CN201107137Y - Hydraulic type force measuring apparatus - Google Patents
Hydraulic type force measuring apparatus Download PDFInfo
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- CN201107137Y CN201107137Y CNU2007200743692U CN200720074369U CN201107137Y CN 201107137 Y CN201107137 Y CN 201107137Y CN U2007200743692 U CNU2007200743692 U CN U2007200743692U CN 200720074369 U CN200720074369 U CN 200720074369U CN 201107137 Y CN201107137 Y CN 201107137Y
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Abstract
The utility model discloses a hydraulic dynamometer, which comprises an acting force bearing part and a pressure sensing measurement part. The acting force bearing part comprises a sealing element, a piston, an oil cylinder shell, a locking and adjusting element and hydraulic oil; the sealing element is arranged between the piston and the oil cylinder shell; the locking and adjusting element is fixedly arranged on the oil cylinder shell; the pressure sensing measurement part comprises a pressure sensor, a cable and a display control instrument; the receiving terminal of the pressure sensor is connected with the oil cylinder shell; the output end of the pressure sensor is connected with the display control instrument through the cable. The hydraulic dynamometer has convenient and flexible design, production and use, and higher reachability of the acting force measurement.
Description
Technical field
The utility model relates to a kind of device for measuring force, particularly a kind of fluid pressure type device for measuring force.
Background technology
Thereby the electronics device for measuring force is to insert axis that stressed sensitive element becomes force sensor, force sensor to rigidly fix and connect the corresponding control instrument that shows by cable along the direction of tested acting force and determine the numerical value of measurand in elastic body traditionally.In this device for measuring force, the acting force that sensor bears should be equal to measurand in theory fully, and force sensor need be numerous specification and shapes according to the size design of measurand just for this reason.This device for measuring force has very high precision.But in industrial automation equipment, this device for measuring force have good linearity and repeatable accuracy usually head and shoulders above the precision that other machinery, hydraulic pressure, Pneumatic component may reach in the system, also head and shoulders above product process needed accuracy rating requirement.At this moment, the too much force sensor of specification makes troubles for design, manufacturing and the use of equipment.
The force sensor of conditional electronic device for measuring force needs special manufacturing usually thereby has the shape of rule, and axis must overlap, rigidly fix, directly bear whole acting forces with the direction of tested acting force, so this has just limited the usable range of force sensor.
Detecting the horizontal zone reliable method whether someone stands at present is photoelectric technology, if this horizontal zone has the border of simple rule, the safety component of the method correspondence is a grating; If this horizontal zone has irregular border, the safety component of the method correspondence is a laser scanner, laser scanner drives generating laser and the horizontal high speed rotating of laser receptacle with motor, and the laser receptacle checks that whether the light of generating laser is in this regional reflex.Grating or laser scanner generally all adopt complicated electronic circuit, so the self check of the too busy to get away complicated hardware software of its reliably working and inspection mutually, and high-grade grating or laser scanner usually are expensive; No matter grating or laser scanner are because therefore the optical principle of its work aspect usually can cause the signal mistake to be sent out owing to the reason of vibration, dust or fiber fines.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of easy to use, response fast, acting force detects the high fluid pressure type device for measuring force of accessibility.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of fluid pressure type device for measuring force, this device comprises acting force and bears part and pressure sensing measure portion, its described acting force bears part and comprises seal element, piston, cylinder shell, locking and adjustment element and hydraulic oil, between described piston and the described cylinder shell seal element is housed, described locking is fixedly mounted on the cylinder shell with adjusting element, is straight-through tensile force type between its described piston and the cylinder shell; Described pressure sensing measure portion comprises pressure transducer, cable, shows control instrument, and the receiving terminal of pressure transducer directly is fixedly connected on the cylinder shell, and output terminal is connected with the demonstration control instrument by cable.
In the utility model, the receiving terminal of described pressure transducer is installed on the cylinder shell by a coupling arrangement; Described coupling arrangement comprises oil pipe and joint, and described joint is fixedly mounted on the cylinder shell, and described oil pipe one end is directly installed on the joint, and the other end links to each other with pressure transducer.
In the utility model, a stop valve is housed at described oil pipe.
The utility model still can have very high linearity and repeatable accuracy, and the acting force in the external world of reflection in time, finishes the purpose that acting force is measured.This utility model since seal element, piston, oil cylinder, locking and adjustment element etc. all comparatively cheapness, be easy to make or be easy to and obtain, and the sensor of device for measuring force just can obtain unifiedly, so just can bring convenience for design, manufacturing and the use of equipment.
In the utility model, bearing of the perception of power and tested acting force can separate, piston and oil cylinder bear element and can be processed to special shape according to concrete needs as tested acting force, so the utility model has improved the accessibility that acting force detects greatly.
The utility model also has structure advantage flexibly.Force cell need be selected according to range in Machine Tool design, and its overload rate is no more than 150%; It is complicated a lot of that but the actual condition that lathe uses is wanted, the nominal situation of considering when usually occurring being Machine Tool design, and at this moment lathe just is difficult to provide safeguard measure to general force cell, and therefore general force cell damages in actual use unavoidably.Then can provide safeguard measure to pressure transducer easily when in Machine Tool design, using the fluid pressure type device for measuring force; promptly in the oil pipe of pressure transducer, add a stop valve; just can open under the nominal situation that this stop valve is only considered when Machine Tool design; and be in closed condition under the rest working conditions, so pressure transducer just can not damage.
Whether the someone stands to can be used to detect a horizontal zone at industrial circle the utility model; each employee's weight is all at least more than 210N; for the safeguard protection zone that will implement; can adopt along this region geometry center the 3 cover fluid pressure type device for measuring force that evenly distribute to support and the steel plate of this zone in congruence aspect the geometric shape; set its with the normally opened contact of electronic pressure switch stressedly play switching signal during at 70N and switch to closure in that piston is newly-increased; the signal of these 3 groups of electronic pressure switch formed signal parallel with one another has just been judged this horizontal zone, and whether the someone stands: closed representative has the people to stand on steel plate, disconnects and represents nobody to stand on steel plate.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of the utility model fluid pressure type device for measuring force embodiment 1.
Fig. 2 is the structural representation of the utility model fluid pressure type device for measuring force embodiment 2.
Fig. 3 is the structural representation of the utility model fluid pressure type device for measuring force embodiment 3.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment 1:
Fluid pressure type device for measuring force shown in this embodiment is the through type device for pressure measurement, and it comprises that acting force bears part and pressure sensing measure portion, as shown in Figure 1.
Acting force bears part and comprises seal element 1a, piston 2a, cylinder shell 4a, locking and adjust element 3a, hydraulic oil 9a etc.Piston 2a, cylinder shell 4a, hydraulic oil 9a etc. bear external influence power, and locking fixedly mounts on cylinder shell 4a with adjusting element 3a, has therefore stoped piston 2a to isolate cylinder shell 4a.
Consider between seal element 1a and the cylinder shell 4a to have axial stiction, and the possible both direction that axial friction force itself has numerically has the upper limit, upward size is uncertain in limited time but be lower than.Locking and adjustment element 3a adjust setting to the stiction between seal element 1a and the cylinder shell 4a simultaneously, so that stiction reaches the upper limit, direction is that axis is inside, at this moment hydraulic oil 9a has certain beginning pressure that opens, and this opens beginning pressure and shows that at follow-up pressure measure portion is defined as zero point.When ambient pressure Na existed, linear change correspondingly took place in the pressure of hydraulic oil 9a, and its hydraulic oil 9a is because the effect of the pressure Na coupling arrangement by the pressure sensing measure portion enters pressure transducer 8a.
The pressure sensing measure portion comprises pressure transducer 8a, cable 7a, shows control instrument 6a, pressure transducer 8a is directly installed on the cylinder shell 4a by a joint 5a, the internal pressure of perception hydraulic oil 9a is sent to demonstration control instrument 6a with its electric signal by cable 7a.Show that control instrument 6a carries out numerical value for ambient pressure and shows, and/or output switching signal is to last level controlling system.When only needing the switching signal of spot pressure, pressure transducer 8a can directly be a pressure switch just.
The device for pressure measurement of this kind structure has and responds advantage fast.
Embodiment 2:
The fluid pressure type device for measuring force of this embodiment is the device for pressure measurement that has oil pipe, and it comprises that acting force bears part and pressure sensing measure portion, as shown in Figure 2.
Acting force bears part and comprises seal element 1b, piston 2b, cylinder shell 4b, locking and adjust element 3b, hydraulic oil 9b etc.Piston 2b, cylinder shell 4b, hydraulic oil 9b etc. bear external influence power, and locking fixedly mounts on cylinder shell 4b with adjusting element 3b, has therefore stoped piston 2b to isolate cylinder shell 4b.
Consider between seal element 1b and the cylinder shell 4b to have axial stiction, and the possible both direction that axial friction force itself has numerically has the upper limit, upward size is uncertain in limited time but be lower than.Locking and adjustment element 3b adjust setting to the stiction between seal element 1b and the cylinder shell 4b simultaneously, so that stiction reaches the upper limit, direction is that axis is inside, at this moment hydraulic oil 9b has certain beginning pressure that opens, and this opens beginning pressure and shows that at follow-up pressure measure portion is defined as zero point.When ambient pressure Nb existed, linear change correspondingly took place in the pressure of hydraulic oil 9b, and its hydraulic oil 9b is because the effect of the pressure Nb coupling arrangement by the pressure sensing measure portion enters pressure transducer 8b.
The pressure sensing measure portion comprises pressure transducer 8b, cable 7b, shows control instrument 6b and coupling arrangement.Oil pipe 10b is directly installed on the joint 5b on the cylinder shell 4b in the coupling arrangement, and the internal pressure of hydraulic oil 9b is transferred to pressure transducer 8b, and the perception electric signal of pressure transducer 8b is sent to by cable 7b and shown control instrument 6b.Show that control instrument 6b carries out numerical value for ambient pressure and shows, and/or output switching signal is to last level controlling system.When only needing the switching signal of spot pressure, pressure transducer 8b can directly be a pressure switch just.
In the device for pressure measurement of this kind structure acting force bear the part requirements of installation space not high; so can in the middle of oil pipe, add parts such as stop valve 11b; just can open under the nominal situation that this stop valve 11b only considers when Machine Tool design, thus protection pressure transducer 8b.
Embodiment 3:
The fluid pressure type device for measuring force of this embodiment is the through type tension measuring device, and it comprises that acting force bears part and pressure sensing measure portion, as shown in Figure 3.
Acting force bears part and comprises seal element 1c, piston 2c, cylinder shell 4c, locking and adjust element 3c, hydraulic oil 9c etc.Piston 2c, cylinder shell 4c, hydraulic oil 9c etc. bear external influence power, and locking fixedly mounts on cylinder shell 4c with adjusting element 3c, has therefore stoped piston 2c to isolate cylinder shell 4c.
Consider between seal element 1c and the cylinder shell 4c to have axial stiction, and the possible both direction that axial friction force itself has numerically has the upper limit, upward size is uncertain in limited time but be lower than.Locking and adjustment element 3c adjust setting to the stiction between seal element 1c and the cylinder shell 4c simultaneously, so that stiction reaches the upper limit, direction is that axis is inside, at this moment hydraulic oil 9c has certain beginning pressure that opens, and this opens beginning pressure and shows that at follow-up pressure measure portion is defined as zero point.When external tensile force F existed, linear change correspondingly took place in the pressure of hydraulic oil 9c, and its hydraulic oil 9c is because the effect of the pressure Nc coupling arrangement by the pressure sensing measure portion enters pressure transducer 8c.
The pressure sensing measure portion comprises pressure transducer 8c, cable 7c and shows control instrument 6c.Pressure transducer 8c is directly installed on the cylinder shell 4c, and the internal pressure of perception hydraulic oil 9c is sent to demonstration control instrument 6c with its electric signal by cable 7c.Show that control instrument 6c carries out numerical value for ambient pressure and shows, and/or output switching signal is to last level controlling system.When only needing the switching signal of spot pressure, pressure transducer 8c can directly be a pressure switch just.
The through type tension measuring device can increase joint, oil pipe equally, becomes the tension measuring device that has oil pipe.
More than be of the present utility model three routine embodiments,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize the purpose of this utility model equally for those skilled in the art.But this variation obviously should be in the protection domain of claims of the present utility model.
Claims (5)
1. fluid pressure type device for measuring force, this device comprises acting force and bears part and pressure sensing measure portion, it is characterized in that: described acting force bears part and comprises seal element, piston, cylinder shell, locking and adjustment element and hydraulic oil, between piston and the cylinder shell seal element is housed, locking is fixedly mounted on the cylinder shell with the adjustment element; Described pressure sensing measure portion comprises pressure transducer, cable, shows control instrument, and the receiving terminal of described pressure transducer is connected with cylinder shell, and output terminal is connected with the demonstration control instrument by cable.
2. a kind of fluid pressure type device for measuring force according to claim 1 is characterized in that: be straight-through tensile force type between described piston and the cylinder shell.
3. a kind of fluid pressure type device for measuring force according to claim 1, it is characterized in that: the receiving terminal of described pressure transducer is fixedly mounted on the cylinder shell by a joint.
4. a kind of fluid pressure type device for measuring force according to claim 1 is characterized in that: the receiving terminal of described pressure transducer is by on a coupling arrangement and the described cylinder shell; Described coupling arrangement comprises oil pipe and joint, and its oil pipe one end is directly installed on the joint, and the other end links to each other with pressure transducer.
5. a kind of fluid pressure type device for measuring force according to claim 4 is characterized in that: a stop valve is housed in the described oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200743692U CN201107137Y (en) | 2007-09-04 | 2007-09-04 | Hydraulic type force measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200743692U CN201107137Y (en) | 2007-09-04 | 2007-09-04 | Hydraulic type force measuring apparatus |
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| Publication Number | Publication Date |
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| CN201107137Y true CN201107137Y (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200743692U Expired - Fee Related CN201107137Y (en) | 2007-09-04 | 2007-09-04 | Hydraulic type force measuring apparatus |
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| CN (1) | CN201107137Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782485A (en) * | 2010-01-31 | 2010-07-21 | 常州亿晶光电科技有限公司 | Static pressure testing device of solar cell assembly |
| CN101943616A (en) * | 2010-09-03 | 2011-01-12 | 山东理工大学 | Extrusion force tester for pug mill |
| CN103091028A (en) * | 2012-12-31 | 2013-05-08 | 苏州维赛克阀门检测技术有限公司 | Safety valve on-line monitoring system |
| CN104390736A (en) * | 2014-11-11 | 2015-03-04 | 山东科技大学 | Drilling cutting method intelligent detection system |
| CN106405059A (en) * | 2016-11-28 | 2017-02-15 | 安徽理工大学 | Concrete jet impact test bed |
-
2007
- 2007-09-04 CN CNU2007200743692U patent/CN201107137Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782485A (en) * | 2010-01-31 | 2010-07-21 | 常州亿晶光电科技有限公司 | Static pressure testing device of solar cell assembly |
| CN101782485B (en) * | 2010-01-31 | 2013-12-18 | 常州亿晶光电科技有限公司 | Static pressure testing device of solar cell assembly |
| CN101943616A (en) * | 2010-09-03 | 2011-01-12 | 山东理工大学 | Extrusion force tester for pug mill |
| CN103091028A (en) * | 2012-12-31 | 2013-05-08 | 苏州维赛克阀门检测技术有限公司 | Safety valve on-line monitoring system |
| CN104390736A (en) * | 2014-11-11 | 2015-03-04 | 山东科技大学 | Drilling cutting method intelligent detection system |
| CN106405059A (en) * | 2016-11-28 | 2017-02-15 | 安徽理工大学 | Concrete jet impact test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20091009 |