CN113624950B - Test fixture that concrete block received humiture influence - Google Patents
Test fixture that concrete block received humiture influence Download PDFInfo
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- CN113624950B CN113624950B CN202111185684.3A CN202111185684A CN113624950B CN 113624950 B CN113624950 B CN 113624950B CN 202111185684 A CN202111185684 A CN 202111185684A CN 113624950 B CN113624950 B CN 113624950B
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- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 108
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 230000005684 electric field Effects 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 11
- 230000001629 suppression Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 53
- 230000035699 permeability Effects 0.000 description 18
- 230000015556 catabolic process Effects 0.000 description 8
- 238000010008 shearing Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 240000002853 Nelumbo nucifera Species 0.000 description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005685 electric field effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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Abstract
The invention relates to the technical field of concrete block detection, and discloses a test fixture for concrete blocks affected by temperature and humidity, which comprises a detection chamber, a driving device, a regulating device, a detection device and an object stage, wherein the detection chamber is arranged on a workbench and is connected with the driving device, the driving device is communicated with a pipeline of the regulating device, the regulating device is tightly connected with the detection chamber, the detection chamber comprises a detection cavity, an object carrying plate is arranged in the detection cavity, the regulating device is movably connected with the object carrying plate, the detection cavity is divided into a pressing groove and a jacking groove by the object carrying plate, the pressing groove and the jacking groove are respectively arranged on the upper layer and the lower layer of the detection cavity, the vertical central lines of the pressing groove and the jacking groove are arranged in a staggered manner, the object carrying plate is arranged on the lower side of the pressing groove, a staggered gap is arranged between the lower side of the pressing groove and the upper side of the jacking groove, and the concrete blocks can frequently change in temperature and weather when in use, the performance of the concrete block needs to be tested under different conditions.
Description
Technical Field
The invention relates to the technical field of concrete block detection, in particular to a test fixture for concrete blocks affected by temperature and humidity.
Background
In recent years, with the continuous expansion of the environmental protection concept, clay brick, a product consuming soil and energy, is gradually replaced by various building blocks, wherein the concrete building blocks have excellent soil-saving and energy-saving properties and are widely used.
The existing concrete block is made of materials such as fly ash, coal slag or natural sand and the like as raw materials, and comprises a solid block and a hollow block, wherein the hollow block has the lowest cost, and the comprehensive performance can meet most building requirements. However, because the hollow building block is internally provided with a plurality of through holes, in order to meet the requirements of different occasions, the performance of the building block needs to be detected, the performance of the conventional concrete is detected manually, the repeatability is low, and the performance detection precision is not high.
In addition, the concrete block can often meet with temperature variation and climate change when using, and temperature difference and humidity change all can cause the influence to concrete block intensity, consequently need detect concrete block performance under different conditions to the ultimate strength of concrete block under different conditions needs to be confirmed, safe application scope is satisfied.
Disclosure of Invention
The invention aims to provide a test fixture for concrete blocks affected by temperature and humidity, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a concrete block receives test fixture of humiture influence, including detecting the room, a drive uni, regulation and control device, detection device and year thing board, detect the room and arrange in on the workstation, it connects to detect room and drive arrangement, drive arrangement and regulation and control device pipeline intercommunication, regulation and control device and detection room fastening connection, detection device and drive arrangement connect, it is including detecting the chamber to detect the room, it arranges in and detects the intracavity to carry the thing board, regulation and control device and year thing board swing joint, it will detect the chamber and cut apart into suppression groove and jacking groove to carry the thing board, suppression groove and jacking groove lie in respectively and detect the chamber upper and lower floor, the vertical central line misalignment of suppression groove and jacking groove arranges, it is located suppression groove downside to carry the thing board, it is equipped with the dislocation clearance to suppress the side between groove downside and jacking groove.
The concrete block is detected in a detection chamber which is an installation foundation of a driving device, the concrete block is extruded in four directions through the driving device, the detection chamber is matched to extrude the concrete block in all directions, so that the performance of the concrete block is detected, the humidity of the concrete block is adjusted through a regulating device, so that the performance of the concrete block under different humidity conditions is detected, the temperature of the concrete block is adjusted through the detection device, the performance of the concrete block under different temperatures is automatically detected, one half of the bottom side of the concrete block is supported through a carrying plate, the carrying plate is fixed in a detection cavity, the detection cavity is divided into a pressing groove and a jacking groove which are arranged up and down through the carrying plate, downward pressure is provided in the pressing groove through the arrangement of a staggered center, upward jacking force is provided in the jacking groove, and shearing force is generated in the vertical center section of the concrete block by the pressure and the jacking force, accord with concrete block building performance, vertical central section is stress concentration region, improves and detects accurate performance, and the dislocation clearance between suppression groove and the jacking groove is concrete block's deformation detection area, and the dislocation clearance height is higher than concrete block height, allows concrete block half section upwards to deform.
Further, the detection chamber horizontal direction is equipped with two drive chambeies of perpendicular arrangement, be equipped with the feed inlet between two drive chambeies, drive arrangement and drive chamber are connected, drive arrangement includes driving motor, push down the subassembly, roof and extrusion piece, driving motor is equipped with four groups, driving motor arranges the suppression groove in respectively, jacking groove and drive intracavity, driving motor divide into along the space direction, in, three-layer down, the drive chamber is located the middle level, the driving motor output is equipped with the screw nut pair, the screw nut pair includes lead screw and nut, four nuts respectively with push down the subassembly, roof and extrusion piece transmission are connected, roof and jacking groove sliding connection, extrusion piece and drive chamber sliding connection, push down the subassembly and arrange the jacking inslot in, push down the subassembly including the clamp plate, clamp plate and suppression groove sliding connection, the nut and the clamp plate transmission that are located the upper strata are connected.
The driving cavities provide two horizontal orthogonal driving forces, the two adjacent vertical planes of the concrete block are pressurized, so that the strength of the concrete block is detected, a feeding hole is formed between the two driving cavities, the concrete block is fed into the detection cavity through the feeding hole, the driving motor is used as a main power source for providing torque, the torque is converted into linear displacement through the screw-nut pair, so that the top plate, the pressing plate and the two extrusion blocks are respectively driven to move and extrude the concrete block, so that the performance of the concrete block under different temperature and humidity conditions is detected, stable extrusion force is provided through the driving of the driving motor, the pressure on the concrete block and the output torque of the driving motor are in a linear proportion, the detection accuracy performance is improved, the strength and the brittleness of the concrete block under different temperature and humidity conditions are different, and the detection performance is met through the output torque of the driving motor, driving motor sets up four groups, carry out the quadriversal extrusion to concrete block, two lateral walls that detect the chamber carry on spacingly to concrete block, the supplementary extrusion that carries on six directions, clamp plate and suppression groove wall sliding connection, push down concrete block, it is located the clamp plate downside to carry the thing board, clamp plate and concrete block contact segment are unanimous with roof and concrete block contact segment area, adjacent building block interval when horizontal clearance is less than concrete block building, driving motor through the drive chamber to two level arrangements fixes, carry out sliding guide through the jacking groove to the roof.
Further, the regulating and controlling device comprises an axial flow fan, an electric field generator and a liquid collecting chamber, the axial flow fan is arranged in a jacking groove, an air outlet of the axial flow fan faces to the inner cavity of the liquid collecting chamber, one side of the liquid collecting chamber is provided with a liquid outlet, the outer side of the liquid outlet is provided with a reversing valve, the reversing valve is a four-way valve, three outlets of the reversing valve are respectively communicated with a carrying plate and two extrusion blocks through pipelines, outlets of the pipelines on the extrusion blocks face to two vertical sides of the building block to be detected, a diversion groove on the carrying plate, an outlet of the pipeline connected with the carrying plate faces to the diversion groove, the upper side of the diversion groove is provided with a plurality of through holes, the through holes are communicated with air holes in the middle of the building block to be detected, the electric field generator is arranged in the jacking groove, a negative electrode plate is arranged at the negative end of the electric field generator, a positive electrode plate is arranged at the positive electrode of the electric field generator, the electric field generator is respectively communicated with the negative electrode plate and the positive electrode plate through wires, the electric field generator, a negative electrode plate detection circuit, the negative plate is arranged in the guiding gutter, is equipped with the groove of converging on the clamp plate, and the groove downside of converging is equipped with a plurality of mouths of converging, and the mouth of converging is with wait to detect the middle gas pocket intercommunication of building block, and detection device includes sensitive galvanometer, and the positive plate is arranged in the groove of converging, and sensitive galvanometer establishes ties on detection circuitry.
An air source is provided by an axial flow fan, water vapor in a liquid collecting chamber is driven to flow, air flow formed by the water vapor is led out by a reversing valve which is a four-way valve, one inlet and three outlets are respectively connected with two extrusion blocks through pipelines and face to two adjacent vertical planes of adjacent concrete blocks, each valve port is independently controlled, two sides of each concrete block can be sequentially detected respectively, the detection precision is improved, the remaining outlet is communicated with a diversion trench through a pipeline, an electric field is provided by an electric field generator, the negative end of the electric field generator is connected with a negative plate, the positive end is connected with a positive plate, the negative plate is arranged in the diversion trench, the positive plate is arranged in a confluence trench, a breakdown gap is formed between the negative plate and the positive plate, when water vapor permeability detection is carried out, permeation is carried out from the outer side of each concrete block inwards, through holes in the middle of each concrete block are kept dry in an initial state, the air gap between the negative plate and the positive plate can not be punctured to generate current, the detection circuit is disconnected, the moisture-containing air flow is continuously blown to one side of the concrete building block by the axial flow fan, the humidity is increased along with the increase of water vapor, the pressure is increased, the water vapor permeability is increased, the water vapor permeates into the middle through hole of the concrete building block to increase the arc puncture distance of the negative plate, the humidity is increased along with the increase of water vapor, the current generated by the detection circuit is increased, the current of the detection circuit is detected by the sensitive current meter, the permeability of the concrete building block is detected according to the detection current under different humidities, after the permeability detection is completed, the outlet of the reversing valve communicated with the two extrusion blocks is closed, the moisture-containing air flow is directly led to the diversion trench from the reversing valve, the air supply performance is ensured by the axial flow fan, the water content of the air flow flowing into the diversion trench is kept stable, and the negative plate can be charged to the water vapor, the circuit is conducted to generate current, the current value detected by the sensitive galvanometer is kept consistent, the driving motor on the upper layer enables the pressing plate to press the concrete block through the screw-nut pair, the driving motor on the middle layer enables the two extrusion blocks to move towards the inner side of the concrete block, the inner part is extruded, the lower side of the concrete block is stressed by self gravity and pressure of the pressure plate, the stress is more concentrated than that of the upper layer, the strength is reduced under high humidity immersion to form a deformation burst opening, the resistance of the through hole in the middle of the concrete block is minimum, the hole wall is burst inwards to reduce the local diameter, because the deformation position is at the lower layer of the through hole, the gas at the lower end of the through hole is contracted, the gas at the upper end is expanded, pressure loss is generated by doing work on the side wall, the upward flow velocity is reduced, therefore, the water vapor density of the upper layer is reduced, the current of the detection circuit is reduced, and the output torque of each driving motor is the limit stress of the concrete building block.
Preferably, the regulating device comprises a plurality of corona wires, the corona wires are electrically connected with the negative plate, and the upper ends of the corona wires are inserted into the air holes of the building blocks to be detected. The arc breakdown length is prolonged through the corona wire, and the concrete building block can adapt to concrete building blocks of different specifications.
Further, clamp plate one side is equipped with the rotary trough, and the subassembly that pushes down still includes changeing the board, changes the board and changes the groove and rotate the connection, changes the groove and converges groove intermittent type intercommunication, changes and is equipped with the earial drainage groove on the board, earial drainage groove and rotary trough intercommunication, changes the board and keeps away from rotary trough one side and cross and wait to detect building block upside central line.
The clamp plate rotates the direction through changeing the groove to changeing the board, when carrying out load detection at the shear force of exerting about the concrete block, keep moisture air current velocity of flow remain stable, change board one end and cross the concrete block central line that waits to detect, when concrete block deformation under the shear force effect, the roof drives the concrete block of upper end and moves up along the dislocation clearance, thereby make the central line shift up, make changeing the board rotate along changeing the groove, thereby make changeing groove and converging groove intercommunication, after passing through the negative plate to steam lotus electricity, make steam negative electricity, steam shifts up under the electric field effect, after changeing groove and converging groove intercommunication, the lotus electricity steam gets into changeing the groove from the earial drainage groove, make the electric current reduction of circulation in the circuit, the pressure that the torque of the driving motor output of lower floor caused this moment is concrete block limit shear force.
Furthermore, the detection device also comprises a heating wire which is arranged on the lower side of the pressing groove and is far away from one side of the driving cavity.
The concrete blocks are heated through the heating wires, so that the strength of the concrete blocks at different temperatures is detected, the concrete blocks are heated in a unilateral mode through the arrangement of the heating wires, the unilateral heating strength performance of the concrete blocks under the condition of fire is simulated, steam on the concrete blocks can be resolved through the heating of the heating wires, the concrete blocks are dried again, and repeated experiments are facilitated.
Further, be equipped with heat transfer passageway on the detection room, be equipped with the heat transfer mouth on the collection liquid room, detection device still includes the heat exchanger fin, and in the heat transfer passageway was arranged in to the heat exchanger fin, the heater strip passed through the heat exchanger fin and collected the indoor liquid heat transfer of liquid, and regulation and control device still includes the commentaries on classics oar, and the commentaries on classics oar is arranged in between negative plate and the corona line, and commentaries on classics oar and guiding gutter intermittent type formula rotate to be connected, and the negative plate passes through the contact and connects with the commentaries on classics oar electricity.
Install the heat transfer piece through heat transfer channel, the heat transfer channel wall sets up the insulating layer, guarantee heat exchange efficiency, the heater strip heats the indoor liquid of collection liquid through the heat transfer piece, thereby make humidity rise fast, enlarge the humidity threshold value, improve the detection performance, the negative plate rotor conducts electricity to the corona wire, rotor and water conservancy diversion groove wall friction contact, when steam content is lower, can't overcome the frictional force and make the rotor rotate, when steam content rises, current-carrying body increase, thereby make the access current increase, improve the detection performance, the gaseous kinetic energy of moisture increases, make the rotor overcome the frictional force and rotate, thereby make the upwards flow of lotus electric moisture along concrete block spiral, make the velocity of flow reduce, cushion, prevent that the velocity of flow from influencing the electrical property of charge too fast.
Preferably, the rotary paddle is electrically connected with the corona wire, and the bottom end of the corona wire is connected with the axis of the rotary paddle in a sliding manner. The corona wire is conducted through the rotary paddle, so that the corona wire can generate arc breakdown in the concrete block, the movement interference is prevented through contact connection, and the rotation smoothness is improved.
Compared with the prior art, the invention has the following beneficial effects: when the water vapor permeability is detected, the water vapor permeability is detected from the outer side of the concrete block to the inner side, the through hole in the middle of the concrete block is kept dry in an initial state, the moisture-containing air flow is continuously blown to one side of the concrete block by the axial flow fan, the humidity is increased along with the increase of the water vapor, the pressure is increased, the water vapor permeability is increased, the water vapor permeates into the through hole in the middle of the concrete block, the arc breakdown distance of a negative plate is increased, and the water permeability of the concrete block is detected according to the detection current under different humidity; after the permeability detection is finished, the outlets of reversing valves communicated with the two extrusion blocks are closed, the water-containing airflow is directly led to the diversion trench from the reversing valves, so that the negative plates charge water vapor, the circuit is conducted, current is generated, the pressing plate presses the concrete block downwards, the two extrusion blocks move towards the inner side of the concrete block by the driving motor in the middle layer and internally extrude to form a deformation bursting opening, the resistance of a through hole in the middle of the concrete block is minimum, the hole wall is suddenly changed towards the inner side, the local diameter is reduced, the gas at the lower end of the through hole is contracted and the gas at the upper end of the through hole is expanded due to the deformation position at the lower layer of the through hole, pressure loss is generated by applying work to the side wall, the upward flow velocity is reduced, the density of the water vapor at the upper layer is reduced, the current of the detection circuit is reduced, and the output torque of each driving motor is the limit stress of the concrete block at the moment; when carrying out load detection at the shear force of applying from top to bottom to the concrete block, keep moisture air current velocity of flow remain stable, change board one end and cross the concrete block central line of treating the detection, when the concrete block is out of shape under the shear force effect, the concrete block that the roof drove the upper end moves up along the dislocation clearance, thereby make the central line shift up, make the commentaries on classics board rotate along the commentaries on classics groove, thereby make commentaries on classics groove and confluence groove intercommunication, after through the negative plate to steam lotus electricity, make steam negatively charged, steam shifts up under the electric field effect, after commentaries on classics groove and confluence groove intercommunication, the lotus electricity steam gets into the commentaries on classics groove from the earial drainage groove, the electric current that makes the circulation in the circuit reduces, the pressure that the torque of the driving motor output of lower floor caused at this moment is concrete block limit shear force.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic illustration of the power transmission configuration of the present invention;
FIG. 3 is a schematic diagram of a humidity and temperature control structure according to the present invention;
FIG. 4 is a schematic view of a shear detection configuration of the present invention;
FIG. 5 is a schematic diagram of the detection circuit of the present invention;
FIG. 6 is an enlarged view of portion A of the view of FIG. 4;
FIG. 7 is an enlarged view of portion B of the view of FIG. 3;
in the figure: 1-a detection chamber, 11-a detection cavity, 111-a pressing groove, 112-a jacking groove, 12-a feeding hole, 13-a driving cavity, 14-a heat exchange channel, 2-a driving device, 21-a driving motor, 22-a screw-nut pair, 23-a pressing component, 231-a pressing plate, 2311-a rotating groove, 2312-a converging groove, 232-a rotating plate and 2321-a drainage groove, 24-top plate, 25-extrusion block, 3-regulating device, 31-axial flow fan, 32-electric field generator, 33-liquid collecting chamber, 34-reversing valve, 35-rotary paddle, 36-corona wire, 4-detecting device, 41-sensitive ammeter, 42-heating wire, 43-heat exchange sheet, 5-objective plate, 51-guiding gutter and 6-workbench.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that:
as shown in FIGS. 1 to 7, a testing fixture for concrete blocks affected by temperature and humidity comprises a testing chamber 1 and a driving device 2, regulation and control device 3, detection device 4 and year thing board 5, it arranges in on workstation 6 to detect room 1, it connects to detect room 1 and drive arrangement 2, drive arrangement 2 and the 3 pipeline intercommunication of regulation and control device, regulation and control device 3 and the 1 fastening connection of detection room, detection device 4 and drive arrangement 2 are connected, it includes detection chamber 11 to detect room 1, it arranges in detection chamber 11 to carry thing board 5, regulation and control device 3 and the 5 swing joint of year thing board, it cuts apart into indent 111 and jacking groove 112 to carry thing board 5 with detection chamber 11, indent 111 and jacking groove 112 are located respectively and detect the chamber 11 upper and lower floor, the vertical central line dislocation center in indent 111 and jacking groove 112 is arranged, it is located indent 111 downside to carry thing board 5, be equipped with the dislocation clearance between indent 111 downside and jacking groove 112 upside.
The concrete block is detected in a detection chamber 1, the detection chamber 1 is an installation foundation of a driving device 2, the concrete block is extruded in four directions through the driving device 2, the detection chamber is matched to extrude the concrete block in all directions, the performance of the concrete block is detected, the humidity of the concrete block is adjusted through a regulating device 3, the performance of the concrete block under different humidity conditions is detected, the temperature of the concrete block is adjusted through a detection device 4, the performance of the concrete block under different temperatures is automatically detected, a half of the bottom side of the concrete block is supported through a carrying plate 5, the carrying plate 5 is fixed in a detection cavity 11, the detection cavity 11 is divided into a pressing groove 111 and a jacking groove 112 which are arranged up and down through the arrangement of a dislocation center, downward pressure is provided in the pressing groove 111, and upward jacking force is provided in the jacking groove 112, the pressure and the jacking force generate shearing force on the vertical central section of the concrete block, the concrete block building performance is met, the vertical central section is a stress concentration area, the detection accuracy is improved, the dislocation gap between the pressing groove 111 and the jacking groove 112 is a deformation detection area of the concrete block, the dislocation gap is higher than the height of the concrete block, and the upward deformation of the half section of the concrete block is allowed.
As shown in fig. 1 to 4, the detection chamber 1 is provided with two driving cavities 13 arranged vertically in the horizontal direction, a feed inlet 12 is arranged between the two driving cavities 13, the driving device 2 is connected with the driving cavities 13, the driving device 2 comprises a driving motor 21, a pressing component 23, a top plate 24 and an extrusion block 25, the driving motor 21 is provided with four groups, the driving motor 21 is respectively arranged in a pressing groove 111, a jacking groove 112 and the driving cavities 13, the driving motor 21 is divided into an upper layer, a middle layer and a lower layer along the space direction, the driving cavity 13 is arranged in the middle layer, the output end of the driving motor 21 is provided with a screw-nut pair 22, the screw-nut pair 22 comprises a screw and a nut, the four nuts are respectively in transmission connection with the pressing component 23, the top plate 24 and the extrusion block 25, the top plate 24 is in sliding connection with the jacking groove 112, the extrusion block 25 is in sliding connection with the driving cavities 13, the pressing component 23 is arranged in the jacking groove 112, the pressing component 23 comprises a pressing plate 231, the pressing plate 231 is connected with the pressing groove 111 in a sliding mode, and the nut located on the upper layer is connected with the pressing plate 231 in a transmission mode.
Two horizontal orthogonal driving forces are provided in the driving cavities 13, two adjacent vertical planes of the concrete block are pressurized, so that the strength of the concrete block is detected, a feeding hole 12 is arranged between the two driving cavities 13, the concrete block is fed into the detection cavity through the feeding hole, a driving motor 21 is a main power source and provides torque, the torque is converted into linear displacement through a screw-nut pair 22, so that a top plate 24, a pressing plate 231 and two extrusion blocks 25 are respectively driven to move and extrude the concrete block, so that the performance of the concrete block under different temperature and humidity conditions is detected, stable extrusion force is provided through the driving of the driving motor 21, the pressure of the concrete block and the output torque of the driving motor 21 are in a linear proportion, the detection accuracy performance is improved, and the strength and the brittleness of the concrete block under different temperature and humidity conditions are different, satisfy detection performance through driving motor output torque, driving motor 21 sets up four groups, carry out the quadriversal extrusion to the concrete block, two lateral walls that detect chamber 11 carry on spacingly to the concrete block, the supplementary six extrusion that carries on, clamp plate 231 and suppression groove 111 wall sliding connection, push down the concrete block, it is located clamp plate 231 downside to carry the thing board, clamp plate 231 and concrete block contact segment are unanimous with roof 24 and concrete block contact segment area, adjacent building block interval when horizontal clearance is less than the concrete block building, fix two horizontally arranged's driving motor 21 through drive chamber 13, carry out slide guide through jacking groove 112 to roof 24.
As shown in fig. 2 to 5, the control device 3 includes an axial flow fan 31, an electric field generator 32 and a liquid collection chamber 33, the axial flow fan 31 is disposed in the jacking tank 112, an air outlet of the axial flow fan 31 faces an inner cavity of the liquid collection chamber 33, a liquid outlet is disposed on one side of the liquid collection chamber 33, a reversing valve 34 is disposed on an outer side of the liquid outlet, the reversing valve 34 is a four-way valve, three outlets of the reversing valve 34 are respectively communicated with the object carrying plate 5 and the two squeezing blocks 25 through pipes, outlets of the pipes on the squeezing blocks 25 face two vertical sides of the block to be detected, a flow guide groove 51 on the object carrying plate 5, an outlet of the pipe connected with the object carrying plate 5 faces the flow guide groove 51, a plurality of through holes are disposed on an upper side of the flow guide groove 51, the through holes are communicated with middle air holes of the block to be detected, the electric field generator 32 is disposed in the jacking tank 112, a negative electrode plate is disposed at a negative electrode of the electric field generator 32, a positive electrode plate is disposed at a positive electrode of the electric field generator 32, the electric field generator 32 is respectively communicated with the negative electrode and the positive electrode plate through wires, electric field generator 32, negative plate and positive plate detection circuitry, the negative plate is arranged in guiding gutter 51, is equipped with on the clamp plate 231 and converges groove 2312, converges the groove 2312 downside and is equipped with a plurality of mouths that converge, converge mouth and wait to detect the middle gas pocket intercommunication of building block, detection device 4 includes sensitive ammeter 41, and the positive plate is arranged in converging groove 2312, and sensitive ammeter 41 establishes ties on detection circuitry.
An air source is provided through an axial flow fan 31, water vapor in a liquid collecting chamber 33 is driven to flow, air flow formed by the water vapor is guided out through a reversing valve 34, the reversing valve is a four-way valve, one inlet and three outlets are respectively connected with two extrusion blocks 25 through pipelines and face two adjacent vertical planes of adjacent concrete blocks, each valve port is independently controlled, strength detection can be sequentially carried out on two sides of each concrete block respectively, detection precision is improved, the remaining outlet is communicated with a diversion trench 51 through a pipeline, an electric field is provided through an electric field generator 32, the negative end of the electric field generator 32 is connected with a negative plate, the positive plate is connected with a positive plate, the negative plate is arranged in the diversion trench 51 and is arranged in a confluence trench 2312, a breakdown gap is formed between the negative plate and the positive plate, and when water vapor permeability detection is carried out, permeation is carried out from the outer side of each concrete block inwards, the middle through hole of the concrete block is kept dry in the initial state, the air gap between the negative plate and the positive plate cannot be punctured to generate current, the detection circuit is disconnected, the moisture-containing airflow is continuously blown to one side of the concrete block by the axial flow fan 31, the humidity is increased along with the increase of water vapor, the pressure is increased, the water vapor permeability is increased, the water vapor permeates into the middle through hole of the concrete block, the arc puncture distance of the negative plate is increased, the humidity is increased along with the increase of water vapor, the current generated by the detection circuit is increased along with the increase of water vapor, the current of the detection circuit is detected by the sensitive current meter 41, the permeability of the concrete block is detected according to the detection current under different humidities, after the permeability detection is completed, the outlets of the reversing valves 34 communicated with the two extrusion blocks 25 are closed, the moisture-containing airflow is directly led to the flow guide groove 51 from the reversing valve 34, and the performance is ensured by the axial flow fan 31, the water content of the air flow flowing into the diversion trench 51 is kept stable, the negative plate charges the water vapor, the circuit is conducted to generate current, the current value detected by the sensitive current meter 41 is kept consistent, the driving motor 21 on the upper layer enables the pressing plate 231 to press the concrete block through the screw-nut pair 22, the driving motor 21 on the middle layer enables the two extrusion blocks 25 to move towards the inner side of the concrete block to extrude internally, the lower side of the concrete block is stressed by self gravity and the pressure of the pressing plate 231, the stress is more concentrated than that on the upper layer, the strength is reduced under high-humidity immersion to form a deformation sudden opening, as the resistance of the through hole in the middle of the concrete block is minimum, the hole wall suddenly changes inwards to reduce the local diameter, as the deformation position is on the lower layer of the through hole, the gas at the lower end of the through hole is contracted, the gas at the upper end is expanded, the pressure loss is generated by doing work on the side wall, the upward flow velocity is reduced, and the water vapor density on the upper layer is reduced, the current of the detection circuit is reduced, and the output torque of each driving motor 21 is the limit stress of the concrete block.
Preferably, the regulating device 3 comprises a plurality of corona wires 36, the corona wires 36 are electrically connected with the negative plate, and the upper ends of the corona wires 36 are inserted into air holes of the building blocks to be detected. The corona wire 36 is used for prolonging the arc breakdown length, so that the concrete building block can adapt to concrete building blocks with different specifications.
As shown in fig. 2 to 4 and 6, a rotating groove 2311 is formed in one side of the pressing plate 231, the pressing assembly 23 further comprises a rotating plate 232, the rotating plate 232 is rotatably connected with the rotating groove 2311, the rotating groove 2311 is intermittently communicated with the confluence groove 2312, a drainage groove 2321 is formed in the rotating plate 232, the drainage groove 2321 is communicated with the rotating groove 2311, and one side, far away from the rotating groove 2311, of the rotating plate 232 crosses the center line of the upper side of the building block to be detected.
The pressing plate 231 rotates and guides the rotating plate 232 through the rotating groove 2311, when load detection is carried out on shearing force applied to the concrete blocks from top to bottom, the flow speed of water-containing air flow is kept stable, one end of the rotating plate 232 crosses the center line of the concrete blocks to be detected, when the concrete blocks deform under the action of the shearing force, the top plate 24 drives the concrete blocks at the upper end to move upwards along the staggered gap, so that the center line moves upwards, the rotating plate 232 rotates along the rotating groove 2311, the rotating groove 2311 is communicated with the converging groove 2312, after the negative plates charge water vapor, the water vapor is charged negatively, the water vapor moves upwards under the action of an electric field, after the rotating groove 2311 is communicated with the converging groove 2312, the charged water vapor enters the rotating groove 2311 from the discharging groove 2321, the current circulating in the circuit is reduced, and the pressure caused by the torque output by the driving motor 21 at the lower layer is the limit shearing force of the concrete blocks.
Further, the detecting device 4 further comprises a heating wire 42, and the heating wire 42 is disposed on the lower side of the pressing groove 111 far from the driving chamber 13.
The concrete blocks are heated through the heating wires 42, so that the strength of the concrete blocks at different temperatures is detected, the concrete blocks are heated in a unilateral mode through the arrangement of the heating wires 42, the unilateral heating strength performance of the concrete blocks under the condition of fire is simulated, steam on the concrete blocks can be resolved through the heating wires 42, the concrete blocks are dried again, and repeated experiments are facilitated.
As shown in fig. 3 and 7, the detection chamber 1 is provided with a heat exchange channel 14, the liquid collection chamber 33 is provided with a heat exchange port, the detection device 4 further comprises a heat exchange fin 43, the heat exchange fin 43 is arranged in the heat exchange channel 14, the heating wire 42 exchanges heat with liquid in the liquid collection chamber 33 through the heat exchange fin 43, the regulation and control device 3 further comprises a rotating paddle 35, the rotating paddle 35 is arranged between the negative plate and the corona wire 36, the rotating paddle 35 is intermittently and rotatably connected with the diversion trench 51, and the negative plate is electrically connected with the rotating paddle 35 through a contact.
Install heat transfer sheet 43 through heat transfer passageway 14, heat transfer passageway 14 wall sets up the insulating layer, guarantee heat exchange efficiency, heater strip 42 heats the interior liquid of collecting chamber 33 through heat transfer sheet 43, thereby make humidity rise fast, enlarge the humidity threshold value, improve detection performance, negative plate rotor 35 conducts electricity to corona wire 36, rotor 35 and guiding gutter 51 wall frictional contact, when steam content is lower, can't overcome frictional force and make rotor 35 rotate, when steam content rises, the carrier quantity increases, thereby make the access current increase, improve detection performance, the gaseous kinetic energy increase of moisture, make rotor 35 overcome frictional force and rotate, thereby make the aqueous vapor upwards flow along the concrete block spiral, make the velocity of flow reduce, cushion, prevent that the too fast of velocity of flow from influencing the electrical property of charge.
Preferably, the rotary paddle 35 is electrically connected with the corona wire 36, and the bottom end of the corona wire 36 is slidably connected with the axis of the rotary paddle 35. The corona wire 36 is conducted through the rotary paddle 35, so that the corona wire 36 can generate arc breakdown in a concrete block, movement interference is prevented through contact connection, and rotation smoothness is improved.
The working principle of the invention is as follows: when the water vapor permeability is detected, the water vapor penetrates from the outer side of the concrete block to the inner side, a through hole in the middle of the concrete block is kept dry in an initial state, an air gap cannot be punctured between a negative plate and a positive plate to generate current, a detection circuit is disconnected, water-containing air flow is continuously blown to one side of the concrete block along with the axial flow fan 31, the water vapor permeability is increased along with the increase of the water vapor, the humidity is increased, the pressure is increased, the water vapor permeability is increased, the water vapor penetrates into the through hole in the middle of the concrete block, the electric arc breakdown distance of the negative plate is increased, and the water permeability of the concrete block is detected according to the detection current under different humidities; after the permeability detection is finished, the outlet of a reversing valve 34 communicated with the two extrusion blocks 25 is closed, the water-containing airflow is directly led to the diversion trench 51 from the reversing valve 34, the water content of the airflow flowing into the diversion trench 51 is kept stable through an axial flow fan 31, the negative plate charges water vapor, a circuit is conducted, current is generated, a pressing plate 231 presses the concrete block downwards, a driving motor 21 of the middle layer enables the two extrusion blocks 25 to move towards the inner side of the concrete block and extrude the concrete block inwards, the lower side of the concrete block is stressed by self gravity and the pressure of the pressing plate 231 and is concentrated compared with the upper layer, the strength is reduced under high-humidity immersion, a deformation bursting opening is formed, the resistance of a through hole in the middle of the concrete block is minimum, the hole wall is suddenly changed inwards, the local diameter is reduced, the lower end of the through hole is contracted due to the deformation position at the lower layer of the through hole, the upper end of the through hole is expanded, and works are performed through the through hole wall, pressure loss is generated, the upward flow velocity is reduced, the water vapor density of the upper layer is reduced, the current of a detection circuit is reduced, and the output torque of each driving motor 21 is the limit stress of the concrete building block; when the shearing force applied to the concrete blocks from top to bottom is used for load detection, the flow speed of the water-containing air flow is kept stable, one end of the rotating plate 232 crosses the center line of the concrete blocks to be detected, when the concrete blocks deform under the action of the shearing force, the top plate 24 drives the concrete blocks at the upper end to move upwards along the staggered gap, so that the center line moves upwards, the rotating plate 232 rotates along the rotating groove 2311, so that the rotating groove 2311 is communicated with the confluence groove 2312, after the negative plates charge water vapor, the water vapor is negatively charged, the water vapor moves upwards under the action of an electric field, after the rotating groove 2311 is communicated with the confluence groove 2312, the charged water vapor enters the rotating groove 2311 from the drainage groove 2321, the current flowing in the circuit is reduced, and the pressure caused by the torque output by the driving motor 21 at the lower layer at the moment is the limit shearing force of the concrete blocks.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a concrete block receives test fixture of humiture influence which characterized in that: the test fixture comprises a detection chamber (1), a driving device (2), a regulating and controlling device (3), a detection device (4) and an object carrying plate (5), wherein the detection chamber (1) is arranged on a workbench (6), the detection chamber (1) is connected with the driving device (2), the driving device (2) is communicated with the regulating and controlling device (3) through a pipeline, the regulating and controlling device (3) is fixedly connected with the detection chamber (1), the detection device (4) is connected with the driving device (2), the detection chamber (1) comprises a detection cavity (11), the object carrying plate (5) is arranged in the detection cavity (11), the regulating and controlling device (3) is movably connected with the object carrying plate (5), the object carrying plate (5) divides the detection cavity (11) into a pressing groove (111) and a jacking groove (112), the pressing groove (111) and the jacking groove (112) are respectively arranged on the upper layer and the lower layer of the detection cavity (11), the pressing groove (111) and the jacking groove (112) are arranged in a staggered manner along the vertical center line, the loading plate (5) is positioned on the lower side of the pressing groove (111), and a staggered gap is formed between the lower side of the pressing groove (111) and the upper side of the jacking groove (112);
the detection chamber (1) horizontal direction is equipped with two drive chamber (13) of arranging perpendicularly, two be equipped with feed inlet (12) between drive chamber (13), drive arrangement (2) and drive chamber (13) are connected, and drive arrangement (2) include driving motor (21), push down subassembly (23), roof (24) and extrusion piece (25), driving motor (21) are equipped with four groups, and driving motor (21) are arranged in suppression groove (111), jacking groove (112) and drive chamber (13) respectively, and driving motor (21) divide into along the spatial direction upper, middle, lower three-layer, drive chamber (13) are located the middle level, and driving motor (21) output is equipped with screw-nut pair (22), screw-nut pair (22) includes lead screw and nut, four the nut is connected with push down subassembly (23), roof (24) and extrusion piece (25) transmission respectively, the top plate (24) is connected with the jacking groove (112) in a sliding mode, the extrusion block (25) is connected with the driving cavity (13) in a sliding mode, the pressing assembly (23) is arranged in the jacking groove (112), the pressing assembly (23) comprises a pressing plate (231), the pressing plate (231) is connected with the pressing groove (111) in a sliding mode, and the nut located on the upper layer is in transmission connection with the pressing plate (231);
the adjusting and controlling device (3) comprises an axial flow fan (31), an electric field generator (32) and a liquid collecting chamber (33), the axial flow fan (31) is arranged in the jacking groove (112), an air outlet of the axial flow fan (31) faces towards an inner cavity of the liquid collecting chamber (33), a liquid outlet is arranged on one side of the liquid collecting chamber (33), a reversing valve (34) is arranged on the outer side of the liquid outlet, the reversing valve (34) is a four-way valve, three outlets of the reversing valve (34) are respectively communicated with the object carrying plate (5) and the two extrusion blocks (25) through pipelines, outlets of the pipelines on the extrusion blocks (25) face towards two vertical side edges of the building block to be detected, the upper guide groove (51) of the object carrying plate (5) faces towards the guide groove (51), a plurality of through holes are arranged on the upper side of the guide groove (51), and are communicated with middle air holes of the building block to be detected, electric field generator (32) are arranged in jacking groove (112), and electric field generator (32) negative pole end is equipped with the negative plate, and electric field generator (32) positive pole is equipped with the positive plate, and electric field generator (32) communicate with negative plate and positive plate respectively through the electric wire, electric field generator (32), negative plate and positive plate detection circuitry, the negative plate is arranged in guiding gutter (51), be equipped with on clamp plate (231) and converge groove (2312), converge groove (2312) downside is equipped with a plurality of mouths that converge, converge mouthful and wait to detect the building block in the middle of the gas pocket intercommunication, detection device (4) include sensitive ammeter (41), the positive plate is arranged in and converges groove (2312), sensitive ammeter (41) are established ties on detecting circuit.
2. The test fixture that a concrete block received humiture influence according to claim 1, characterized in that: the regulating device (3) comprises a plurality of corona wires (36), the corona wires (36) are electrically connected with the negative plate, and the upper ends of the corona wires (36) are inserted into air holes of the building blocks to be detected.
3. The test fixture that a concrete block received humiture influence according to claim 2, characterized in that: the pressing plate (231) is provided with a rotating groove (2311) on one side, the pressing assembly (23) further comprises a rotating plate (232), the rotating plate (232) is rotatably connected with the rotating groove (2311), the rotating groove (2311) is intermittently communicated with a confluence groove (2312), a drainage groove (2321) is formed in the rotating plate (232), the drainage groove (2321) is communicated with the rotating groove (2311), and one side, far away from the rotating groove (2311), of the rotating plate (232 crosses the center line of the upper side of the building block to be detected.
4. The test fixture that concrete block received humiture influence according to claim 3, characterized in that: the detection device (4) further comprises a heating wire (42), and the heating wire (42) is arranged on one side, far away from the driving cavity (13), of the lower side of the pressing groove (111).
5. The test fixture that concrete block received humiture influence according to claim 4, characterized in that: be equipped with heat transfer passageway (14) on detection room (1), be equipped with the heat transfer mouth on album liquid chamber (33), detection device (4) still include heat exchanger fin (43), in heat transfer passageway (14) were arranged in heat exchanger fin (43), heater strip (42) are through heat exchanger fin (43) and the liquid heat transfer in album liquid chamber (33), regulation and control device (3) still include commentaries on classics oar (35), change oar (35) and arrange in between negative plate and corona wire (36), change oar (35) and guiding gutter (51) intermittent type formula and rotate the connection, the negative plate passes through the contact and changes oar (35) electricity and connect.
6. The test fixture that concrete block received humiture influence according to claim 5, characterized in that: the rotary paddle (35) is electrically connected with the corona wire (36), and the bottom end of the corona wire (36) is connected with the axis of the rotary paddle (35) in a sliding manner.
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