CN114608962B - Uniaxial compression resistance tester - Google Patents
Uniaxial compression resistance tester Download PDFInfo
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- CN114608962B CN114608962B CN202210512686.7A CN202210512686A CN114608962B CN 114608962 B CN114608962 B CN 114608962B CN 202210512686 A CN202210512686 A CN 202210512686A CN 114608962 B CN114608962 B CN 114608962B
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N3/02—Details
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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
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The application provides unipolar compressive resistance tester belongs to concrete detection technical field, and unipolar compressive resistance tester includes experimental support body subassembly and warm and humid maintenance subassembly. A plurality of concrete samples are vertically placed on the supporting table, the supporting and heat-insulating structure is installed, and the external air conditioner is communicated with the temperature adjusting pipe to adjust the overall temperature of the concrete samples. According to the requirements of the temperature and humidity ladder test, the lifting of the ladder seat is adjusted through the lifting motor, and the extension and retraction of the related clamping hydraulic cylinder are independently controlled, so that the sealing rubber plate is attached to the side wall of the concrete test piece. The outside water supply pipeline provides the steam or the clear water of corresponding temperature, pours into steam or clear water into the recess that sealed flitch surface was seted up into through warm and humid nozzle in, carries out temperature and humidity control to the concrete surface, compares traditional spraying and whole atomizing, but through each ladder temperature humidity independent control of sealed infiltration concrete test piece, can simulate the concrete compressive strength test under the different ladder humiture changes, increases concrete compressive strength's measuring range.
Description
Technical Field
The application relates to the technical field of concrete detection, in particular to a uniaxial compression tester.
Background
Concrete is an essential material in modern construction engineering. The compressive strength is the most important index of concrete, and sampling inspection is needed when the concrete is cast in situ, and the compressive strength is detected in a laboratory when the concrete reaches the age of 28 d. The uniaxial compressive strength of the concrete refers to the ultimate failure strength obtained when a test piece is pressed in one direction, namely the compressive strength obtained when the concrete test piece is placed between an upper pressing plate and a lower pressing plate of a press machine to be pressed until the test piece is crushed. The measurement is generally carried out using a uniaxial compressive strength instrument. Before measuring the compressive strength, the concrete test piece needs to be maintained in a standard way, and should be kept still for one day and night to two days and night in the environment with the temperature of 20 +/-5 ℃, and then is numbered and demoulded. Immediately after the removal of the mold, the mold is placed into a standard curing room with the temperature of 20 +/-2 ℃ and the relative humidity of more than 95 percent for curing, or is cured in a non-flowing Ca (OH) 2 saturated solution with the temperature of 20 +/-2 ℃.
However, the concrete is used in different environments, some foundation concrete is used under the conditions of soaking of bottom groundwater and exposure and dehydration of top sun, some dam body concrete is subjected to continuous infiltration and erosion of water, and some concrete is subjected to the influence of temperature difference on the compressive strength of the concrete in hot and cold areas. The existing concrete is generally subjected to standard maintenance integrally, and the concrete compressive strength under the condition of humidity step change and temperature change cannot be subjected to accurate and effective test analysis simulation.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. For this, this application provides unipolar compressive resistance tester, carries out axial ladder control to the concrete sample through a plurality of warm and humid controlling means, simulates compressive strength under the multiple service environment of reality concrete.
The application is realized as follows:
the application provides a unipolar compressive tester includes experimental support body subassembly and warm and humid maintenance subassembly.
The test rack body component comprises a skirt support, a rail support frame, a supporting table and a temperature adjusting pipe, wherein the lower end of the rail support is arranged in the skirt support, the bottom of the supporting table is lapped on the top of the skirt support, the supporting table is sleeved on the lower end of the rail support, the bottom of the supporting table is lapped on the top of the rail support, the temperature adjusting pipe is hung on the supporting table, the temperature adjusting pipe is communicated with an external air conditioning pipeline, the temperature and humidity maintenance component comprises a step seat, a lifting screw rod, a lifting motor, a clamping arm, a clamping hydraulic cylinder, a sealing rubber plate and a temperature and humidity nozzle, the step seat uniformly slides on the surface of the rail support, the two ends of the lifting screw rod rotate between the supporting table and the supporting table, the step seat is driven on the surface of the lifting screw rod, the body of the lifting motor is uniformly arranged at the bottom of the supporting table, the output end of the lifting motor is driven at one end of the lifting screw rod, the clamping arm is symmetrically and rotatably connected to the stepped seat, the clamping hydraulic cylinder body is symmetrically and rotatably arranged on the stepped seat, one end of a piston rod of the clamping hydraulic cylinder is rotatably connected to the clamping arm, the sealing rubber plate is arranged on the clamping arm, the warm and wet nozzles are uniformly arranged on the clamping arm, and the warm and wet nozzles are respectively communicated with an internal water supply pipeline and an external water supply pipeline of the sealing rubber plate.
In an embodiment of this application, prop rail frame lower extreme and be provided with the corner seat, the brace table overlap joint in the corner seat.
In an embodiment of the application, a supporting platform and a heat preservation shell plate are arranged between the supporting platform and the supporting platform.
In an embodiment of this application, be provided with the reposition of redundant personnel seat on the pipe adjusts the temperature, the reposition of redundant personnel seat is fixed in prop the bench, the reposition of redundant personnel seat communicates in outside air conditioner pipeline.
In an embodiment of the present application, a guide wheel is rotatably disposed on the step seat, and the guide wheel slides on the surface of the supporting rail frame.
In one embodiment of the present application, a lead screw nut is disposed on the step seat, and the lead screw nut is driven on the surface of the lifting lead screw.
In an embodiment of the present application, first rotation bases are symmetrically disposed on the step base, and the clamping arms are rotatably connected to the first rotation bases.
In an embodiment of the present application, the step seat is symmetrically provided with a second swivel base, and the clamping hydraulic cylinder body is rotatably connected to the second swivel base.
In an embodiment of the application, the surface of the sealing rubber plate is uniformly provided with infiltration grooves, the warm and humid nozzles are communicated with the infiltration grooves, and the infiltration grooves are communicated with one another to form a communication groove.
In one embodiment of the present application, a ring plate is disposed on the clamping arm, and the wet and warm nozzles are disposed on the ring plate.
In one embodiment of the present application, the uniaxial compression tester further comprises a rotary compression assembly and a compression test assembly.
Gyration resistance to compression subassembly includes anti pressure disk, resistance to compression ball, rotating electrical machines, reposition of redundant personnel nozzle and first rotary joint, anti pressure disk lower extreme evenly slide run through in prop up supporting bench, resistance to compression ball evenly set up in prop up supporting bench, resistance to compression ball top laminate in resistance to compression disk bottom, the rotating electrical machines fuselage hang in prop up supporting bench bottom, the rotating electrical machines output mesh in resistance to compression disk surface, reposition of redundant personnel nozzle set up in the resistance to compression disk, first rotary joint stiff end evenly set up in prop up supporting bench bottom, first rotary joint stiff end communicates in external water supply pipeline, reposition of redundant personnel nozzle communicate respectively in resistance to compression disk top with first rotary joint tip, the pressurization test subassembly includes pressurized hydraulic cylinder, hangs dish, adds the pressure disk, adds the ball, rotating electrical machines, Divide liquid nozzle and second rotary joint, the pressurized hydraulic cylinder body evenly set up in prop the bench, hang the dish hang in pressurized hydraulic cylinder piston rod one end, the pressurization dish upper end slide run through in hang in the dish, the pressurization ball evenly set up in hang in the dish, pressurization ball bottom laminate in pressurization dish surface, the rotating electrical machines fuselage set up in hang on the dish, the rotating electrical machines output end transmission in pressurization dish surface, divide liquid nozzle set up in the pressurization dish, the second rotary joint stiff end set up in hang a set top, the second rotary joint stiff end communicates in external water supply pipeline, divide liquid nozzle distribute communicate in pressurization dish bottom with the second rotary joint rotation end.
In an embodiment of the application, be provided with the resistance to compression ring gear on the resistance to compression dish, the rotating electrical machines output is provided with the resistance to compression gear, the resistance to compression gear mesh in the resistance to compression ring gear.
In an embodiment of the present application, a pressurizing gear ring is provided on the pressurizing plate, and a pressurizing gear is provided at the output end of the rotating electrical machine, and the pressurizing gear is engaged with the pressurizing gear ring.
In an embodiment of this application, be provided with first circular rail on the anti pressure disk, even the rotation is provided with first spacing wheel on the brace table, first circular rail slide in between the first spacing wheel.
In an embodiment of this application, be provided with the second circular rail on the pressure disk, it is provided with the spacing wheel of second to hang even the rotation on the dish, the second circular rail slide in between the spacing wheel of second.
In an embodiment of this application, resistance to compression dish top with add the pressure disk bottom and all seted up humidification groove, the reposition of redundant personnel nozzle with divide the liquid nozzle all communicate in add the humidification groove, it evenly is provided with on the dish and hangs the pole to hang, hang the pole slide run through in prop on the platform.
The beneficial effect of this application is: this application obtains unipolar compressive resistance tester through above-mentioned design, during the use, with a plurality of concrete test pieces vertical put into the brace table on, the installation supports and insulation construction, carries out whole temperature regulation to concrete test piece through outside air conditioner intercommunication temperature adjusting pipe. According to the requirements of the temperature and humidity ladder test, the lifting of the ladder seat is adjusted through the lifting motor, and the extension and retraction of the related clamping hydraulic cylinder are independently controlled, so that the sealing rubber plate is attached to the side wall of the concrete test piece. The outside water supply pipeline provides the steam or the clear water of corresponding temperature, pours into steam or clear water into the recess that sealed flitch surface was seted up into through warm and humid nozzle in, carries out temperature and humidity control to the concrete surface, compares traditional spraying and whole atomizing, but through each ladder temperature humidity independent control of sealed infiltration concrete test piece, can simulate the concrete compressive strength test under the different ladder humiture changes, increases concrete compressive strength's measuring range.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic perspective view of a uniaxial compression tester provided in an embodiment of the present application;
fig. 2 is a schematic perspective view of a test frame assembly according to an embodiment of the present disclosure;
FIG. 3 is a schematic perspective view of a warm and humid curing assembly according to an embodiment of the present disclosure;
FIG. 4 is a partial perspective view of a warm and humid curing assembly according to an embodiment of the present disclosure;
FIG. 5 is a schematic perspective view of a rotary compression resistant assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic perspective view of a compression testing assembly according to an embodiment of the present disclosure.
In the figure: 100-a test rack assembly; 110-skirt; 120-rail bracing; 121-corner seat; 130-a support table; 131-a top rod; 132-insulating shell plate; 133-a first spacing wheel; 140-a shoring table; 150-a temperature-regulating pipe; 151-a shunt seat; 300-maintaining the components in a warm and wet manner; 310-step seat; 311-a guide wheel; 312-lead screw nut; 313-a first transposition; 314-second transposition; 320-lifting lead screw; 330-a lifting motor; 340-a gripper arm; 341-ring plate; 350-clamping hydraulic cylinder; 360-sealing rubber plate; 361-infiltration tank; 362-a communication channel; 370-wet and warm nozzle; 500-a rotary compression resistant assembly; 510-resistance disc; 511-compression resistant gear ring; 512-a first circular track; 513-a humidifying tank; 520-pressure resistant balls; 530-a rotary electric machine; 531-compression resistant gear; 540-a split flow nozzle; 550-a first swivel joint; 700-pressure test assembly; 710-a pressurized hydraulic cylinder; 720-hanging disc; 721-a second limiting wheel; 722-a suspension bar; 730-pressure plate; 731-pressing gear ring; 732-a second endless track; 740-pressure balls; 750-a rotating electrical machine; 751-a pressure gear; 760-liquid separation nozzles; 770 — a second swivel.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Examples
As shown in fig. 1 to 6, the uniaxial compression resistance tester according to the embodiment of the present application includes a test frame assembly 100, a warm and wet curing assembly 300, a rotary compression resistance assembly 500, and a compression test assembly 700. The warm and wet curing assemblies 300 are uniformly installed in the test frame assembly 100, the rotary compression-resistant assemblies 500 are uniformly installed in the lower end of the test frame assembly 100, and the compression test assemblies 700 are uniformly installed in the upper end of the test frame assembly 100. The test frame body assembly 100 supports a concrete test piece and integrally adjusts the temperature; the temperature and humidity maintenance component 300 is used for carrying out local stepped humidity and temperature regulation on the concrete test piece; the rotary compression-resistant assembly 500 supports the bottom of the concrete sample and adjusts the temperature and humidity; the compression test assembly 700 is matched with the rotary compression-resistant assembly 500 to perform compression strength test on the concrete sample, and the compression test assembly 700 performs temperature and humidity adjustment on the top of the concrete sample.
As shown in fig. 2-6, the concrete is used in different environments, some of the foundation concrete is used under the conditions of soaking of bottom groundwater and exposure to the sun at the top for water loss, some of the dam concrete is subjected to continuous infiltration and erosion of water, and some of the concrete in hot and cold regions is subjected to the influence of temperature difference on the compressive strength of the concrete. The existing concrete is generally subjected to standard maintenance integrally, and the concrete compressive strength under the condition of humidity step change and temperature change cannot be subjected to accurate and effective test analysis and measurement.
The test rack assembly 100 includes a skirt 110, a support rail 120, a support table 130, a support ceiling 140, and a temperature-regulating tube 150. The lower end of the rail supporting frame 120 is arranged in the skirt 110, and the rail supporting frame 120 is screwed with the skirt 110. The bottom of the support platform 130 is lapped on the top of the skirt 110, and the support platform 130 is screwed with the skirt 110. The supporting table 130 is sleeved at the lower end of the rail supporting frame 120, the lower end of the rail supporting frame 120 is provided with an angle seat 121, the angle seat 121 is in threaded connection with the rail supporting frame 120, and the supporting table 130 is lapped on the angle seat 121 to increase the supporting area of the supporting table 130. The bottom of the top supporting platform 140 is connected to the top of the rail supporting frame 120, and the top supporting platform 140 and the top of the rail supporting frame 120 are connected. The temperature adjusting pipe 150 is hung on the supporting platform 140, a shunt seat 151 is arranged on the temperature adjusting pipe 150, the shunt seat 151 is welded with the temperature adjusting pipe 150, the shunt seat 151 is fixed on the supporting platform 140, and the shunt seat 151 is in threaded connection with the supporting platform 140. The temperature adjusting pipe 150 is connected to an external air conditioning pipeline, and the flow dividing base 151 is connected to the external air conditioning pipeline. An ejector rod 131 and a heat preservation shell plate 132 are arranged between the support table 130 and the support table 140, so that the support strength and the heat preservation effect of the test device are improved.
The warm and wet curing assembly 300 includes a stepped seat 310, a lifting screw 320, a lifting motor 330, a clamping arm 340, a clamping hydraulic cylinder 350, a sealing rubber plate 360 and a warm and wet nozzle 370. The step seat 310 slides uniformly on the surface of the supporting rail frame 120, the step seat 310 is provided with a guide wheel 311 in a rotating manner, a bearing is arranged on the step seat 310, and one end of the guide wheel 311 is fixed in the bearing. The guide wheel 311 slides on the surface of the supporting rail frame 120. The two ends of the lifting screw 320 rotate between the supporting platform 130 and the supporting top platform 140, the specific supporting platform 130 and the supporting top platform 140 are provided with bearing seats, and the two ends of the lifting screw 320 are fixed in the bearing seats. The step seat 310 is driven on the surface of the lifting screw 320, the step seat 310 is provided with a screw nut 312, the screw nut 312 is in threaded connection with the step seat 310, and the screw nut 312 is driven on the surface of the lifting screw 320. The body of the lifting motor 330 is uniformly arranged at the bottom of the supporting platform 130, and the lifting motor 330 is in threaded connection with the supporting platform 130. The output end of the lifting motor 330 is driven at one end of the lifting screw 320, and the lifting motor 330 is coupled with the lifting screw 320.
The clamping arms 340 are symmetrically and rotatably connected to the step seat 310, the step seat 310 is symmetrically provided with first rotating seats 313, the first rotating seats 313 are welded to the step seat 310, the clamping arms 340 are rotatably connected to the first rotating seats 313, and the clamping arms 340 are in pin connection with the first rotating seats 313. The cylinder body of the clamping hydraulic cylinder 350 symmetrically rotates on the step seat 310, the second rotary seat 314 is symmetrically arranged on the step seat 310, the second rotary seat 314 is welded with the step seat 310, the cylinder body of the clamping hydraulic cylinder 350 is rotationally connected to the second rotary seat 314, and the clamping hydraulic cylinder 350 is connected with the second rotary seat 314 through a pin shaft. One end of the piston rod of the clamping hydraulic cylinder 350 is rotatably connected to the clamping arm 340, and the clamping hydraulic cylinder 350 is connected with the clamping arm 340 through a pin shaft. The sealing rubber plate 360 is disposed on the clamping arm 340, and the sealing rubber plate 360 is screwed with the clamping arm 340. The warm and wet nozzles 370 are uniformly arranged on the clamping arm 340, the clamping arm 340 is provided with a ring plate 341, the ring plate 341 is welded with the clamping arm 340, the warm and wet nozzles 370 are arranged on the ring plate 341, and the warm and wet nozzles 370 are in threaded connection with the ring plate 341.
The warm and humid spray nozzles 370 are respectively communicated with the inside of the sealing rubber plate 360 and an external water supply pipeline, the surface of the sealing rubber plate 360 is uniformly provided with infiltration grooves 361, the warm and humid spray nozzles 370 are communicated with the infiltration grooves 361, and the infiltration grooves 361 are communicated with one another to form a communication groove 362.
A plurality of concrete samples are vertically placed on the support table 130, the ejector rods 131 and the heat preservation shell plates 132 are installed to support and preserve heat of a test area, and the whole temperature of the concrete samples is adjusted through the external air conditioner communicated temperature adjusting pipes 150. According to the requirements of the temperature and humidity ladder test, the lifting of the ladder seat 310 is adjusted through the lifting motor 330, and the extension and retraction of the related clamping hydraulic cylinders 350 are independently controlled, so that the sealing rubber plates 360 are attached to the side wall of the concrete test piece. The outside water supply pipeline provides the steam or the clear water of corresponding temperature, pours into steam or clear water into the recess that 360 surfaces of sealed offset plate were seted up into through warm and humid nozzle 370, carries out temperature and humidity control to the concrete surface, compares traditional spraying and whole atomizing, but through each ladder temperature humidity independent control of sealed infiltration concrete test piece, can simulate the concrete compressive strength test under the different ladder temperature and humidity changes, increases concrete compressive strength's measuring range.
The rotary compression resistant assembly 500 includes a compression resistant disc 510, a compression resistant ball 520, a rotary motor 530, a flow splitting nozzle 540, and a first rotary joint 550. The lower end of the pressure-resistant disc 510 uniformly slides and penetrates through the supporting table 130, a groove is formed in the surface of the supporting table 130, and the pressure-resistant disc 510 slides and penetrates through the groove. The compression-resistant balls 520 are uniformly arranged in the supporting table 130, the specific compression-resistant balls 520 are arranged in the grooves, and the tops of the compression-resistant balls 520 are attached to the bottoms of the compression-resistant discs 510. The anti-pressure disk 510 is provided with a first ring rail 512, the first ring rail 512 is in threaded connection with the anti-pressure disk 510, the supporting table 130 is uniformly provided with a first limiting wheel 133 in a rotating manner, the specific supporting table 130 is provided with a bearing, one end of the first limiting wheel 133 is fixed in the bearing, the first ring rail 512 of the first limiting wheel 133 slides between the first limiting wheels 133, and the anti-pressure disk 510 is supported and rotated through the structure. The body of the rotary motor 530 is suspended at the bottom of the support table 130, and the rotary motor 530 is screwed with the support table 130.
The output end of the rotary motor 530 is meshed with the surface of the pressure-resistant disc 510, the pressure-resistant disc 510 is provided with a pressure-resistant gear ring 511, the pressure-resistant gear ring 511 is in threaded connection with the pressure-resistant disc 510, the output end of the rotary motor 530 is provided with a pressure-resistant gear 531, the pressure-resistant gear 531 is in key connection with the rotary motor 530, and the pressure-resistant gear 531 is meshed with the pressure-resistant gear ring 511. The flow distribution nozzle 540 is disposed within the pressure resistant disk 510, and the flow distribution nozzle 540 is threadedly coupled to the pressure resistant disk 510. The fixed end of the first rotary joint 550 is uniformly arranged at the bottom of the supporting platform 130, and the first rotary joint 550 is screwed with the supporting platform 130. First rotary joint 550 stiff end communicates in the external water supply pipeline, and reposition of redundant personnel nozzle 540 communicates respectively in resistance to compression dish 510 top and first rotary joint 550 rotation end, and humidification groove 513 has all been seted up to resistance to compression dish 510 top and pressurization dish 730 bottom, and reposition of redundant personnel nozzle 540 and divide liquid nozzle 760 all communicate in humidification groove 513.
The pressurization test assembly 700 includes a pressurization cylinder 710, a suspension disk 720, a pressurization disk 730, a pressurization ball 740, a rotary motor 750, a liquid separation nozzle 760, and a second rotary joint 770. The body of the pressurized hydraulic cylinder 710 is uniformly arranged on the supporting table 140, and the pressurized hydraulic cylinder 710 is screwed with the supporting table 140. The suspension plate 720 is suspended from one end of the piston rod of the pressurized hydraulic cylinder 710, and the suspension plate 720 is screwed to the pressurized hydraulic cylinder 710. The upper end of the pressurizing disc 730 penetrates through the suspension disc 720 in a sliding manner, a groove is formed in the specific suspension disc 720, and the pressurizing disc 730 penetrates through the groove in a sliding manner. The pressing balls 740 are uniformly arranged in the suspension disk 720, the specific pressing balls 740 are arranged in the grooves, and the bottoms of the pressing balls 740 are attached to the surface of the pressing disk 730. The pressurizing plate 730 is provided with a second ring rail 732, and the second ring rail 732 is screwed with the pressurizing plate 730. The hanging disc 720 is uniformly rotatably provided with a second limiting wheel 721, a bearing is arranged on the hanging disc 720, and one end of the second limiting wheel 721 is fixed in the bearing. The second ring rail 732 slides between the second limiting wheels 721 to realize the pressurization and support of the pressurization disc 730 on the top of the concrete sample.
Wherein, the body of the rotating motor 750 is arranged on the suspension disk 720, and the rotating motor 750 is screwed with the suspension disk 720. The output end of the rotary motor 750 is transmitted on the surface of the pressure plate 730, the pressure plate 730 is provided with a pressure gear ring 731, the pressure gear ring 731 is in threaded connection with the pressure plate 730, the output end of the rotary motor 750 is provided with a pressure gear 751, the rotary motor 750 is in key connection with the pressure gear 751, and the pressure gear 751 is meshed with the pressure gear ring 731. The liquid distribution nozzle 760 is provided in the pressurizing plate 730, and the liquid distribution nozzle 760 is screwed to the pressurizing plate 730. The fixed end of the second rotary joint 770 is arranged on the top of the hanging disc 720, the second rotary joint 770 is in threaded connection with the hanging disc 720, the fixed end of the second rotary joint 770 is communicated with an external water supply pipeline, and the liquid separation nozzle 760 is distributed and communicated with the bottom of the pressurizing disc 730 and the rotary end of the second rotary joint 770. The hanging rods 722 are uniformly arranged on the hanging plate 720, the hanging rods 722 are in threaded connection with the hanging plate 720, and the hanging rods 722 penetrate through the supporting top platform 140 in a sliding mode, so that the supporting precision and strength of the pressurizing plate 730 are improved.
The rotation of the anti-pressure plate 510 is controlled by the rotary motor 530, the rotation of the pressure plate 730 is controlled by the rotary motor 750, and the whole rotation of the concrete test piece is controlled together. The clamping hydraulic cylinder 350 is matched to control the opening and closing of the sealing rubber plate 360, and the temperature and humidity of the side surface of the concrete sample are controlled to simulate the single-point water vapor permeation of the side surface of the concrete under the actual temperature use environment. The lifting of the sealing rubber plate 360 is controlled by matching with the lifting motor 330, and the stepped water vapor permeation of the concrete side surface under the actual temperature use environment is simulated. The top and bottom water vapor input in the rotation process of the concrete test piece is realized through the first rotary joint 550 and the second rotary joint 770, and the steam or clean water with corresponding external temperature is injected into the humidifying tank 513 through the diversion nozzle 540 and the diversion nozzle 760 to permeate the water vapor at the top and bottom of the concrete test piece. Through the cooperation of the structure, the temperature and humidity control of the whole and local concrete sample is realized, the traditional spraying and integral atomization are compared, the temperature and humidity of each step of the sealed and infiltrated concrete sample can be independently controlled, the concrete compressive strength test under the change of different step temperatures and humidity can be simulated, and the measurement range of the concrete compressive strength is enlarged.
As shown in fig. 2-6, the axial compressive creep rupture test under different stress levels is studied and analyzed, the relationship between the stress level and the creep rupture time under the axial compressive condition of the concrete can be obtained, the service life of the concrete member under the compressive condition can be estimated, and the load-bearing stress level of the concrete member during normal operation can be determined. However, the existing concrete uniaxial compression device can only apply one action stress to a concrete sample once, the creep failure test period is long, and the concrete creep failure test efficiency is low.
The bottoms of a plurality of concrete test pieces are vertically placed on the pressure-resistant plate 510, the pressure of the pressure plate 730 on the tops of the concrete test pieces is independently controlled through the pressure hydraulic cylinder 710, the temperature-adjusting pipe 150 is matched for synchronous temperature adjustment of the plurality of concrete test pieces, steam or clean water is injected into the side wall of the concrete test piece through the temperature-humidity nozzle 370, steam or clean water is injected into the bottoms of the concrete test pieces through the flow dividing nozzle 540, and steam or clean water is injected into the tops of the concrete test pieces through the flow dividing nozzle 760. The step temperature and humidity control is synchronously carried out on different concrete samples, the independent pressurization control is carried out on the different concrete samples at one time, the time of the concrete samples is saved, the creep failure test period is short, and the concrete creep failure test efficiency is high.
Specifically, the working principle of the uniaxial compression tester is as follows: a plurality of concrete samples are vertically placed on the support table 130, the ejector rods 131 and the heat preservation shell plates 132 are installed to support and preserve heat of a test area, and the whole temperature of the concrete samples is adjusted through the external air conditioner communicated temperature adjusting pipes 150. According to the requirements of the temperature and humidity ladder test, the lifting of the ladder seat 310 is adjusted through the lifting motor 330, and the extension and retraction of the related clamping hydraulic cylinders 350 are independently controlled, so that the sealing rubber plates 360 are attached to the side wall of the concrete test piece. The outside water supply pipeline provides the steam or the clear water of corresponding temperature, pours into steam or clear water into the recess that 360 surfaces of sealed offset plate were seted up into through warm and humid nozzle 370, carries out temperature and humidity control to the concrete surface, compares traditional spraying and whole atomizing, but through each ladder temperature humidity independent control of sealed infiltration concrete test piece, can simulate the concrete compressive strength test under the different ladder temperature and humidity changes, increases concrete compressive strength's measuring range.
Further, the rotation of the anti-pressure plate 510 is controlled by the rotating motor 530, the rotation of the pressure plate 730 is controlled by the rotating motor 750, and the whole rotation of the concrete sample is controlled together. The clamping hydraulic cylinder 350 is matched to control the opening and closing of the sealing rubber plate 360, and the temperature and humidity of the side surface of the concrete sample are controlled to simulate the single-point water vapor permeation of the side surface of the concrete under the actual temperature use environment. The lifting of the sealing rubber plate 360 is controlled by matching with the lifting motor 330, and the stepped water vapor permeation of the concrete side surface under the actual temperature use environment is simulated. The top and bottom water vapor input in the rotation process of the concrete test piece is realized through the first rotary joint 550 and the second rotary joint 770, and the steam or clean water with corresponding external temperature is injected into the humidifying tank 513 through the diversion nozzle 540 and the diversion nozzle 760 to permeate the water vapor at the top and bottom of the concrete test piece. Through the cooperation of the structure, the temperature and humidity control of the whole and local concrete sample is realized, the traditional spraying and integral atomization are compared, the temperature and humidity of each step of the sealed and infiltrated concrete sample can be independently controlled, the concrete compressive strength test under the change of different step temperatures and humidity can be simulated, and the measurement range of the concrete compressive strength is enlarged.
In addition, the bottoms of a plurality of concrete test pieces are vertically placed on the pressure-resistant plate 510, the pressure of the pressure-applying plate 730 on the tops of the concrete test pieces is independently controlled through the pressure-applying hydraulic cylinder 710, the steam or the clear water is injected into the side wall of the concrete test piece through the cooperation of the temperature-adjusting pipe 150 and the synchronous temperature adjustment of the plurality of concrete test pieces, the steam or the clear water is injected into the bottom of the concrete test piece through the cooperation of the temperature-humidity nozzle 370, and the steam or the clear water is injected into the top of the concrete test piece through the cooperation of the liquid-dividing nozzle 760. The step temperature and humidity control is synchronously carried out on different concrete samples, the independent pressurization control is carried out on the different concrete samples at one time, the time of the concrete samples is saved, the creep failure test period is short, and the concrete creep failure test efficiency is high.
It should be noted that the specific model specifications of the lifting motor 330, the clamping hydraulic cylinder 350, the rotating motor 530, the pressurizing hydraulic cylinder 710 and the rotating motor 750 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply and the principle of the elevation motor 330, the gripping hydraulic cylinder 350, the rotation motor 530, the pressurizing hydraulic cylinder 710, and the rotation motor 750 will be apparent to those skilled in the art and will not be described in detail herein.
The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (10)
1. The uniaxial compression resistance tester is characterized by comprising
The test rack body assembly (100) comprises a skirt base (110), a rail support frame (120), a support table (130), a supporting table (140) and a temperature adjusting pipe (150), wherein the lower end of the rail support frame (120) is arranged in the skirt base (110), the bottom of the support table (130) is lapped on the top of the skirt base (110), the support table (130) is sleeved on the lower end of the rail support frame (120), the bottom of the supporting table (140) is lapped on the top of the rail support frame (120), the temperature adjusting pipe (150) is hung on the supporting table (140), and the temperature adjusting pipe (150) is communicated with an external air conditioning pipeline;
the warm and wet maintenance assembly (300) comprises a step seat (310), a lifting screw rod (320), a lifting motor (330), a clamping arm (340), a clamping hydraulic cylinder (350), a sealing rubber plate (360) and a warm and wet nozzle (370), wherein the step seat (310) uniformly slides on the surface of the rail support frame (120), two ends of the lifting screw rod (320) rotate between the support platform (130) and the supporting platform (140), the step seat (310) is transmitted on the surface of the lifting screw rod (320), the body of the lifting motor (330) is uniformly arranged at the bottom of the support platform (130), the output end of the lifting motor (330) is transmitted at one end of the lifting screw rod (320), the clamping arm (340) is symmetrically and rotatably connected onto the step seat (310), the body of the clamping hydraulic cylinder (350) symmetrically rotates on the step seat (310), one end of a piston rod of the clamping hydraulic cylinder (350) is rotatably connected to the clamping arm (340), the sealing rubber plate (360) is arranged on the clamping arm (340), the warm and wet nozzles (370) are uniformly arranged on the clamping arm (340), and the warm and wet nozzles (370) are respectively communicated with an internal water supply pipeline and an external water supply pipeline of the sealing rubber plate (360);
gyration resistance to compression subassembly (500), gyration resistance to compression subassembly (500) includes resistance to compression dish (510), resistance to compression ball (520), rotating electrical machines (530), reposition of redundant personnel nozzle (540) and first rotary joint (550), resistance to compression dish (510) lower extreme evenly slides and runs through in supporting bench (130), resistance to compression ball (520) evenly set up in supporting bench (130), resistance to compression ball (520) top is laminated in resistance to compression dish (510) bottom, rotating electrical machines (530) fuselage hangs in supporting bench (130) bottom, rotating electrical machines (530) output end mesh in resistance to compression dish (510) surface, reposition of redundant personnel nozzle (540) set up in resistance to compression dish (510), first rotary joint (550) stiff end evenly set up in supporting bench (130) bottom, first rotary joint (550) stiff end communicates in outside water supply pipe, the flow dividing nozzle (540) is respectively communicated with the top of the pressure resisting disc (510) and the rotating end of the first rotating joint (550);
the pressurization test assembly (700), the pressurization test assembly (700) includes a pressurization hydraulic cylinder (710), a suspension disc (720), a pressurization disc (730), a pressurization ball (740), a rotating motor (750), a liquid separation nozzle (760) and a second rotating joint (770), a cylinder body of the pressurization hydraulic cylinder (710) is uniformly arranged on the supporting table (140), the suspension disc (720) is suspended at one end of a piston rod of the pressurization hydraulic cylinder (710), the upper end of the pressurization disc (730) is slidably penetrated in the suspension disc (720), the pressurization ball (740) is uniformly arranged in the suspension disc (720), the bottom of the pressurization ball (740) is attached to the surface of the pressurization disc (730), a body of the rotating motor (750) is arranged on the suspension disc (720), and an output end of the rotating motor (750) is driven to the surface of the pressurization disc (730), the liquid separating nozzle (760) is arranged in the pressurizing disc (730), the fixed end of the second rotary joint (770) is arranged at the top of the suspension disc (720), the fixed end of the second rotary joint (770) is communicated with an external water supply pipeline, and the liquid separating nozzle (760) is communicated with the bottom of the pressurizing disc (730) and the rotary end of the second rotary joint (770) in a distributed manner.
2. The uniaxial compression tester according to claim 1, wherein the lower end of the rail supporting frame (120) is provided with an angle seat (121), and the supporting table (130) is lapped on the angle seat (121).
3. The uniaxial compressive stress tester according to claim 1, wherein a ram (131) and a heat-insulating shell plate (132) are provided between the supporting table (130) and the supporting table (140).
4. The uniaxial compression tester according to claim 1, wherein the temperature adjusting pipe (150) is provided with a shunting seat (151), the shunting seat (151) is fixed on the supporting table (140), and the shunting seat (151) is communicated with an external air conditioning pipeline.
5. The uniaxial compressive stress tester as claimed in claim 1, wherein the step seat (310) is rotatably provided with a guide wheel (311), and the guide wheel (311) slides on the surface of the rail supporting frame (120).
6. The uniaxial compression tester according to claim 1, wherein the step seat (310) is provided with a lead screw nut (312), and the lead screw nut (312) is driven on the surface of the lifting lead screw (320).
7. The uniaxial compressive stress tester as recited in claim 1, wherein the step holder (310) is symmetrically provided with a first rotary seat (313), and the holding arm (340) is rotatably connected to the first rotary seat (313).
8. The uniaxial compressive stress tester as recited in claim 1, wherein a second swivel mount (314) is symmetrically arranged on the stepped seat (310), and a body of the clamping hydraulic cylinder (350) is rotatably connected to the second swivel mount (314).
9. The uniaxial compression tester according to claim 1, wherein the surface of the rubber sealing plate (360) is uniformly provided with soaking grooves (361), the warm and wet nozzles (370) are communicated with the soaking grooves (361), and the soaking grooves (361) are communicated with each other to form communicating grooves (362).
10. The uniaxial compression tester according to claim 1, wherein a ring plate (341) is disposed on the holding arm (340), and the warm and wet nozzle (370) is disposed on the ring plate (341).
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| CN115791408B (en) * | 2023-02-07 | 2023-04-11 | 山东交通职业学院 | Cement concrete column resistance to compression survey device |
| CN117491178B (en) * | 2024-01-02 | 2024-03-19 | 资阳建工建筑有限公司 | Concrete performance detection device with multiple environment simulation function |
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