and two ends of the transmission screw rod (12) are respectively and rotatably connected with the first bracket (1) through thrust bearings.
3. The automatic detection equipment of concrete slump of claim 1, which is characterized in that: the number of the convex blocks (41) is not less than three.
4. The automatic detection equipment of concrete slump of claim 1, which is characterized in that: the vibrating device (42) comprises a mounting seat (421), a motor (422) and a balancing weight (423), wherein the mounting seat (421) is fixed on the side wall of the measuring pipe (4), the motor (422) is mounted on the mounting seat (421), and the balancing weight (423) is eccentrically fixed on an output shaft of the motor (422).
5. The automatic detection equipment of concrete slump of claim 1, which is characterized in that: the connecting sleeve (45) is provided with an exhaust hole (451).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887871.5A CN111830246A (en) | 2020-08-28 | 2020-08-28 | Automatic detection equipment of concrete slump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887871.5A CN111830246A (en) | 2020-08-28 | 2020-08-28 | Automatic detection equipment of concrete slump |
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| CN111830246A true CN111830246A (en) | 2020-10-27 |
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| CN202010887871.5A Pending CN111830246A (en) | 2020-08-28 | 2020-08-28 | Automatic detection equipment of concrete slump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285333A (en) * | 2020-11-14 | 2021-01-29 | 衡阳市银利实业有限公司 | Concrete slump test equipment |
| CN112540041A (en) * | 2020-12-04 | 2021-03-23 | 江苏五环建设有限公司 | Automatic concrete slump rapid detection device for building |
| CN115616201A (en) * | 2022-11-28 | 2023-01-17 | 江苏四通路桥工程有限公司 | Concrete detection device and method for road and bridge construction |
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| CN112285333A (en) * | 2020-11-14 | 2021-01-29 | 衡阳市银利实业有限公司 | Concrete slump test equipment |
| CN112540041A (en) * | 2020-12-04 | 2021-03-23 | 江苏五环建设有限公司 | Automatic concrete slump rapid detection device for building |
| CN115616201A (en) * | 2022-11-28 | 2023-01-17 | 江苏四通路桥工程有限公司 | Concrete detection device and method for road and bridge construction |
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Application publication date: 20201027 |