CN112051393A - Concrete shrinkage tester for simulating construction site - Google Patents
Concrete shrinkage tester for simulating construction site Download PDFInfo
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- CN112051393A CN112051393A CN202010983818.5A CN202010983818A CN112051393A CN 112051393 A CN112051393 A CN 112051393A CN 202010983818 A CN202010983818 A CN 202010983818A CN 112051393 A CN112051393 A CN 112051393A
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- side wall
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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; ceramics; glass; bricks
- G01N33/383—Concrete, cement
Abstract
The invention discloses a concrete shrinkage tester for simulating construction sites, which comprises a base, wherein a movable bottom plate is arranged above the base, the top of a support column is fixedly connected with a laboratory, a compressor is arranged in the laboratory, the compressor is connected with a temperature control device, the side wall of the laboratory positioned at the two sides of the compressor is provided with a laboratory opening penetrating through the side wall, the laboratory opening is connected with a laboratory table through an adjusting device, and the laboratory table is connected with a test board through a hard spring. The compressor is arranged, so that the temperature in the experiment ports on the two sides can be adjusted, the construction effect of concrete in different outdoor seasons can be simulated, the detection effect of the shrinkage rate of the concrete is guaranteed, the concrete in the test bench is vibrated under the action of the transmission chain wheel, the rotating shaft, the transmission gear, the rotating chain wheel and the meshing gear through the driving of the motor, the vibration of the concrete through equipment during construction is simulated, and the detection effect is guaranteed to be more convincing.
Description
Technical Field
The invention relates to the technical field of concrete detection equipment, in particular to a concrete shrinkage tester for simulating a construction site.
Background
The concrete is a mixture prepared by mixing a cementing material (organic, inorganic or organic-inorganic composite), granular aggregate, water and a chemical additive and a mineral admixture which need to be added according to a proper proportion, or a composite material with an aggregate structure is formed after hardening (the common composite material is a cementing material, water, fine aggregate and coarse aggregate which are added with the additive and the mineral admixture if necessary and are matched according to a proper proportion, shrinkage deformation is the inherent characteristic of a cement concrete material and is the main reason of the performance deterioration of the concrete material, in recent years, the cement concrete technology develops towards the direction of low water-cement ratio, high fluidity and high strength, the problem of cracking and damage of the concrete caused by excessive shrinkage deformation is more prominent, and the shrinkage deformation of the concrete is greatly intensified due to the reduction of the water-cement ratio, the use of a high-efficiency water reducing agent, the increase of the slurry content and the like, the specific gravity of cracks due to early plastic shrinkage deformation and self-shrinkage deformation is the highest. 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.
When the existing tester is used for detection, different temperatures cannot be adjusted to simulate the shrinkage rate of concrete located outdoors under different temperature conditions (winter and summer), and the existing detection equipment cannot effectively simulate the construction condition of the concrete on a construction site when detecting, so that the detection data is inaccurate, and after the concrete is detected, the concrete and the instrument are inconvenient to demould, and the next detection is influenced.
Disclosure of Invention
The invention aims to solve the problems that different temperatures cannot be adjusted to simulate the shrinkage rate of concrete located outdoors under different temperature conditions (winter and summer) when the existing tester is used for detection, the construction condition of the concrete on a construction site cannot be effectively simulated when the existing detection equipment is used for detection, so that the detection data is inaccurate, and the concrete and the tester are inconvenient to demould after the concrete is detected, so that the next detection is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a concrete shrinkage apparatus of simulation job site, includes the base, base top fixedly connected with support column, the support column lateral wall is provided with the removal bottom plate, support column top fixedly connected with laboratory, be provided with the compressor in the laboratory, the compressor is connected with temperature control device, and the laboratory chamber lateral wall that is located the compressor both sides sets up the laboratory gap that runs through the lateral wall, the laboratory gap is connected with the laboratory bench through adjusting device, there is the testboard laboratory bench through stereoplasm spring coupling, the experimental groove of lateral wall around running through is seted up to the testboard, be provided with the survey device in the experimental groove, base one side is provided with the motor, the motor is connected with vibrator.
Preferably, the outer side wall of the support column is sleeved with a screw rod ring, the bottom of the screw rod ring is fixedly connected with a knob ring, the knob ring is fixedly connected with the base, and the movable bottom plate is in threaded connection with the screw rod ring through a nut.
Preferably, temperature control device is including laying the condenser pipe in one side laboratory entrance lateral wall department, the opposite side the laboratory entrance lateral wall has been laid the evaporimeter, laboratory entrance lateral wall department sets up the fan mouth that runs through the lateral wall, be provided with electric fan in the fan mouth.
Preferably, adjusting device includes the connecting block of fixed connection in the laboratory bench bottom, connecting block fixedly connected with regulating spindle, the regulating spindle tip is through the screw thread post and the laboratory port lateral wall threaded connection who runs through the laboratory port lateral wall, screw thread post tip fixedly connected with regulating block.
Preferably, the survey device is including seting up the rectangle mouth in the both sides of experiment tank bottom, the testboard rotates and is connected with the horizontal post that is the level setting, horizontal post one end fixedly connected with knob is located the rectangle intraoral be provided with the screw thread layer on the horizontal post lateral wall, screw thread layer threaded connection has the rectangle nut slider, rectangle nut slider fixedly connected with extrusion dish, extrusion dish and experiment tank inside wall sliding connection.
Preferably, a moving plate is arranged on one side of the laboratory, two distance measuring instruments are arranged on the moving plate, a moving hole is formed in the laboratory, and a moving column matched with the moving hole is fixedly connected to the side wall of the moving plate.
Preferably, vibrator includes the connecting seat of fixed connection on the laboratory lateral wall, be provided with the motor on the connecting seat, the motor output is connected with drive sprocket, be provided with two axis of rotation in the laboratory, axis of rotation lateral wall fixedly connected with drive gear, the axis of rotation tip runs through the outside extension of laboratory lateral wall to be connected with rotatory sprocket, drive sprocket passes through the chain and is connected with a plurality of rotatory sprocket transmission.
Preferably, a transmission port is formed in the experiment table, a horizontal shaft is fixedly connected in the transmission port, a meshing gear meshed with the transmission gear is fixedly connected to the outer side wall of the horizontal shaft, and a plurality of collision cams are fixedly connected to the outer side wall of the horizontal shaft.
Preferably, a fixed shaft is fixedly connected in the experimental port, and a blocking side plate is rotatably connected to the outer side wall of the fixed shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up the compressor for the intraoral temperature in experiment of both sides can be adjusted, thereby realizes simulating the construction effect of concrete under the outdoor different seasons, guarantees the detection effect to the concrete shrinkage factor.
2. Through the motor drive, make the conflict cam rotate under drive sprocket, axis of rotation, drive gear, rotatory sprocket and meshing gear's effect and realize the vibrations to the concrete that is located the testboard to the simulation is through the oscillation of equipment to the concrete when the construction, guarantees that the detection effect has more convincing.
3. After accomplishing the detection, can be located the intraoral laboratory bench of experiment through the reversal for the experimental groove that is located on the laboratory bench is invertd, and strikes vibrations through the control cam of contradicting to hitting of testboard, realizes droing the concrete, makes things convenient for the maintenance of equipment and detects the experiment use next time.
Drawings
FIG. 1 is a schematic structural diagram of a concrete shrinkage tester for simulating a construction site according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic top view of a concrete shrinkage tester for a simulation construction site according to the present invention.
In the figure: the device comprises a base, a support column 2, a movable bottom plate 3, a laboratory 4, a compressor 5, a laboratory opening 6, a laboratory table 7, a test table 8, an experimental groove 9, a motor 10, a lead screw ring 11, a knob ring 12, a condenser pipe 13, an evaporator 14, an electric fan 15, an adjusting shaft 16, a threaded column 17, a rectangular opening 18, a horizontal column 19, an extrusion disc 20, a movable plate 21, a distance measuring instrument 22, a movable column 23, a transmission chain wheel 24, a rotating shaft 25, a transmission gear 26, a rotating chain wheel 27, an engaging gear 28, an abutting cam 29 and a blocking side plate 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a concrete shrinkage tester for simulating construction sites comprises a base 1, a support column 2 is fixedly connected above the base 1, a movable bottom plate 3 is arranged on the outer side wall of the support column 2, further, a screw ring 11 is sleeved on the outer side wall of the support column 2, a knob ring 12 is fixedly connected to the bottom of the screw ring 11, the knob ring 12 is fixedly connected with the base 1, the movable bottom plate 3 is in threaded connection with the screw ring 11 through a nut, when the movable bottom plate 3 is arranged to perform an experiment through a compressor 5, the movable bottom plate 3 can move upwards to close the bottom of a laboratory 4 through rotating the knob ring 12, and the temperature is guaranteed to be intensively acted on a test bench 8;
the top of the support column 2 is fixedly connected with a laboratory 4, a compressor 5 is arranged in the laboratory 4, the compressor 5 is a main component in an air conditioning system, the compressor is the prior art and is not described herein any more, the compressor 5 is connected with a temperature control device, further, the temperature control device comprises a condenser pipe 13 laid on the side wall of the laboratory opening 6 on one side, an evaporator 14 is laid on the side wall of the laboratory opening 6 on the other side, a fan opening penetrating through the side wall is formed in the side wall of the laboratory opening 6, an electric fan 15 is arranged in the fan opening, and the electric fan is rotated by an automatic small motor;
the side walls of the laboratories 4 positioned at two sides of the compressor 5 are provided with the experiment ports 6 penetrating through the side walls, the experiment ports 6 are connected with the experiment table 7 through an adjusting device, further, the adjusting device comprises a connecting block fixedly connected to the bottom of the experiment table 7, the connecting block is fixedly connected with an adjusting shaft 16, the end part of the adjusting shaft 16 is in threaded connection with the side wall of the experiment port 6 through a threaded column 17 penetrating through the side wall of the experiment port 6, and the end part of the threaded column 17 is fixedly connected with an adjusting block;
the experiment table 7 is connected with a test table 8 through a hard spring, the test table 8 is provided with an experiment groove 9 penetrating through the front side wall and the rear side wall, a measuring device is arranged in the experiment groove 9, furthermore, the measuring device comprises rectangular openings 18 formed in two sides of the bottom of the experiment groove 9, the test table 8 is rotatably connected with a horizontal column 19 which is horizontally arranged, one end of the horizontal column 19 is fixedly connected with a knob, a thread layer is arranged on the outer side wall of the horizontal column 19 positioned in the rectangular opening 18, the thread layer is in threaded connection with a rectangular nut sliding block, the rectangular nut sliding block is fixedly connected with an extrusion disc 20, and the extrusion disc 20 is in sliding connection with;
still further, a moving plate 21 is disposed on one side of the laboratory 4, two distance measuring instruments 22 are disposed on the moving plate 21, the distance measuring instruments 22 are sensor elements, which are common elements for detecting concrete shrinkage, and are not described herein for the prior art, a moving hole is disposed in the laboratory 4, and a moving column 23 matched with the moving hole is fixedly connected to a side wall of the moving plate 21.
One side of the base 1 is provided with a motor 10, and the motor 10 is connected with a vibration device; further, vibrator includes the connecting seat of fixed connection on 4 lateral walls in laboratory, is provided with motor 10 on the connecting seat, and the output of motor 10 is connected with drive sprocket 24, is provided with two axis of rotation 25 in the laboratory port 6, and axis of rotation 25 lateral wall fixedly connected with drive gear 26, and axis of rotation 25 tip run through 6 lateral walls of laboratory port and outwards extend to be connected with rotatory sprocket 27, drive sprocket 24 passes through the chain and is connected with a plurality of rotatory sprocket 27 transmissions.
Furtherly again, the transmission mouth has been seted up in the laboratory bench 7, fixedly connected with horizontal axis in the transmission mouth, the meshing gear 28 that the meshing of horizontal axis lateral wall fixedly connected with drive gear 26 is connected, a plurality of conflict cams 29 of horizontal axis lateral wall fixedly connected with, carry out continuous vibrations concrete through conflict cam 29, fixedly connected with fixed axle in the laboratory mouth 6, the fixed axle lateral wall rotates and is connected with and blocks curb plate 30, can not influence the rotation of laboratory bench 7 when blockking curb plate 30 and can realizing the sealed of laboratory mouth through rotating the connection.
Before the detection, the rectangular nut sliding block drives the extrusion disk 20 to move to the corresponding position of the experimental groove 9 by rotating the vertical shaft, by pouring the detected concrete into the experimental groove 9, when the concrete is poured into the experimental groove 9, by turning on the motor 10, the motor 10 drives the rotating shaft 25 to rotate, the transmission gear 26 on the rotating shaft 25 drives the meshing gear 28 to rotate, when the meshing gear 28 rotates, the abutting cam 29 connected with the meshing gear 28 through the horizontal shaft can rotate, when the abutting cam 29 rotates, the abutting cam 29 can continuously drive the test bench 8 connected through the hard spring to vibrate, the concrete arranged in the test groove 9 in the test bench can realize effective oscillation, therefore, the oscillation effect on the concrete in a construction site is simulated, and the experimental effect processing is effective;
when outdoor weather needs to be simulated, the compressor 5 can be started to enable the compressor 5 to act to generate cold air in the condenser pipe 13 and generate hot air at the evaporator 14, and the temperature is effectively conveyed to the test bench 8 under the action of the electric fan 15, so that samples in the test groove 9 in the test bench 8 can be solidified in different environments, and the influence of different seasons on the concrete shrinkage rate under the outdoor condition can be simulated;
detect the shrinkage distance of the concrete that solidifies in different time ends through the distance measuring instrument that sets up in one side, thereby the completion is to the effective detection of the shrinkage factor of concrete, after the completion detects, when needing to break away from concrete and experimental groove 9, through rotating the regulating block of screw thread post 17 tip, make laboratory bench 7 drive and detect platform 8 and rotate the reversal, make experimental groove 9 opening downward, through opening motor 10, it rotates to drive conflict cam 29, continuous hitting is beaten and is detected platform 8 bottoms, can make concrete and experimental groove 9 break away from under continuous vibrations, and drop, thereby convenient next time detects.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A concrete shrinkage tester for simulating construction sites comprises a base (1) and is characterized in that a supporting column (2) is fixedly connected above the base (1), a movable bottom plate (3) is arranged on the outer side wall of the supporting column (2), a laboratory (4) is fixedly connected to the top of the supporting column (2), a compressor (5) is arranged in the laboratory (4), the compressor (5) is connected with a temperature control device, a laboratory opening (6) penetrating through the side wall is formed in the side wall of the laboratory (4) positioned on the two sides of the compressor (5), the laboratory opening (6) is connected with a laboratory table (7) through an adjusting device, the laboratory table (7) is connected with a test table (8) through a hard spring, the test table (8) is provided with a test groove (9) penetrating through the front side wall and the rear side wall, and a measuring device is, a motor (10) is arranged on one side of the base (1), and the motor (10) is connected with a vibration device.
2. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein a screw ring (11) is sleeved on the outer side wall of the supporting column (2), a knob ring (12) is fixedly connected to the bottom of the screw ring (11), the knob ring (12) is fixedly connected to the base (1), and the moving base plate (3) is in threaded connection with the screw ring (11) through a nut.
3. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein the temperature control device comprises a condensation pipe (13) laid on the side wall of the experimental opening (6) on one side, an evaporator (14) is laid on the side wall of the experimental opening (6) on the other side, a fan opening penetrating through the side wall is formed in the side wall of the experimental opening (6), and an electric fan (15) is arranged in the fan opening.
4. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein the adjusting device comprises a connecting block fixedly connected to the bottom of the experiment table (7), the connecting block is fixedly connected with an adjusting shaft (16), the end of the adjusting shaft (16) is in threaded connection with the side wall of the experiment port (6) through a threaded column (17) penetrating through the side wall of the experiment port (6), and the end of the threaded column (17) is fixedly connected with an adjusting block.
5. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein the testing device comprises rectangular openings (18) formed at two sides of the bottom of the experimental groove (9), the testing platform (8) is rotatably connected with a horizontal column (19) in a horizontal arrangement, one end of the horizontal column (19) is fixedly connected with a knob, a threaded layer is arranged on the outer side wall of the horizontal column (19) in the rectangular opening (18), the threaded layer is in threaded connection with a rectangular nut slider, the rectangular nut slider is fixedly connected with an extrusion disc (20), and the extrusion disc (20) is in sliding connection with the inner side wall of the experimental groove (9).
6. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein a moving plate (21) is arranged on one side of the laboratory (4), two distance measuring instruments (22) are arranged on the moving plate (21), a moving hole is formed in the laboratory (4), and a moving column (23) matched with the moving hole is fixedly connected to the side wall of the moving plate (21).
7. The concrete shrinkage tester for simulating construction sites according to claim 1, wherein the vibration device comprises a connecting seat fixedly connected to the side wall of the laboratory (4), a motor (10) is arranged on the connecting seat, the output end of the motor (10) is connected with a transmission chain wheel (24), two rotating shafts (25) are arranged in the laboratory opening (6), a transmission gear (26) is fixedly connected to the outer side wall of each rotating shaft (25), the end part of each rotating shaft (25) penetrates through the side wall of the laboratory opening (6) to extend outwards and is connected with a rotating chain wheel (27), and the transmission chain wheel (24) is in transmission connection with the plurality of rotating chain wheels (27) through a chain.
8. The concrete shrinkage tester for simulating construction sites according to claim 7, wherein a transmission port is formed in the test bench (7), a horizontal shaft is fixedly connected in the transmission port, a meshing gear (28) meshed with the transmission gear (26) is fixedly connected to the outer side wall of the horizontal shaft, and a plurality of interference cams (29) are fixedly connected to the outer side wall of the horizontal shaft.
9. The concrete contraction tester for simulating construction sites according to claim 1, wherein a fixed shaft is fixedly connected in the experimental opening (6), and a blocking side plate (30) is rotatably connected to the outer side wall of the fixed shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010983818.5A CN112051393B (en) | 2020-09-18 | 2020-09-18 | Concrete shrinkage tester for simulating construction site |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010983818.5A CN112051393B (en) | 2020-09-18 | 2020-09-18 | Concrete shrinkage tester for simulating construction site |
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| CN112051393A true CN112051393A (en) | 2020-12-08 |
| CN112051393B CN112051393B (en) | 2022-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199692A (en) * | 2021-12-15 | 2022-03-18 | 浙江大学 | Device and method for testing shrinkage of concrete under multi-field coupling effect |
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| CN112051393B (en) | 2022-11-01 |
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Effective date of registration: 20221011 Address after: Room 1101, No. 393, Linjiang Avenue, Tianhe District, Guangzhou, Guangdong 510000 (No. 04, No. 05) Applicant after: Guangdong Dongyuan Construction Engineering Management Co.,Ltd. Address before: 274009 Heze University, No. 2269, Daxue Road, Mudan District, Heze City, Shandong Province Applicant before: Wang Gangqiang |
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