CN201803901U - Dead weight machine and creep test device thereof - Google Patents
Dead weight machine and creep test device thereof Download PDFInfo
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- CN201803901U CN201803901U CN2010201375596U CN201020137559U CN201803901U CN 201803901 U CN201803901 U CN 201803901U CN 2010201375596 U CN2010201375596 U CN 2010201375596U CN 201020137559 U CN201020137559 U CN 201020137559U CN 201803901 U CN201803901 U CN 201803901U
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- screw rod
- creep test
- dead weight
- weight machine
- frame mechanism
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Abstract
The utility model relates to a creep test device of a dead weight machine. The creep test device is characterized by comprising a motor (10) and a screw rod (19); the screw rod (19) is connected with a reversing rack mechanism (13) of the dead weight machine in a sliding manner; both the screw rod (19) and the reversing rack mechanism (13) are provided with matched limiting components, so as to limit the separation of the screw rod (19) and the reversing rack mechanism (13); the motor (10) is used for driving the screw rod (19); and once loading or unloading of creep test can be realized through the sliding connection of the screw rod (19) and the reversing rack mechanism (13) of the dead weight machine. The device can realize once quick loading/unloading during the creep test, so as to serve as a hoisting device for the initial loading and final loading of the creep test; and the device can also avoid overlarge force value fluctuation and abate the adhesion, thereby further improving the accuracy of the creep test.
Description
Technical field
The utility model relates to creep test device, particularly a kind of creep test device of dead weight machine.
The utility model also 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 utility model 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 utility model is taked 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.
Preferably, the limiting component on the described screw rod is the teat that is positioned on the described screw rod.
Preferably, described reverse frame mechanism comprises cutting ferrule, and described cutting ferrule comprises a chute and be positioned at the Access Division of chute end that described Access Division forms the limiting component of described reverse frame mechanism.
Preferably, also be provided with at least two pilot holes on the described reverse frame mechanism, described creep test device also has at least two guide poles that are used with described at least two pilot holes.
Preferably, described at least two guide poles are fixed on the crossbeam of described dead weight machine.
The purpose of this utility model also is 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 the technical solution of the utility model 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201375596U CN201803901U (en) | 2010-03-23 | 2010-03-23 | Dead weight machine and creep test device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201375596U CN201803901U (en) | 2010-03-23 | 2010-03-23 | Dead weight machine and creep test device thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN201803901U true CN201803901U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201375596U Expired - Fee Related CN201803901U (en) | 2010-03-23 | 2010-03-23 | Dead weight machine and creep test device thereof |
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| CN (1) | CN201803901U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929932A (en) * | 2010-03-23 | 2010-12-29 | 昆山市创新科技检测仪器有限公司 | Creep test device |
| CN110208306A (en) * | 2019-06-24 | 2019-09-06 | 天津旭迪聚氨酯保温防腐设备有限公司 | A kind of croop property detection device of polyurethane plastics |
-
2010
- 2010-03-23 CN CN2010201375596U patent/CN201803901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929932A (en) * | 2010-03-23 | 2010-12-29 | 昆山市创新科技检测仪器有限公司 | Creep test device |
| CN101929932B (en) * | 2010-03-23 | 2012-11-07 | 昆山市创新科技检测仪器有限公司 | Creep test device |
| CN110208306A (en) * | 2019-06-24 | 2019-09-06 | 天津旭迪聚氨酯保温防腐设备有限公司 | A kind of croop property detection device of polyurethane plastics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20160323 |