CN101929932A - Creep test device - Google Patents

Creep test device Download PDF

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Publication number
CN101929932A
CN101929932A CN 201010129763 CN201010129763A CN101929932A CN 101929932 A CN101929932 A CN 101929932A CN 201010129763 CN201010129763 CN 201010129763 CN 201010129763 A CN201010129763 A CN 201010129763A CN 101929932 A CN101929932 A CN 101929932A
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CN
China
Prior art keywords
creep test
screw rod
reverse frame
dead weight
screw
Prior art date
Application number
CN 201010129763
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Chinese (zh)
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CN101929932B (en
Inventor
陶泽成
Original Assignee
昆山市创新科技检测仪器有限公司
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Priority to CN 201010129763 priority Critical patent/CN101929932B/en
Publication of CN101929932A publication Critical patent/CN101929932A/en
Application granted granted Critical
Publication of CN101929932B publication Critical patent/CN101929932B/en

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Abstract

The invention relates to a creep test device for a dead standard force machine and is characterized by comprising a motor (10) and a screw (19). The screw (19) is in sliding connection with a reverse frame mechanism (13) of the dead standard force machine; the screw (19) and the reverse frame mechanism (13) are provided with mutually-matching limit components respectively so as to prevent the screw (19) and the reverse frame mechanism (13) separating from each other; and the motor (10) is used for driving the screw (19) and is in sliding connection of the reverse frame mechanism (13) of the dead standard force machine through the screw (19) so as to realize one-time loading or unloading for the creep test. The device can realize one-time fast loading/unloading during the creep test, namely that the device can be used as a hoisting device for initial loading and final loading of the creep test. Moreover, the device can avoid excessive force value fluctuation and reduce sticking so as to further improve the precision of the creep test.

Description

Creep test device
Technical field
The present invention relates to creep test device, particularly a kind of creep test device of dead weight machine.
The invention still further relates to a kind of dead weight machine that uses above-mentioned creep test device.
Background technology
Sensor is to be used for directly or indirectly and measurand is got in touch, and measured parameter is changed into the signal that can directly measure, and it provides the necessary raw information of handling and make a strategic decision for system, is the key link in the modern detection system.Along with the appearance of various sensor, require production metrological service that it is tested comprehensively and accurately, examines and determine, and provide consistent reliable technique index.And in the test of sensor, evaluation, calibration process, force standard machines is that force measuring machine is its key equipment.
Dead weight formula force measuring machine is mainly used in the dynamometry and the LOAD CELLS of calibrating or calibration criterion dynamometer and corresponding accuracy, carry out the force measurement work of transmission of quantity value and pin-point accuracy, dynamic effect according to power, adopting the gravity that had of dead weight counterweight in gravity field directly to reappear the power value, is the method for the highest a kind of power of the reproduction value of the modern science and technology accuracy that can reach.Dead weight formula force measuring machine is the highest force measuring machine of accuracy, and national benchmark adopts the type mostly.
Croop property is one of Specifeca tion speeification of force transducer, and it is meant that at load constant (generally being taken as rated load) under the situation that other test condition also remains unchanged, the number percent to specified output is measured in LOAD CELLS output over time.
Force measuring machine is this to be used for the device of calibration sensor, according to the difference of the kind of drive, four kinds of citation forms is roughly arranged: net gravitational force formula, lever, fluid pressure type, superposing type.More than in the force measuring machine of four kinds of patterns, dead weight formula force measuring machine cost is lower, the lever force measuring machine obtains bigger power value easily, fluid pressure type force measuring machine cost is lower.But they all can not realize once adding fast unloading to sensor, the creep of sensor and creep are recovered to measure bring certain difficulty.The fluctuation of power value also can appear in lever and fluid pressure type force measuring machine, influences the accurate calibration to sensor, even is difficult to the creep properties of survey sensor.
In addition, because there is adhesion phenomenon to a certain degree in dead weight formula force measuring machine of the prior art, therefore also can cause adverse influence to creep test.
Summary of the invention
The purpose of this invention is to provide a kind of realize disposable add fast the fluctuation of unloading, power value little, prevent adhesion phenomenon, improve the creep test device of the dead weight formula force measuring machine of creep test precision.
For solving the problems of the technologies described above, the present invention takes following technical scheme: a kind of dead weight machine creep test device is characterized in that: comprise motor and screw rod; Described screw rod is connected slidably with the reverse frame mechanism of dead weight machine, and described screw rod and oppositely respectively have the limiting component that cooperatively interacts on the frame mechanism is to limit described screw rod and described reverse frame mechanism breaks away from mutually; Described motor is used to drive described screw rod, and is connected the disposable load or unload that realizes creep test by described screw rod slidably with the reverse frame mechanism of dead weight machine.
The present invention also aims to provide a kind of dead weight machine that uses above-mentioned creep test device.
Thereby owing to use lifting and the decline of motor-driven screw realization to counterweight, the disposable fast load/unload when therefore can be implemented in creep test promptly can be as creep test original upload and the final hoisting apparatus that loads.In addition, by described device, can also avoid power value fluctuation excessive and weaken adhesion phenomenon, thereby further improve the precision of creep test.
Description of drawings
Fig. 1 is the structural representation of dead weight machine experimental provision.
Fig. 2 is the structural representation of loading portion.
Fig. 3 is a dead weight machine creep test device synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
Fig. 1 shows the structural representation of force sensor caliberating device.Device as shown in Figure 1 comprises loading portion 1, suspension rod 2 and Weight synchronous loading and unloading device 3.
Described loading portion 1 is used for to pressure to be calibrated or pulling force sensor imposed load, and its lower end connects described suspension rod 2; On described suspension rod 2, be equipped with a plurality of counterweight driving mechanisms 3.
Fig. 2 is the structural representation of loading portion.As shown in Figure 2, described loading portion 1 comprises motor 10, moving beam 12, oppositely frame mechanism 13 and screw rod 19.
Described moving beam 12 can move along the vertical of threaded column 111 of described loading portion 1, and can be fixed on arbitrary position of described screw thread, and it has a pallet 110.
The upper end of described reverse frame mechanism 13 connects described screw rod 19, and the lower end is connected with described suspension rod 2; The upper end of described reverse frame mechanism 13 has a pressurization link 14, pressure transducer to be measured is placed between described pallet 110 and the described pressurization link 4, after counterweight is added on the described suspension rod 2, described suspension rod 2 moves downward, thereby drive described reverse frame mechanism 13 and on pressurization link 4 move downward, because described moving beam 12 is fixed on the column 111, therefore pressure transducer to be measured is applied certain load, so that it is demarcated.
Described screw rod 19 can move up and down with respect to back timber 17 under the driving of described motor 10; Simultaneously, the lower end of described screw rod 19 has a teat 18, and it is used for being connected with described pressurization link 14.
Shown in Fig. 2-3, the top of described pressurization link 14 has cutting ferrule 11; Described cutting ferrule 11 has the hollow bulb that matches with the teat 18 of described screw rod 19, at the end of hollow bulb away from described pressurization link 14, has the Access Division of matching with described screw rod 19, and the diameter of described Access Division is less than the diameter of described hollow bulb; Described teat 18 places in the described hollow bulb, because the diameter of teat 18 is greater than the diameter of described Access Division, thereby realize being connected between described screw rod 19 and the described pressurization link 14, simultaneously, has the structure that matches between described screw rod 19 and the described Access Division, thereby make described screw rod 19 can be described relatively pressurization link 14 slide, and realize spacing to described slip by described teat and Access Division.
Thereby because lifting and the decline (being lifting) of having used motor 10 to come drive screw 19 to realize counterweight, the disposable fast load/unload when therefore can be implemented in creep test promptly can be as creep test original upload and the final hoisting apparatus that loads.In addition, by described device, can also avoid power value fluctuation excessive and weaken adhesion phenomenon, thereby further improve the precision of creep test.
The both sides of described pressurization link 14 also have two orienting lugs 15 that have pilot hole; Two guide poles 16 are fixed on the described crossbeam 17, and its lower end is placed in respectively in the pilot hole of described orienting lug 15, to realize the guiding to reverse frame mechanism 13, prevent that described reverse frame mechanism 13 from revolution or deflection taking place, and promptly realize the machine center positioning function.

Claims (7)

1. a dead weight machine creep test device is characterized in that: comprise motor (10) and screw rod (19); Described screw rod (19) is connected slidably with the reverse frame mechanism (13) of dead weight machine, respectively has the limiting component that cooperatively interacts on described screw rod (19) and the reverse frame mechanism (13), breaks away from mutually with described reverse frame mechanism (13) to limit described screw rod (19); Described motor (10) is used to drive described screw rod (19), and is connected the disposable load or unload that realizes creep test by described screw rod (19) slidably with the reverse frame mechanism (13) of dead weight machine.
2. device as claimed in claim 1 is characterized in that: the limiting component on the described screw rod (19) is the teat that is positioned on the described screw rod (19).
3. device as claimed in claim 1, it is characterized in that: described reverse frame mechanism (13) comprises cutting ferrule (11), described cutting ferrule (11) comprises a chute and is positioned at the Access Division of chute end that described Access Division forms the limiting component of described reverse frame mechanism (13).
4. as each described device of claim 1-3, it is characterized in that: also be provided with at least two pilot holes on the described reverse frame mechanism (13), described creep test device also has at least two guide poles (16) that are used with described at least two pilot holes.
5. device as claimed in claim 4 is characterized in that: described pilot hole is positioned on the orienting lug (15).
6. device as claimed in claim 5 is characterized in that: described at least two guide poles (16) are fixed on the crossbeam (17) of described dead weight machine.
7. a dead weight machine is characterized in that: comprise each described dead weight machine creep test device as claim 1-6.
CN 201010129763 2010-03-23 2010-03-23 Creep test device CN101929932B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010129763 CN101929932B (en) 2010-03-23 2010-03-23 Creep test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010129763 CN101929932B (en) 2010-03-23 2010-03-23 Creep test device

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CN101929932A true CN101929932A (en) 2010-12-29
CN101929932B CN101929932B (en) 2012-11-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102419288A (en) * 2011-12-16 2012-04-18 上海发电设备成套设计研究院 Creep-fatigue interaction test device and load loading and unloading method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101358892A (en) * 2008-09-18 2009-02-04 吉林大学 Dead weight type standard force source device with counterweight independently loading and unloading
CN201203473Y (en) * 2008-06-03 2009-03-04 山东省计量科学研究院 Dead weight / lever dual-purpose type force standard plane
CN201803901U (en) * 2010-03-23 2011-04-20 昆山市创新科技检测仪器有限公司 Dead weight machine and creep test device thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201203473Y (en) * 2008-06-03 2009-03-04 山东省计量科学研究院 Dead weight / lever dual-purpose type force standard plane
CN101358892A (en) * 2008-09-18 2009-02-04 吉林大学 Dead weight type standard force source device with counterweight independently loading and unloading
CN201803901U (en) * 2010-03-23 2011-04-20 昆山市创新科技检测仪器有限公司 Dead weight machine and creep test device thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102419288A (en) * 2011-12-16 2012-04-18 上海发电设备成套设计研究院 Creep-fatigue interaction test device and load loading and unloading method thereof
CN102419288B (en) * 2011-12-16 2013-12-25 上海发电设备成套设计研究院 Creep-fatigue interaction test device and load loading and unloading method thereof

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