CN105510119B - Adjustable bent-segment tensile stress loading device - Google Patents
Adjustable bent-segment tensile stress loading device Download PDFInfo
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- CN105510119B CN105510119B CN201610008657.1A CN201610008657A CN105510119B CN 105510119 B CN105510119 B CN 105510119B CN 201610008657 A CN201610008657 A CN 201610008657A CN 105510119 B CN105510119 B CN 105510119B
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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
- 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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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of adjustable bent-segment tensile stress loading devices, wherein, the both ends of more support rods are fixedly connected with pedestal and cover board respectively, solution tank is mounted on the base, supporting station for placing testpieces is placed in solution tank, loading head is placed in the top of supporting station, the top of loading head is sequentially connected connecting rod, S-type force sensor, bearing column and loading bench, the top of loading bench and the lower end of load screw rod connect, the upper section of load screw rod passes through cover board and is connected through a screw thread with cover board, the upper section of load screw rod is set with locking nut, the both ends of two guide rods are connect with cover board and supporting station respectively.The present invention is by converting straight line power for rotary power and being accurately applied on testpieces, it not only can accurately adjust loading force, accurate Control experiment part is bent tensile stress size, and have the characteristics that steadily to load, load holding stablizes, occupies little space, loading device is small on influence is tested.
Description
Technical field
The present invention relates to a kind of bending tensile stress loading devices, more particularly to a kind of material that can allow in galvanic corrosion experiment
Testpieces bending generates the adjustable bent-segment tensile stress loading device of default tensile stress.
Background technique
Currently, influence of the tensile stress to material galvanic corrosion behavior is the research hotspot of corrosion field, galvanic corrosion experiment
The mode that middle bending load generates tensile stress has two o'clock bending, three-point bending, three kinds of four-point bending, two o'clock, three-point bending mode
Loading device it is relatively simple, but the tensile stress that generates of both loading methods exists and is difficult to define and stress raisers etc. are asked
Topic, therefore four-point bending loading method is generallyd use in experiment.Well known four-point bending loading device has permanent deformation and constant load
Two kinds of ways of realization, it is non-adjustable that existing perseverance bending loading device has inconvenient, deflection to be difficult to accurate interpretation, tensile stress
The problems such as section；And existing constant load bending loading device is using mass block load, asks there is also tensile stress adjustable extent is limited
Topic.And well known bending tensile stress loading device is all specially designed without the electrolyte solution being directed in experiment, if having
Electrolyte solution exists, and whole device all needs to impregnate wherein, is unfavorable for analysis of experimental results.
Summary of the invention
The object of the invention is that a kind of adjustable bent-segment tensile stress loading device is provided to solve the above-mentioned problems,
The loading device not only can accurately adjust loading force, accurate Control experiment part tensile stress size, and have steady load, load
Holding stablizes, occupies little space, loading device influences the features such as small to experiment.
The present invention through the following technical solutions to achieve the above objectives:
A kind of adjustable bent-segment tensile stress loading device, including pedestal, support rod, cover board, solution tank, supporting station, load
Head, connecting rod, S-type force sensor, bearing column, loading bench, load screw rod and guide rod, the both ends of the more support rods respectively with
The pedestal is fixedly connected with the cover board, and the solution tank is installed on the pedestal, for placing the branch of testpieces
Cushion cap is placed in the solution tank, and the loading head is placed in the top of the supporting station, and the top of the loading head passes through described
Connecting rod is connect with the lower part of the S-type force sensor, and the top of the S-type force sensor passes through the bearing column and the load
The lower part of platform connects, and the lower end of the top of the loading bench and the load screw rod connects, the upper section of the load screw rod
It is connected through a screw thread across the cover board and with the cover board, the upper section of the load screw rod is set with locking nut, two institutes
The both ends for stating guide rod are connect with the cover board and the supporting station respectively, and the loading head and loading bench are set in two
On the guide rod and it can slide.
In above structure, mounting bracket is collectively formed in pedestal, support rod and cover board；Solution tank for holding examination when needed
Test solution；Supporting station is for placing testpieces；Loading head, connecting rod, S-type force sensor, bearing column, loading bench, load screw rod are total
Straight line power is converted by rotary power and applies stressed power load maintainer to testpieces with being formed；Guide rod adds for ensuring
Power that carrier head is subject to and will not deviation to the power that testpieces applies.
Preferably, the top of the supporting station is equipped with groove, the both ends of the groove form two for placing test
The convex support portion of part, the lower part of the loading head set convex pressure head there are two under, and two pressure heads are located at described in two
Top between support portion.This structure makes testpieces by the support force of two support zones and the pressure of two pressurized portions
There is four-point bending state, there is bending tensile stress on testpieces convex surface at this time, bending tensile stress size can be passed according to S type power
The numerical value that sensor is shown is calculated by mechanics of materials formula.
Preferably, the top of the loading bench is equipped with spherical groove, the lower end of the load screw rod is equipped with bulb, described
Bulb is placed in the spherical groove.
In order to improve test safety, the top of the solution tank is equipped with the protection cap for keeping testpieces stable.
Preferably, the support rod be four and be respectively arranged in the pedestal quadrangle and the cover board quadrangle it
Between.
The beneficial effects of the present invention are:
The present invention not only can be adjusted accurately by converting straight line power for rotary power and being accurately applied on testpieces
Loading force, accurate Control experiment part are bent tensile stress size, and there is steady load, load holding to stablize, occupy little space,
Loading device influences the features such as small to experiment；By the way that solution tank is arranged, only supporting station and testpieces need to can be placed in solution tank
It is tested in interior electrolyte solution, other components need not be immersed in electrolyte solution, be conducive to the smooth operation of test.
Detailed description of the invention
Fig. 1 is the perspective view of adjustable bent-segment tensile stress loading device of the present invention；
Fig. 2 is after adjustable bent-segment tensile stress loading device of the present invention removes pedestal, support rod, cover board and solution tank
Perspective view.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As depicted in figs. 1 and 2, adjustable bent-segment tensile stress loading device of the present invention includes pedestal 1, support rod 9, lid
Plate 11, solution tank 2, supporting station 16, loading head 5, connecting rod 6, S-type force sensor 7, bearing column 8, loading bench 10, load screw rod 13
With guide rod 12, the both ends of four support rods 9 are bolted to connection with pedestal 1 and cover board 11 respectively, and four support rods 9 are divided
It is not installed between the quadrangle of pedestal 1 and the quadrangle of cover board 11, solution tank 2 is installed on pedestal 1, and supporting station 16 is placed in solution tank
In 2, the top of supporting station 16 is equipped with groove 15, and the both ends of groove 15 form two for placing the convex support of testpieces 14
Portion's (unmarked in figure), the top of solution tank 2 are equipped with the protection cap 3 for keeping testpieces 14 stable, and loading head 5 is placed in branch
The top of cushion cap 16, the lower part of loading head 5 set convex pressure head 4 there are two under, and two pressure heads 4 are located at upper between two support portions
The top of side, loading head 5 is connect by connecting rod 6 with the lower part of S-type force sensor 7, and the top of S-type force sensor 7 passes through load
Column 8 is connect with the lower part of loading bench 10, and the top of loading bench 10 is equipped with spherical groove (not shown), loads the lower end of screw rod 13
Equipped with bulb (not shown), the bulb is placed in the spherical groove, is realized between loading bench 10 and load screw rod 13
Contact Transmission connection, the upper section of load screw rod 13 pass through cover board 11 and are connected through a screw thread with cover board 11, load the upper of screw rod 13
Section is set with locking nut (unmarked in figure), and the both ends of two guide rods 12 pass through bolt with cover board 11 and supporting station 16 respectively
Connection, two guide rods 12 are located at two sides of load screw rod 13 and symmetrical, and loading head 5 and loading bench 10 are set with and lead in two
To on bar 12 and can slide.
As depicted in figs. 1 and 2, the working principle of adjustable bent-segment tensile stress loading device of the present invention is as follows:
In application, by the power output of the upper end and rotary power unit (manually or automatically device) that load screw rod 13
End connection, to realize the rotation driving of load screw rod 13；Such as by the signal output end of S-type force sensor 7 and signal handling equipment
The signal input part of computer etc. connects, and can not also install signal handling equipment, and is directly shown according to S-type force sensor 7
Numerical value by manually calculate bending tensile stress size；Testpieces 14 is placed on two support portions at 15 both ends of groove, is in two
Dot point state.When test, turn loads screw rod 11, under the action of screw-driven, the rotary motion conversion of load screw rod 11
It is for linear motion to move along a straight line and pushing down on loading bench 10, loading bench 10 successively push bearing column 8, S-type force sensor 7,
Connecting rod 6, loading head 5, two pressure heads 4 of loading head 5 are pressed down against the middle section of testpieces 14, and testpieces 14 is by loading head 5 and branch
There is four-point bending state in the collective effect of cushion cap 16, compression, there is bending tensile stress, bending on the convex surface of testpieces 14 at this time
The stress numerical value that tensile stress size can be detected according to S-type force sensor 7 is calculated by mechanics of materials formula；Reach predetermined
Loaded load after, can by tighten load screw rod 13 on locking nut keep stable load.When needing, solution tank 2 can
To hold the electrolyte solution that test needs, entire experimental rig is avoided to be soaked in electrolyte solution.
Above-described embodiment is presently preferred embodiments of the present invention, is not a limitation on the technical scheme of the present invention, as long as
Without the technical solution that creative work can be realized on the basis of the above embodiments, it is regarded as falling into the invention patent
Rights protection scope in.
Claims (4)
1. a kind of adjustable bent-segment tensile stress loading device, it is characterised in that: including pedestal, support rod, cover board, solution tank, branch
Cushion cap, loading head, connecting rod, S-type force sensor, bearing column, loading bench, load screw rod and guide rod, more support rods
Both ends are fixedly connected with the pedestal and the cover board respectively, and the solution tank is installed on the pedestal, for placing test
The supporting station of part is placed in the solution tank, and the loading head is placed in the top of the supporting station, the loading head it is upper
Portion is connect by the connecting rod with the lower part of the S-type force sensor, and the top of the S-type force sensor passes through the bearing column
It is connect with the lower part of the loading bench, the lower end of the top of the loading bench and the load screw rod connects, the load
The upper section of screw rod passes through the cover board and is connected through a screw thread with the cover board, and the upper section of the load screw rod is set with locking screw
Mother, the both ends of two guide rods are connect with the cover board and the supporting station respectively, the loading head and loading bench difference
It is set on two guide rods and can slide；The top of the supporting station is equipped with groove, and the both ends of the groove are formed
Two are used to place the convex support portion of testpieces, and the lower part of the loading head sets convex pressure head there are two under, described in two
Pressure head is located at the top between two support portions.
2. adjustable bent-segment tensile stress loading device according to claim 1, it is characterised in that: the top of the loading bench
Equipped with spherical groove, the lower end of the load screw rod is equipped with bulb, and the bulb is placed in the spherical groove.
3. adjustable bent-segment tensile stress loading device according to claim 1 or 2, it is characterised in that: the solution tank
Top is equipped with the protection cap for keeping testpieces stable.
4. adjustable bent-segment tensile stress loading device according to claim 1 or 2, it is characterised in that: the support rod is
It four and is respectively arranged between the quadrangle of the pedestal and the quadrangle of the cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008657.1A CN105510119B (en) | 2016-01-07 | 2016-01-07 | Adjustable bent-segment tensile stress loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008657.1A CN105510119B (en) | 2016-01-07 | 2016-01-07 | Adjustable bent-segment tensile stress loading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105510119A CN105510119A (en) | 2016-04-20 |
| CN105510119B true CN105510119B (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610008657.1A Active CN105510119B (en) | 2016-01-07 | 2016-01-07 | Adjustable bent-segment tensile stress loading device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105784359B (en) * | 2016-05-06 | 2019-09-13 | 江西昌河航空工业有限公司 | A kind of force application apparatus of calibration |
| CN106706016B (en) * | 2016-11-30 | 2019-07-26 | 无锡市创恒机械有限公司 | The sensor device of fine-tuning position |
| CN109459305B (en) * | 2018-12-11 | 2024-09-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Hydraulic concrete fatigue fracture test device |
| CN110487633B (en) * | 2019-08-29 | 2022-08-26 | 中国石油大学(北京) | Elastic modulus measuring method and device |
| CN111443030A (en) * | 2020-04-03 | 2020-07-24 | 江苏法尔胜缆索有限公司 | Method for testing salt spray corrosion resistance of steel wire in stress state |
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| CN105510119A (en) | 2016-04-20 |
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