CN105157916A - Electric cylinder and hydraulic cylinder combination loading build-up force standard machine - Google Patents
Electric cylinder and hydraulic cylinder combination loading build-up force standard machine Download PDFInfo
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- CN105157916A CN105157916A CN201510252773.3A CN201510252773A CN105157916A CN 105157916 A CN105157916 A CN 105157916A CN 201510252773 A CN201510252773 A CN 201510252773A CN 105157916 A CN105157916 A CN 105157916A
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Abstract
The invention discloses an electric cylinder and hydraulic cylinder combination loading build-up force standard machine, which comprises an oil cylinder, a piston, an electric cylinder, a large sensor and a small sensor. A piston ascending oil hole and a piston descending oil hole are disposed in the wall of the oil cylinder. The piston is disposed in the oil cylinder and vertically movable in the oil cylinder. The electric cylinder is disposed in the piston. The large sensor is disposed at the top of the piston. The small sensor is connected with an output end of the electric cylinder. A guide tray is further disposed between the small sensor and the electric cylinder. According to the invention, the electric cylinder drives the guide tray to move upward so that the small sensor can move upward in the piston to apply a loading force to a connecting tray for measuring a small range; the oil enters into the space between the oil cylinder and the bottom of the piston so that the large sensor can move upward in the oil cylinder to apply a loading force to the connecting tray for measuring a large range; and both the large range and the small range can be measured, the operation is easy, and as the small sensor ensures the stability of the small range measurement, the measuring accuracy is improved.
Description
Technical field
The present invention relates to one, be specifically related to a kind of electric cylinder and hydraulic cylinder combination loading superposing type force standard machine.
Background technology
LOAD CELLS, load sensor are widely used in design department, machinery, electron trade, metallurgy, national defence and building trade in recent years.Developing rapidly of various sensor production and use, is badly in need of metrological service and detects comprehensively and accurately it, and provides consistent technical indicator reliably.For this reason, China has built various types of force standard machines.
Force standard machines be employing one the proof force sensor higher than accredited dynamometer accuracy as standard, connect with the force snesor being calibrated/examining and determine, the force standard machines loaded with hydraulic pressure or mechanical system; Because it is cheap, work efficiency is high, be widely used in the mechanics properties testing of various LOAD CELLS, force snesor, dynamometer in recent years.But superposing type force standard machine depends critically upon its standard transducer used, standard transducer is unstable when measuring small-range, measuring accuracy is low, for head it off, current way is in measuring process, change the standard transducer of small-range, and does not only troublesome poeration like this, cannot continuous coverage, and small-range standard transducer is used on large tank piston, also easily cause damage.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of electric cylinder and hydraulic cylinder combination loading superposing type force standard machine.
In order to achieve the above object, technical scheme of the present invention is as follows:
The invention provides a kind of electric cylinder and hydraulic cylinder combination loading superposing type force standard machine, comprising:
Oil cylinder, the wall body of oil cylinder is provided with piston rising oilhole and piston decline oilhole;
Piston, it to be arranged in oil cylinder and to move up and down setting in oil cylinder;
Electric cylinder, it is arranged in piston;
Large sensor, it is arranged at top land, is provided with connecting trays between large sensor and piston;
Little sensor, it is connected with the output terminal of electric cylinder and is positioned at the top of electric cylinder, is also provided with guiding pallet between little sensor and electric cylinder, and the surrounding of guiding pallet contacts with the inwall of piston respectively and is connected.
In the present invention, electric cylinder drives guiding pallet to move up, and little sensor is moved up in piston and applies a loading force for measuring small-range to connecting trays, now piston and large sensor do not work; Fluid enters in the space between oil cylinder and piston base from piston rising oilhole, large sensor is moved up in oil cylinder and applies a loading force for measuring wide range to connecting trays, now electric cylinder and little sensor do not work, compared to prior art, both can measure wide range, also can measure small-range, easy to operate, and little sensor ensures the stability of small-range test, improve the precision of test.
Piston above-mentioned in the present invention comprises connected piston crown and Piston connecting portion, the surrounding of piston crown is connected with the inner wall sealing ground of oil cylinder, Piston connecting portion is connected with connecting trays, be provided with piston decline oil-feed space between Piston connecting portion and the inwall of oil cylinder, piston decline oilhole is communicated with piston decline oil-feed space.
The bottom of piston crown above-mentioned in the present invention is provided with boss, and the large footpath size of boss is less than the large footpath size of piston crown.
On the basis of technique scheme, also can do following improvement:
As preferred scheme, be also provided with guiding connector, guiding connector to be arranged in piston and to be connected with guiding pallet.
Adopt above-mentioned preferred scheme, guiding connector ensures that on the one hand guiding pallet keeps level in moving process, and on the same line, guarantee wide range and small-range measured value one are made peace continuously for the axle center of the pallet that makes to lead and the axle center of piston; Avoid when pistons work little sensor and connecting trays to produce hard collision on the other hand, extend the serviceable life of little sensor.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Wherein, 10. oil cylinder, 20. pistons, 21. piston rising oilholes, 22. piston decline oilholes, 23. connecting trays, 30. electric cylinders, 31. guiding pallets, 40. large sensors, 50. little sensors, 60. guiding connectors.
Embodiment
The preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
In order to reach object of the present invention, as shown in Figure 1, in wherein a kind of embodiment of the present invention, provide a kind of electric cylinder and hydraulic cylinder combination to load superposing type force standard machine, comprising:
Oil cylinder 10, the wall body of oil cylinder 10 is provided with piston rising oilhole 21 and piston decline oilhole 22;
Piston 20, it to be arranged in oil cylinder 10 and to move up and down setting in oil cylinder 10;
Electric cylinder 30, it is arranged in piston 20;
Large sensor 40, it is arranged at piston 20 top, is provided with connecting trays 23 between large sensor 40 and piston 20;
Little sensor 50, it is connected with the output terminal of electric cylinder 30 and is positioned at the top of electric cylinder 30, is also provided with the pallet 31 that leads between little sensor 50 and electric cylinder 30, and the surrounding of guiding pallet 31 contacts with the inwall of piston 20 respectively and is connected.
In present embodiment, electric cylinder 30 drives guiding pallet 31 to move up, and little sensor 50 is moved up in piston 20 and applies a loading force for measuring small-range to connecting trays 23, now piston 20 and large sensor 40 do not work; In space between fluid enters bottom oil cylinder 10 and piston 20 from piston rising oilhole 21, piston 20 is moved up in oil cylinder and applies a loading force for measuring wide range to connecting trays 23, now electric cylinder 30 and little sensor 50 do not work, compared to prior art, both can measure wide range, also can measure small-range, easy to operate, and little sensor 50 ensures the stability that small-range is tested, improve the precision of test.
Piston 20 above-mentioned in present embodiment comprises connected piston crown and Piston connecting portion, the surrounding of piston crown is connected with the inner wall sealing ground of oil cylinder 10, Piston connecting portion is connected with connecting trays 23, be provided with piston decline oil-feed space between the inwall of Piston connecting portion and oil cylinder 10, piston decline oilhole 22 is communicated with piston decline oil-feed space.
The bottom of piston crown above-mentioned in present embodiment is provided with boss, and the large footpath size of boss is less than the large footpath size of piston crown.
As shown in Figure 2, in order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, be also provided with guiding connector 60, guiding connector 60 to be arranged in piston 20 and to be connected with guiding pallet 31.
Adopt above-mentioned preferred scheme, guiding connector 60 1 aspect ensures that guiding pallet 31 keeps level in moving process, and on the same line, guarantee wide range and small-range measured value one are made peace continuously in the axle center of axle center and the piston 20 of the pallet 31 that makes to lead; Avoid when piston 20 works little sensor 50 to produce hard collision with connecting trays 23 on the other hand, extend the serviceable life of little sensor 50
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (4)
1. electric cylinder and hydraulic cylinder combination load superposing type force standard machine, it is characterized in that, comprising:
Oil cylinder, the wall body of described oil cylinder is provided with piston rising oilhole and piston decline oilhole;
Piston, it to be arranged in described oil cylinder and to move up and down setting in described oil cylinder;
Electric cylinder, it is arranged in described piston;
Large sensor, it is arranged at described top land, is provided with connecting trays between described large sensor and described piston;
Little sensor, it is connected with the output terminal of described electric cylinder and is positioned at the top of described electric cylinder, is also provided with guiding pallet between described little sensor and described electric cylinder, and the surrounding of described guiding pallet contacts with the inwall of described piston respectively and is connected.
2. electric cylinder according to claim 1 and hydraulic cylinder combination load superposing type force standard machine, it is characterized in that, are also provided with guiding connector, and described guiding connector to be arranged in described piston and to be connected with described guiding pallet.
3. electric cylinder according to claim 1 and 2 and hydraulic cylinder combination load superposing type force standard machine, it is characterized in that, described piston comprises connected piston crown and Piston connecting portion, the surrounding of described piston crown is connected with the inner wall sealing ground of described oil cylinder, described Piston connecting portion is connected with described connecting trays, be provided with piston decline oil-feed space between the inwall of described Piston connecting portion and described oil cylinder, described piston decline oilhole is communicated with described piston decline oil-feed space.
4. electric cylinder according to claim 3 and hydraulic cylinder combination load superposing type force standard machine, and it is characterized in that, the bottom of described piston crown is provided with boss, and the large footpath size of described boss is less than the large footpath size of described piston crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252773.3A CN105157916A (en) | 2015-05-18 | 2015-05-18 | Electric cylinder and hydraulic cylinder combination loading build-up force standard machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252773.3A CN105157916A (en) | 2015-05-18 | 2015-05-18 | Electric cylinder and hydraulic cylinder combination loading build-up force standard machine |
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| Publication Number | Publication Date |
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| CN105157916A true CN105157916A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510252773.3A Pending CN105157916A (en) | 2015-05-18 | 2015-05-18 | Electric cylinder and hydraulic cylinder combination loading build-up force standard machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3917142C1 (en) * | 1989-05-26 | 1990-06-13 | A.M. Erichsen Gmbh, 5600 Wuppertal, De | Hydraulic force normal machine - has matching tap on end face of working piston exposed to pressure for fine balancing |
| CN2177937Y (en) * | 1993-10-26 | 1994-09-21 | 范春起 | Composite sensor for measuring force |
| CN101644610A (en) * | 2009-08-31 | 2010-02-10 | 内蒙古工业大学 | Pressure sensor |
| CN202346713U (en) * | 2011-11-26 | 2012-07-25 | 山河智能装备股份有限公司 | Buffering protection piston cylinder |
| CN102645303A (en) * | 2012-04-23 | 2012-08-22 | 苏州市计量测试研究所 | Cascade wide-range force loading and measuring device |
| CN103743512A (en) * | 2013-10-26 | 2014-04-23 | 内蒙古工业大学 | Pressure sensor with pretightening force |
| CN204964109U (en) * | 2015-05-18 | 2016-01-13 | 昆山市创新科技检测仪器有限公司 | Electronic jar and pneumatic cylinder combination loading stack formula force standard machine |
-
2015
- 2015-05-18 CN CN201510252773.3A patent/CN105157916A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3917142C1 (en) * | 1989-05-26 | 1990-06-13 | A.M. Erichsen Gmbh, 5600 Wuppertal, De | Hydraulic force normal machine - has matching tap on end face of working piston exposed to pressure for fine balancing |
| CN2177937Y (en) * | 1993-10-26 | 1994-09-21 | 范春起 | Composite sensor for measuring force |
| CN101644610A (en) * | 2009-08-31 | 2010-02-10 | 内蒙古工业大学 | Pressure sensor |
| CN202346713U (en) * | 2011-11-26 | 2012-07-25 | 山河智能装备股份有限公司 | Buffering protection piston cylinder |
| CN102645303A (en) * | 2012-04-23 | 2012-08-22 | 苏州市计量测试研究所 | Cascade wide-range force loading and measuring device |
| CN103743512A (en) * | 2013-10-26 | 2014-04-23 | 内蒙古工业大学 | Pressure sensor with pretightening force |
| CN204964109U (en) * | 2015-05-18 | 2016-01-13 | 昆山市创新科技检测仪器有限公司 | Electronic jar and pneumatic cylinder combination loading stack formula force standard machine |
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Application publication date: 20151216 |
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