CN204286971U - The charger of a kind of concrete sample corrosion test under effect of stress - Google Patents
The charger of a kind of concrete sample corrosion test under effect of stress Download PDFInfo
- Publication number
- CN204286971U CN204286971U CN201420797285.1U CN201420797285U CN204286971U CN 204286971 U CN204286971 U CN 204286971U CN 201420797285 U CN201420797285 U CN 201420797285U CN 204286971 U CN204286971 U CN 204286971U
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- lever
- afterburning
- lifter
- fixed
- afterburning lever
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Abstract
The utility model discloses the charger of a kind of concrete sample corrosion test under effect of stress, comprise the container of frame, load maintainer, force transmission mechanism, specimen holder and splendid attire corrosive liquid, force transmission mechanism is connected with specimen holder by connecting link.Specimen holder comprises pressue device and regulating device, and regulating device comprises control circuit, servomotor and lifter; Lifter is by driven by servomotor, and servomotor is connected with control circuit; The connecting link described in one termination of pressue device, another termination lifter.Control circuit of the present utility model is monitored load maintainer, automatically regulates the height of lifter according to the state of load maintainer, can carry out auto-compensation to concrete sample stress relaxation, keeps concrete sample stress constant.
Description
[technical field]
The utility model relates to the charger of concrete erosion test, particularly relates to the charger of a kind of concrete sample corrosion test under effect of stress.
[background technology]
Bearing load is concrete as the main mission of structure function material and inherent characteristic, the existence of load can cause concrete Creep and relaxation, cause concrete to destroy before not reaching its due ultimate bearing capacity, affects the permanent performance of xoncrete structure and security.Moreover, because the permanance understanding of early stage people to xoncrete structure is unclear, pay attention to not, rugged surroundings residing for xoncrete structure have an impact to every mechanical property of xoncrete structure, form the environmental corrosion to xoncrete structure, and the size of load and form can affect the degradation speed of environmental corrosion to xoncrete structure further.Adequately analyze the mechanical property of xoncrete structure after stress and context synchronization corrode, the impact of coupling on mechanical performance of concrete understanding stress and environmental corrosion is most important, need use corresponding corrosion device.At present, people devise the device of various stress corrosion, on market, seen stress corrosion device have employed spring structure, machine driven system, hydraulic control system or counterweight and applies pulling force or pressure to test specimen, is recorded the relevant parameters of concrete component in lasting loading procedure by instrument.But these devices do not relate to the coupling with environmental corrosion mostly, and there is following shortcoming:
Spring or machine driven system are through stretching for a long time or compression, and there will be stress relaxation, load reduces gradually, affects loading accuracy, brings larger difficulty to the analysis of test findings.
The deformation of member caused by concrete creep, increases the stress relaxation of the charger of spring or machine driven system further.
The stress corrosion device of hydraulic system needs to design corresponding control system, and design is complicated, cost is high.
The patent No. be 200810066321.6 patent of invention disclose the loading equipemtn of a kind of concrete sample corrosion test under effect of stress, comprise frame, graduated entablature, sill, loading counterweight, transmission rod, upper afterburning Kun and lower afterburning Kun, one end of described entablature is hinged with frame side, the other end hangs and loads counterweight, and there is the top shoe along entablature longitudinal sliding motion centre; Described concrete sample is placed between afterburning Kun and lower afterburning Kun, the bottom of transmission rod by upper afterburning Kun power transmission in concrete sample, lower afterburning Kun is by the base support of frame, described sill is positioned at below entablature, its one end with frame opposite side chain connection, described top shoe is pressed in the top of sill, and sill is pressed in the top of transmission rod.This invention can overcome the Stress relaxation of spring force, but in use there is following shortcoming in this loading equipemtn: 1) adopt two afterburning Kun to apply stress, need employing two scales, the size of force is not directly perceived, Stress calculation is cumbersome, sill needs to arrange scale simultaneously, and rigidity is lower, cannot apply larger stress to test specimen; 2) force application apparatus adopts common articulated manner, and the precision of force is lower; 3) auto-compensation to concrete sample stress relaxation cannot be realized.
[summary of the invention]
The technical problems to be solved in the utility model is to provide one and carries out auto-compensation to concrete sample stress relaxation, the charger of the concrete sample corrosion test under effect of stress keeping concrete sample stress constant.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, the charger of a kind of concrete sample corrosion test under effect of stress, comprise the container of frame, load maintainer, force transmission mechanism, specimen holder and splendid attire corrosive liquid, force transmission mechanism is connected with specimen holder by connecting link, specimen holder comprises pressue device and regulating device, and regulating device comprises control circuit, servomotor and lifter; Lifter is by driven by servomotor, and servomotor is connected with control circuit; The connecting link described in one termination of pressue device, another termination lifter.
Above-described charger, force transmission mechanism comprises afterburning lever and connecting rod, load maintainer is the leverage of weighing based on measuring lever, afterburning lever arrangement in the below of measuring lever, afterburning lever by the fulcrum pivot of afterburning lever hold group with frame hinged; The upper end of connecting rod is held with the emphasing knife of measuring lever and is connected, and the end that group and afterburning lever are held by afterburning lever arm of force cutter in lower end is hinged; Specimen holder by the emphasing knife of afterburning lever hold group with afterburning lever hinged.
Above-described charger, leverage of weighing comprises scale frame, increases stone roller, stone roller is hung and, sliding weight and described measuring lever, scale frame is fixed on the top of frame, measuring lever by measuring lever fulcrum pivot hold group with scale frame hinged, stone roller hang by stone roller hang cutter hold the end that group is suspended on the long arm of force of measuring lever; The size of the position change heap(ed) capacity of stone roller and adjustment sliding weight is increased by increase and decrease.
Above-described charger, upper rack comprises entablature, and the fulcrum pivot of afterburning lever holds and is fixed on below entablature, and the fulcrum pivot of afterburning lever is fixed on afterburning lever; Described connecting rod is adjustable in length connecting rod.
Above-described charger, the base of frame comprises sill, and lifter is fixed on sill; The top of lifter comprises lifter plate and complex root column, and the lower end of column is fixed on lifter plate; Specimen holder comprises connector, pull bar, arm-tie, supporting plate, pressing plate and complex root pulling force screw rod, and the periphery of pressing plate comprises a plurality of leghole, and column, through leghole, the screw thread of the upper end of column is rotary with nut and is fixed on column by pressing plate; Pressing plate comprises a plurality of screw hole, and the lower end of pulling force screw rod is fixed on supporting plate, and top is through the screw hole of pressing plate, and upper end and arm-tie are fixed; Middle part and the pull bar of arm-tie are fixed, and the upper end of pull bar is connected with connector, and the top of connector is connected with described connecting link; Described concrete sample is placed between supporting plate and pressing plate.
Above-described charger, described container is placed between lifter plate and pressing plate, and concrete sample and supporting plate are arranged in a reservoir.
Above-described charger, connector comprises yoke, spherical sleeve and bearing pin, and the end of yoke comprises threaded hole, pull bar upper end screw in the threaded hole of yoke; The fork of yoke comprises pin-and-hole, and one end of connecting link comprises external thread, and the other end comprises sphere hole, and spherical sleeve is arranged in sphere hole, the outside surface of spherical sleeve and sphere hole adaptation; Connecting link and yoke, through the pin-and-hole of yoke and the endoporus of spherical sleeve, are combined by bearing pin; In the threaded hole that the emphasing knife screwing into afterburning lever of connecting link holds.
Above-described charger, the fulcrum pivot of afterburning lever holds and holds the cutter bearing respectively comprising U-shaped, two pieces of web joints and two pieces of cutter supporting blocks with the emphasing knife of afterburning lever, U-shaped cutter bearing comprises connecting portion and two blocks of side plates, connecting portion comprises threaded hole, side plate is hook-type, cutter supporting block is fixed on the inner side of side plate gib head, and the opening of side plate is linked into an integrated entity by web joint; In the fulcrum tool bore that the afterburning fulcrum pivot of lever and the emphasing knife of afterburning lever are separately fixed at afterburning lever and emphasis tool bore.
Above-described charger, regulating device comprises worm type of reduction gearing; Lifter is driven by worm type of reduction gearing by servomotor; Control circuit comprises controller and two position transducers, and two position transducers are arranged in the foresight position on scale frame, lay respectively at above and below measuring lever; The signal output part of two position transducers connects controller respectively, the output servo motor termination of controller.
Above-described charger, in downward projection face, the angle of measuring lever and afterburning lever is 10-20 °; Leverage of weighing comprises balance bob, and balance bob is arranged on the end of the short arm of force of measuring lever
The control circuit of the utility model charger is monitored load maintainer, automatically regulates the height of lifter according to the state of load maintainer, can carry out auto-compensation to concrete sample stress relaxation, keeps concrete sample stress constant.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural drawing of the utility model embodiment charger.
Fig. 2 is the vertical view of the utility model embodiment charger.
Fig. 3 is the partial enlarged drawing at I position in Fig. 1.
Fig. 4 is the front view of the afterburning lever of the utility model embodiment.
Fig. 5 is the vertical view of the afterburning lever of the utility model embodiment.
Fig. 6 is the front view of the utility model embodiment afterburning lever cutter bearing.
Fig. 7 is that A in Fig. 6 is to cut-open view.
Fig. 8 is the front view of the utility model embodiment afterburning lever cutter supporting block.
Fig. 9 is the vertical view of the utility model embodiment afterburning lever cutter supporting block.
Figure 10 is the front view of the afterburning balance pivot cutter of the utility model embodiment and emphasing knife.
Figure 11 is the left view of the afterburning balance pivot cutter of the utility model embodiment and emphasing knife.
Figure 12 is the theory diagram of the utility model embodiment control circuit.
[embodiment]
The structure of the utility model concrete sample charger embodiment of corrosion test under effect of stress as shown in Figure 1 to 11, comprises the container of frame 1, load maintainer, force transmission mechanism, specimen holder and splendid attire corrosive liquid.Force transmission mechanism is connected with specimen holder by connecting link, and specimen holder comprises pressue device and regulating device, and regulating device comprises control circuit, servomotor and lifter; Lifter is by driven by servomotor, and servomotor is connected with control circuit; One end extension bar in succession of pressue device, another termination lifter; Control circuit is monitored load maintainer, automatically regulates the height of lifter according to the state of load maintainer.
Force transmission mechanism comprises afterburning lever 10 and connecting rod 14.
Load maintainer is the leverage of weighing based on measuring lever 2.
Measuring lever 2 and afterburning lever 10 stagger mutually, and in downward projection face, measuring lever 2 is 13 ° with the angle α of afterburning lever 10.
Leverage of weighing also comprises scale frame 3, increases stone roller 4, cuts or polish jade with an emery wheel extension 5, balance bob 6 and and sliding weight 7.Scale frame 3 is fixed on the top of frame 1, and measuring lever 2 holds group hinged with scale frame 3 (measuring lever fulcrum pivot hold organize not shown) by measuring lever fulcrum pivot, and stone roller extension 5 holds by cutting or polish jade with an emery wheel extension cutter the end that group 30 is suspended on the long arm of force of measuring lever 2.
Afterburning lever 10 is arranged in the below of measuring lever 2, and it is hinged with frame 1 that afterburning lever 10 holds group by afterburning balance pivot cutter.Specimen holder by afterburning lever emphasing knife hold group with afterburning lever 10 hinged.
The structure of afterburning lever 10 as shown in Figure 4 and Figure 5, comprises fulcrum tool bore 1001, emphasis tool bore 1002 and afterburning lever arm of force tool bore 1003.In the fulcrum tool bore 1001 that the fulcrum pivot 8 of afterburning lever 10 and emphasing knife 9 are separately fixed at afterburning lever 10 and emphasis tool bore 1002, afterburning lever arm of force tool bore 1003 is fixed with afterburning lever arm of force cutter.
The fulcrum pivot of afterburning lever 10 holds cutter bearing 11, two pieces of web joints 12 and two pieces of cutter supporting blocks 13 of holding with the emphasing knife of afterburning lever 10 and respectively comprising U-shaped, U-shaped cutter bearing comprises connecting portion 1101 and two blocks of side plates 1102, connecting portion has a threaded hole 1103, side plate 1102 is hook-type, cutter supporting block 14 is fixed on the inner side of side plate 1102 gib head, and the opening of side plate 1102 is connected by screw integral by web joint 12.
Power is passed to afterburning lever 10 by connecting rod 14 by measuring lever 2, and connecting rod 14 is adjustable in length connecting rod.
The cutter that the upper end of connecting rod 14 and the emphasing knife of measuring lever hold group holds 25 and is connected, and it is hinged with the end of afterburning lever 10 arm of force that group 26 is held by afterburning lever arm of force cutter in lower end.
An entablature 101 is arranged at frame 1 top, and the cutter bearing 11 that afterburning balance pivot cutter holds is fixed on the below of entablature 101 by screw 15.
Frame 1 base has a sill 102, lifter 31 is fixed on sill.
Lifter 31 is driven by worm type of reduction gearing by servomotor 32.Control circuit comprises foresight 310 place that controller and two position transducers, 33, two position transducers 33 are arranged in scale frame 3, lays respectively at above and below measuring lever 2.
As shown in figure 12, the signal output part of two position transducers 33 connects controller respectively, the output servo motor termination 32 of controller; Two position transducers 33 obtain the positional information of measuring lever 2 respectively, adjusted the height of lifter 31, realize test specimen corrosion stress constant when needing by servomotor 32.
The top of lifter 31 comprises lifter plate 34 and 4 root post 35, and the lower end of column 35 is fixed on lifter plate 34.
Specimen holder comprises connector, pull bar 37, arm-tie 38, supporting plate 39, pressing plate 40 and 4 pulling force screw rods 41.The corner of pressing plate 40 has 4 legholes, and column 35, through leghole, the screw thread of the upper end of column 35 is rotary with nut 42 and is fixed on column 35 by pressing plate 40.
Pressing plate 40 also comprises 4 screw holes, and the lower end of pulling force screw rod 41 is fixed on supporting plate 39, and top is through the screw hole of pressing plate 40, and the upper end of pulling force screw rod 41 is fixed by nut 43 and arm-tie 38.
The middle part of arm-tie 38 and the lower end of pull bar 37 are fixed, and the upper end of pull bar 37 is connected with connector, and the top of connector is connected with connecting link 19.Concrete sample 100 is placed between supporting plate 39 and pressing plate 40.
The container 28 that corrosive liquid is housed is placed between lifter plate 34 and pressing plate 40, and concrete sample 100 and supporting plate 39 are immersed in container 28.
Connector comprises yoke 20, spherical sleeve 21 and bearing pin 22, and there is a threaded hole end of yoke 20, screwing in the threaded hole of yoke 20 of concrete sample reinforcing bar 200 upper end.The fork of yoke 20 has a pin-and-hole, and there is external thread one end of connecting link 19, and the other end has a sphere hole, spherical sleeve 21 be arranged on connecting link 19 sphere hole in, the outside surface of spherical sleeve 21 and sphere hole are adaptive, and both form universal coupling.Connecting link 19 and yoke 20, through the pin-and-hole of yoke 20 and the endoporus of spherical sleeve 21, are combined by bearing pin 22.The afterburning lever emphasing knife that screws into of connecting link 19 holds in the threaded hole of cutter bearing 11.
Test specimen 100 is soaked in and is equipped with in the container 28 of corrosive liquid, to realize the accelerated deterioration of test specimen.Before loading, first adjust initial zero balance by balance bob 6, power arm one end of measuring lever 2 can be hung by stone roller extension 5 and increase stone roller 4, by the height and position regulating the length of adjustable link 14 can change specimen holder connector.
Measuring lever 2 increases stone roller 4 by increase and decrease and mobile adjustment sliding weight 7 changes the size of heap(ed) capacity and directly can read the heap(ed) capacity of load.
The fulcrum of measuring lever 2 and afterburning lever 10 and hard point all use cutter bearing structure.
The above embodiment of the utility model adopts above-mentioned multi-grade lever structure, the fulcrum of large and small lever and hard point all use cutter and cutter bearing structure, frictional resistance is little, power transmission precision is high, compared with existing stress corrosion device, this device volume is little, making is simple, cost is low, rigidity is large, precision is high, operation is more simple, amplifies by the secondary of lever the stress corrosion realized component, hold a year stress amplitude to significantly improve, larger test specimen can be suitable for.
The specimen holder of the above embodiment of the utility model comprises pressue device and regulating device, by being arranged on the measuring lever positional information that measuring lever claims the location sensitive position transducer of adjacent measuring lever foresight on frame to obtain, adjust the height of lifter, can guarantee to apply constant corrosion stress, eliminate the lax of corrosion stress, realize the electrical servo function of stress loading.
Claims (10)
1. the charger of concrete sample corrosion test under effect of stress, comprise the container of frame, load maintainer, force transmission mechanism, specimen holder and splendid attire corrosive liquid, force transmission mechanism is connected with specimen holder by connecting link, it is characterized in that, specimen holder comprises pressue device and regulating device, and regulating device comprises control circuit, servomotor and lifter; Lifter is by driven by servomotor, and servomotor is connected with control circuit; The connecting link described in one termination of pressue device, another termination lifter.
2. charger according to claim 1, it is characterized in that, force transmission mechanism comprises afterburning lever and connecting rod, load maintainer is the leverage of weighing based on measuring lever, afterburning lever arrangement is in the below of measuring lever, and it is hinged with frame that afterburning lever holds group by the fulcrum pivot of afterburning lever; The upper end of connecting rod is held with the emphasing knife of measuring lever and is connected, and the end that group and afterburning lever are held by afterburning lever arm of force cutter in lower end is hinged; Specimen holder by the emphasing knife of afterburning lever hold group with afterburning lever hinged.
3. charger according to claim 2, it is characterized in that, leverage of weighing comprises scale frame, increases stone roller, stone roller is hung and, sliding weight and described measuring lever, scale frame is fixed on the top of frame, measuring lever by measuring lever fulcrum pivot hold group with scale frame hinged, stone roller hang by stone roller hang cutter hold the end that group is suspended on the long arm of force of measuring lever; The size of the position change heap(ed) capacity of stone roller and adjustment sliding weight is increased by increase and decrease.
4. charger according to claim 2, is characterized in that, upper rack comprises entablature, and the fulcrum pivot of afterburning lever holds and is fixed on below entablature, and the fulcrum pivot of afterburning lever is fixed on afterburning lever; Described connecting rod is adjustable in length connecting rod.
5. charger according to claim 2, is characterized in that, the base of frame comprises sill, and lifter is fixed on sill; The top of lifter comprises lifter plate and complex root column, and the lower end of column is fixed on lifter plate; Specimen holder comprises connector, pull bar, arm-tie, supporting plate, pressing plate and complex root pulling force screw rod, and the periphery of pressing plate comprises a plurality of leghole, and column, through leghole, the screw thread of the upper end of column is rotary with nut and is fixed on column by pressing plate; Pressing plate comprises a plurality of screw hole, and the lower end of pulling force screw rod is fixed on supporting plate, and top is through the screw hole of pressing plate, and upper end and arm-tie are fixed; Middle part and the pull bar of arm-tie are fixed, and the upper end of pull bar is connected with connector, and the top of connector is connected with described connecting link; Described concrete sample is placed between supporting plate and pressing plate.
6. charger according to claim 5, is characterized in that, described container is placed between lifter plate and pressing plate, and concrete sample and supporting plate are arranged in a reservoir.
7. charger according to claim 5, is characterized in that, connector comprises yoke, spherical sleeve and bearing pin, and the end of yoke comprises threaded hole, pull bar upper end screw in the threaded hole of yoke; The fork of yoke comprises pin-and-hole, and one end of connecting link comprises external thread, and the other end comprises sphere hole, and spherical sleeve is arranged in sphere hole, the outside surface of spherical sleeve and sphere hole adaptation; Connecting link and yoke, through the pin-and-hole of yoke and the endoporus of spherical sleeve, are combined by bearing pin; In the threaded hole that the emphasing knife screwing into afterburning lever of connecting link holds.
8. charger according to claim 2, it is characterized in that, the fulcrum pivot of afterburning lever holds and holds the cutter bearing respectively comprising U-shaped, two pieces of web joints and two pieces of cutter supporting blocks with the emphasing knife of afterburning lever, U-shaped cutter bearing comprises connecting portion and two blocks of side plates, connecting portion comprises threaded hole, side plate is hook-type, and cutter supporting block is fixed on the inner side of side plate gib head, and the opening of side plate is linked into an integrated entity by web joint; In the fulcrum tool bore that the afterburning fulcrum pivot of lever and the emphasing knife of afterburning lever are separately fixed at afterburning lever and emphasis tool bore.
9. charger according to claim 3, is characterized in that, regulating device comprises worm type of reduction gearing; Lifter is driven by worm type of reduction gearing by servomotor; Control circuit comprises controller and two position transducers, and two position transducers are arranged in the foresight position on scale frame, lay respectively at above and below measuring lever; The signal output part of two position transducers connects controller respectively, the output servo motor termination of controller.
10. charger according to claim 3, is characterized in that, in downward projection face, the angle of measuring lever and afterburning lever is 10-20 °; Leverage of weighing comprises balance bob, and balance bob is arranged on the end of the short arm of force of measuring lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797285.1U CN204286971U (en) | 2014-12-15 | 2014-12-15 | The charger of a kind of concrete sample corrosion test under effect of stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797285.1U CN204286971U (en) | 2014-12-15 | 2014-12-15 | The charger of a kind of concrete sample corrosion test under effect of stress |
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| Publication Number | Publication Date |
|---|---|
| CN204286971U true CN204286971U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797285.1U Withdrawn - After Issue CN204286971U (en) | 2014-12-15 | 2014-12-15 | The charger of a kind of concrete sample corrosion test under effect of stress |
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| CN (1) | CN204286971U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502212A (en) * | 2014-12-15 | 2015-04-08 | 深圳大学 | Loading device of corrosion test of concrete sample under stress action |
| CN108007860A (en) * | 2017-11-28 | 2018-05-08 | 深圳大学 | The experimental rig of load and armored concrete adhesive property under corrosiveness |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| RU198475U1 (en) * | 2020-02-03 | 2020-07-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования Иркутский государственный университет путей сообщения (ФГБОУ ВО ИрГУПС) | A device for testing structural materials for cyclic flexural strength in corrosive environments |
-
2014
- 2014-12-15 CN CN201420797285.1U patent/CN204286971U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502212A (en) * | 2014-12-15 | 2015-04-08 | 深圳大学 | Loading device of corrosion test of concrete sample under stress action |
| CN104502212B (en) * | 2014-12-15 | 2017-06-20 | 深圳大学 | The loading device of concrete sample corrosion test under stress |
| CN108007860A (en) * | 2017-11-28 | 2018-05-08 | 深圳大学 | The experimental rig of load and armored concrete adhesive property under corrosiveness |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| RU198475U1 (en) * | 2020-02-03 | 2020-07-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования Иркутский государственный университет путей сообщения (ФГБОУ ВО ИрГУПС) | A device for testing structural materials for cyclic flexural strength in corrosive environments |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
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Granted publication date: 20150422 Effective date of abandoning: 20170620 |