CN205991923U - Double card bell and spigot joint fatigue bending machine - Google Patents
Double card bell and spigot joint fatigue bending machine Download PDFInfo
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- CN205991923U CN205991923U CN201620800083.7U CN201620800083U CN205991923U CN 205991923 U CN205991923 U CN 205991923U CN 201620800083 U CN201620800083 U CN 201620800083U CN 205991923 U CN205991923 U CN 205991923U
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Abstract
A kind of double card bell and spigot joint fatigue bending machine, including the upper mounting plate with horizontal slide, the lower platform with circular arc slideway and the column connecting upper mounting plate and lower platform, and for clamping the upper locking device at test specimen two ends and lower locking device；Described upper locking device lower end is fixed on calibration platform, and described calibration platform can slide under the driving of leading screw on slideway；Described lower locking device lower end is fixed on circular arc moving moving platform, and described circular arc moving moving platform can slide in the driving lower edge circular arc slideway of cam and cam drive system；Also include providing hydraulic system, foil gauge and the electrical control cubicles for testing test specimen STRESS VARIATION of pressure for test specimen, testing fatigue can be curved to the steel pipe with double card joint, and degree of accuracy greatly improves, it is very high that stress adjusts efficiency, command displacement precision is high, experiment result accuracy is good, improves the safety in utilization of product.
Description
Technical field
This utility model belongs to physics and chemistry measurement apparatus technical field, specifically a kind of double card bell and spigot joint and steel pipe is carried out
The double card bell and spigot joint fatigue bending machine of fatigue property detection.
Background technology
Double card bell and spigot joint can be in nineteen forty-seven utility model by American's Fred A. thunder.In contrast to screw thread, reaming, single deck tape-recorder set
Deng joint form, ferrule joint is a kind of small-bore pipe pipe connecting taking into account sealing and safety.Ferrule joint has
Following advantage：
(1) withstand up to the pressure of pipe explosion and do not leak.
(2) can be used for vacuum and high pressure liquid system.
(3) can seal in the guarantee of work under low temperature state, sealing that also can be lasting under the highest rated temperature of pipe.
(4) repeat dismounting and ensure sealing.
Ferrule joint has as above advantage, has nowadays been widely used in nuclear power, instrument and meter, petrochemical industry, electricity
The industries such as power.Especially in the nuclear power field high to material performance requirement, but simultaneously, harsh use condition and to safety
High requirement, inevitable requirement will be understood in depth to the performance of similar material, it is therefore desirable to accurately and reliably be examined to material
Survey, to grasp its performance；At present during core level Product checking, according to Overseas Correlative Standards, repeated bend test is weighing apparatus
The key parameter of amount ferrule fitting assembly sealing property and component strength in use.Nowadays not particularly suitable at home
Flexural fatigue in ferrule joint detects testing machine, and the detection of Related product is currently with vibrating device or other oil cylinder shapes
Formula structure, invar pipe bending displacement less it is desirable to high precision, displacement is not readily accomplished using the structure control precision such as oil cylinder, cylinder
Control, and often plain fatigue testing machine, only have single displacement fatigue test it is impossible to realize strain measurement and control, pressurization
Etc. function.In sum, carry out joint at present and tube bending experiment on fatigue properties machine only enables single Bit andits control, and
Degree of accuracy is not high, and stress regulation is inefficient, and command displacement precision is low, and experiment result accuracy is poor, has had a strong impact on product
Using effect.
Utility model content
The purpose of this utility model is to provide a kind of double card bell and spigot joint fatigue bending machine, can be to double card joint
Steel pipe is curved testing fatigue, to solve the problems of the prior art.
This utility model is realized in the following way：A kind of double card bell and spigot joint fatigue bending machine, is characterized in that：
The lower platform including the upper mounting plate with horizontal slide, carrying circular arc slideway and the column connecting upper mounting plate and lower platform, with
And for clamping the upper locking device at test specimen two ends and lower locking device；
Described upper locking device lower end is fixed on calibration platform, and described calibration platform can be in slideway under the driving of leading screw
Upper slip；Described lower locking device lower end is fixed on circular arc moving moving platform, described circular arc moving moving platform can in cam and
The driving lower edge circular arc slideway of cam drive system slides；
Also include for test specimen provide pressure hydraulic system, for test the foil gauge of test specimen STRESS VARIATION with
And electrical control cubicles.
Further：Described foil gauge is connected with stress test system.
Further：Described hydraulic system is connected with test specimen by manometer tube.
Further：The center of circle of described circular arc slideway is located at the center of upper locking device lower plane for test specimen.
Further：Described electrical control cubicles are provided with HYDRAULIC CONTROL SYSTEM switch and hydraulic system display lamp and motor control
Switch and motor operation display lamp.
Further：Described test specimen is the steel pipe with cutting ferrule, and described foil gauge is centrally located on test specimen
2-8mm below portion's cutting ferrule lower edge.
Further：Described foil gauge is centrally located at 4.6mm below the cutting ferrule lower edge of test specimen top.
Further：Also include pressure test device.
Further：Touching display screen is additionally provided with electrical control cubicles.
Advantageous Effects of the present utility model are：
1. upper mounting plate is provided with calibration platform, with accurate adjustment test specimen horizontal level, and then can realize tested test specimen
Original state stress meets the requirements.
2. by the supervision of strain acquisition system, adjust the displacement of lower locking device steadily, make tested test specimen reach standard
Requirement strains and records displacement, thus experiment has been effectively ensured carrying out under constant stress, result is accurately and reliably.
3. pass through cam mechanism and slideway and connect lower locking device it is ensured that displacement accuracy.
4. this utility model has and is adjusted axially function, the length compensation of achievable test specimen, reduces piece lengths processing essence
Degree.
5. on lower platform install circular arc mobile platform it is ensured that in process of the test shaftless to additional stress.
6. this utility model also has structure simply, low cost, the advantage of long service life.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is sectional view at A of the present utility model；
Fig. 3 is sectional view at B of the present utility model；
Fig. 4 is the structural representation of test specimen in this utility model.
Reference numeral explanation：
1st, column, 2, actuated by cams motor, 3, cam, 4, cam drive system, 5, circular arc moving moving platform, 6, lower flat
Platform, 7, circular arc slideway, 8, lower locking device, 9, test specimen, 10, stress test system, 11, foil gauge, 12, upper mounting plate,
13rd, leading screw, 14, horizontal slide, 15, leading screw motor, 16, calibration platform, 17, upper locking device, 18, manometer tube, 19, liquid
Pressure system, 20, electrical control cubicles, 21, HYDRAULIC CONTROL SYSTEM switch and display lamp, 22, motor control switch and display lamp.
By example, this utility model is described in further detail below in conjunction with the accompanying drawings, but following examples is only real
With new example therein, do not represent the rights protection scope that this utility model is limited, right of the present utility model
Protection domain is defined by claims.
Specific embodiment
It is a kind of this utility model double card bell and spigot joint fatigue bending machine as Figure 1-4, including with horizontal slide
14 upper mounting plate 12, the lower platform 6 with circular arc slideway 7 and the column 1 connecting upper mounting plate and lower platform, and be used for clamping
The upper locking device 17 at test specimen 9 two ends and lower locking device 8；
Described upper locking device lower end is fixed on calibration platform 16, and described calibration platform can be with leading screw motor
Slide on horizontal slide under 15 driving of leading screw 13；Described lower locking device lower end is fixed on circular arc moving moving platform 5,
Described circular arc moving moving platform can be in the driving lower edge circular arc of the cam 3 with actuated by cams motor 2 and cam drive system 4
Slideway slides；
Also include providing the hydraulic system 19 of pressure for test specimen, hydraulic system passes through manometer tube 18 with test specimen even
Connect；
For testing and monitoring the foil gauge 11 of test specimen STRESS VARIATION, foil gauge is connected with stress test system 10
Connect, can be tested by stress test system and monitor test specimen STRESS VARIATION；
Also include electrical control cubicles 20, HYDRAULIC CONTROL SYSTEM switch and display lamp 21, motor control switch machine and display lamp 22, also
It is provided with touching display screen, achievable visualized operation, can carry out, test specimen bending strain setting, number of run, pressure and other parameters
Control, carry out test specimen numbering, safety alarm lamp parameter function sets, and can also show pressure time curve, displacement time in real time
Curve, strain time graph etc., and ensure that strain is reported to the police, overpressure alarm, falls the realization of the functions such as pressure stopping, spacing alarm.
Preferably：The center of circle of described circular arc slideway is located at the center of upper locking device lower plane for test specimen, also
It is equal to the length of test specimen free portion, when so setting ensure that locking device moves back and forth instantly, test specimen
Length direction will not be subject to extra stress, thus ensure that the accurate of test result.
Preferably：Described test specimen is the steel pipe with cutting ferrule, and described foil gauge is centrally located at away from test specimen top
2-8mm below cutting ferrule lower edge, particularly preferably 4.6mm.
In order to further understand this utility model, below using method of the present utility model is made an explanation：
As shown in figure 4, test specimen 9 includes cutting ferrule body 91, cutting ferrule nut 92, front cutting ferrule 93 and rear cutting ferrule 94, test
When in the middle of be one section of steel pipe 90, use double card bell and spigot joint to connect manometer tube and closure up and down respectively, top is fixed, referred to as fixed end；Under
Portion can be with relative movement, referred to as moved end.
When carrying out the test of double card bell and spigot joint flexural fatigue with this utility model, first, by test specimen fixed end and upper locking device
Connect and pass through calibration platform to be indirectly placed on horizontal slide, upper locking device lower plane and test specimen top cutting ferrule during connection
Lower edge is highly consistent, and test specimen moved end is connected with the lower locking device on circular arc mobile platform, and foil gauge is fixed on steel
On pipe, foil gauge is connected with strain measurement system simultaneously, and strain device is reset；After connection, because steel pipe can be subject in connection procedure
To certain power effect so as to produce stress, impact test result it is therefore necessary to eliminate the stress of generation, can by drive
Leading screw slides along slideway, and then adjusts the relative position of upper locking device, so that strain is zeroed, now test specimen is in free state.
Then, pressure connector is connected on test specimen, starts switch board, press pressure control switch, test specimen is entered
Row water filling and aerofluxuss, are now first not pressurized.Required strain value, such as 12MPa, cycle-index, examination are set on controlling interface
Test pressure and other parameters, open automatic function, control lower locking mechanism to start to move along arc orbit, drive steel pipe moved end
Mobile, make tube bending generation stress, until strain records displacement readings after reaching default strain value and returns to zero point.
Finally, test specimen is pressurizeed, after pressure reaches preset pressure and keeps 5min, actuated by cams electric motor starting, leads to
Cross cam mechanism and cam drive system rotation, so that circular arc mobile platform is moved, moving displacement is the displacement of previous step record
Reading, when number of bends reaches set point number, equipment is out of service, automatically unloading, and experiment finishes.
Control system of the present utility model can be touching display screen it is also possible to built-in computer, or adopts prior art handss
Section, realizes controlling and display function.In fatigue test, system record strain curve, pressure curve and displacement curve.Test knot
Shu Hou, prints experimental report.
If spacing alarm occurs in process of the test, strain is reported to the police, pressure exceedes setting pressure 10% or pressure drop to setting
During constant-pressure 50%, buzzer warning, assay device is out of service, when abnormal conditions in process of the test, presses jerk and opens
Close, motor stopping, test is interrupted.
It should be noted that：
1st, cam mechanism and cam drive system are prior art, in this utility model, the rotation of cam are passed through transmission
Mechanism becomes the power driving lower locking device to move back and forth, and has experimental precision height, the advantage of reliable transmission.Foil gauge with should
Become collecting test system and be similarly prior art.
2nd, understand, fatigue failure is big absolutely through substantial amounts of steel pipe fatigue damage case with using the experiment of this utility model device
Part occur below the cutting ferrule of fixed end 2-8mm, at particularly 4.6mm below the cutting ferrule of fixed end, thus by be placed in described foil gauge away from
2-8mm below the cutting ferrule lower edge of test specimen top, at particularly preferably 4.6mm, can make test result more accurate.
In experimentation, the original state of test specimen is the principal element of impact test result, so will especially pay attention to,
The impact to test result for the length of tubing is very little, can ignore.
Claims (9)
1. a kind of double card bell and spigot joint fatigue bending machine, is characterized in that：Including the upper mounting plate with horizontal slide, carry circular arc
The lower platform of shape slideway and the column connecting upper mounting plate and lower platform, and for clamping the upper locking device at test specimen two ends
With lower locking device；
Described upper locking device lower end is fixed on calibration platform, and described calibration platform can be in horizontal slide under the driving of leading screw
Upper slip；Described lower locking device lower end is fixed on circular arc moving moving platform, described circular arc moving moving platform can in cam and
The driving lower edge circular arc slideway of cam drive system slides；
Also include providing hydraulic system, foil gauge and the electricity for testing test specimen STRESS VARIATION of pressure for test specimen
Control cabinet.
2. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Described hydraulic system passes through pressure
Solenoid is connected with test specimen.
3. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Described foil gauge is surveyed with stress
Test system is connected.
4. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：The circle of described circular arc slideway
The heart is located at the center of upper locking device lower plane for test specimen.
5. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Described electrical control cubicles are provided with liquid
Pressure system control switch and hydraulic system display lamp and motor control switch and motor operation display lamp.
6. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Described test specimen be with
The steel pipe of cutting ferrule, described foil gauge is centrally located at 2-8mm below the cutting ferrule lower edge of test specimen top.
7. double card bell and spigot joint fatigue bending machine according to claim 6, is characterized in that：Described foil gauge is centrally located at
4.6mm below the cutting ferrule lower edge of test specimen top.
8. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Also include stress test dress
Put.
9. double card bell and spigot joint fatigue bending machine according to claim 1, is characterized in that：Electrical control cubicles are additionally provided with tactile
Control display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800083.7U CN205991923U (en) | 2016-07-28 | 2016-07-28 | Double card bell and spigot joint fatigue bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800083.7U CN205991923U (en) | 2016-07-28 | 2016-07-28 | Double card bell and spigot joint fatigue bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205991923U true CN205991923U (en) | 2017-03-01 |
Family
ID=58102670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620800083.7U Active CN205991923U (en) | 2016-07-28 | 2016-07-28 | Double card bell and spigot joint fatigue bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205991923U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290027A (en) * | 2016-07-28 | 2017-01-04 | 沈阳仪表科学研究院有限公司 | Double card bell and spigot joint fatigue bending machine |
| CN110967174A (en) * | 2019-12-03 | 2020-04-07 | 中国核电工程有限公司 | Method for verifying matching performance of ferrule connector and instrument tube for nuclear power station |
-
2016
- 2016-07-28 CN CN201620800083.7U patent/CN205991923U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290027A (en) * | 2016-07-28 | 2017-01-04 | 沈阳仪表科学研究院有限公司 | Double card bell and spigot joint fatigue bending machine |
| CN106290027B (en) * | 2016-07-28 | 2023-08-11 | 沈阳国仪检测技术有限公司 | Bending fatigue testing machine for double-clamping sleeve joint |
| CN110967174A (en) * | 2019-12-03 | 2020-04-07 | 中国核电工程有限公司 | Method for verifying matching performance of ferrule connector and instrument tube for nuclear power station |
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