CN203981346U - Routine test hydro-extractor is quiet-mobile equilibrium monitoring device - Google Patents
Routine test hydro-extractor is quiet-mobile equilibrium monitoring device Download PDFInfo
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- CN203981346U CN203981346U CN201420432692.2U CN201420432692U CN203981346U CN 203981346 U CN203981346 U CN 203981346U CN 201420432692 U CN201420432692 U CN 201420432692U CN 203981346 U CN203981346 U CN 203981346U
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Abstract
The utility model discloses a kind of routine test hydro-extractor quiet-mobile equilibrium monitoring device, routine test hydro-extractor comprises pivoted arm, pivoted arm supporting and support, pivoted arm comprises jib and is installed on respectively experimental cabin and the balancing weight at jib two ends, jib comprises two thrust axis that are parallel to each other, between two thrust axis, be fixedly connected with by multiple locating rings, working end and the counterweight end of the bottom surface of pivoted arm supporting are respectively provided with one group of bearing, and a rocker-type sensor is installed in each bearing; On thrust axis, be separately installed with one group of sensor holder near the position of working end and the position of counterweight end of pivoted arm supporting center, a pressure transducer is installed in each sensor holder, the force side of pressure transducer and the corresponding contact of pivoted arm supporting.Real-Time Monitoring is carried out in static weight and mobile equilibrium that the utility model utilizes rocker-type sensor and pressure transducer to realize respectively the pivoted arm to routine test hydro-extractor, has improved the security of routine test hydro-extractor operation.
Description
Technical field
The utility model relates to a kind of balance monitoring device of routine test hydro-extractor, relate in particular to a kind of routine test hydro-extractor quiet-mobile equilibrium monitoring device.
Background technology
Large-scale routine test hydro-extractor is widely used in science and techniques of defence research and field of aerospace technology, in order to carry out overload examination or load simulated test.Such hydro-extractor has the not isometric pivoted arm structure in left and right, long arm end is working end, installation test cabin or shaking table, galianconism end is counterweight end, fixed weight or moveable counter weight are installed, counterweight, in order to keep whole pivoted arm about rotation center axis equalising torque, is under loading condition, to make pivoted arm barycenter pass through shaft axis.But, in different tests, testpieces and frock clamp quality thereof and contour structures difference to some extent, the error simultaneously regulating due to static balancing, is difficult to proof load pivoted arm barycenter and crosses shaft axis, that is to say that imbalance all exists conventionally; In addition, human error causes pivoted arm imbalance also to exist.Due to not reliably, means of testing intuitively, the static unbalance of pivoted arm is often unknown by the people, in process of the test, out-of-balance force often becomes static tens times of hundred times even along with overloading acceleration raises, larger out-of-balance force will produce vibration, bring potential safety hazard, jeopardize personnel and device security.
In order to overcome the problems referred to above as far as possible, traditional scheme has adopted the graduated Steel Ruler of counterweight end mounting strap at pivoted arm conventionally, judges whether static balancing of pivoted arm by the distortion of Steel Ruler; In geotechnical centrifuge, only can in hydro-extractor operational process, monitor dynamic unbalance power by setting pressure force cell; Or again, the device of any molecular balance situation is not set, only judges the equilibrium condition of pivoted arm by theoretical calculation.
These modes exist method comparatively original, monitor not accurate enough, to be difficult to intuitively and accurately obtain amount of unbalance problem.Be embodied in:
Observe it be out of shape to judge that statically balanced method is too coarse by the method for Steel Ruler is installed on pivoted arm, can not accurately judge pivoted arm equilibrium state; The dynamic monitoring method of using on geotechnical centrifuge is only to react dynamic unbalance power situation, this device can not be judged equipoise, only have and first adopt theory to try balancing, then after hydro-extractor rotates to certain rotating speed, judge that by dynamic monitoring data trim is whether in allowed band, if not at tolerance band, also need to shut down static trim again, increase experiment work amount; Balance detecting device is not set, judges amount of unbalance by the method for theoretical calculation, first due to practical structures more complicated and changeable, calculate inconvenience, estimation is also inaccurate in addition.
Utility model content
The purpose of this utility model be just to provide in order to address the above problem a kind of can precise monitoring and show in real time the routine test hydro-extractor of amount of unbalance quiet-mobile equilibrium monitoring device.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of routine test hydro-extractor is quiet-mobile equilibrium monitoring device, described routine test hydro-extractor comprises pivoted arm, pivoted arm supporting and support, described pivoted arm comprises jib and is installed on respectively experimental cabin and the balancing weight at described jib two ends, described jib comprises two thrust axis that are parallel to each other, between two described thrust axis, be fixedly connected with by multiple locating rings, described pivoted arm supporting is provided with cross through hole, described thrust axis is realized and being connected that described pivoted arm supports through described cross through hole, described pivoted arm supporting makes described thrust axis move at axial direction (being also the axial direction of pivoted arm) trace between adjacent two described locating rings, the center of described pivoted arm supporting is provided with the supporting mounting hole of vertical direction, described pivoted arm supporting is placed in the top of described support, the main shaft of described support is upward through described supporting mounting hole and drives described pivoted arm supporting rotation, on the axial direction of described thrust axis, taking the center correspondence position of described supporting mounting hole as mid point, be working end near one end of described experimental cabin, be counterweight end near one end of described balancing weight, working end and the counterweight end of the bottom surface of described pivoted arm supporting are respectively provided with one group of bearing, and a rocker-type sensor for detection of gravity is installed in bearing described in each, and the dynamometry end of described rocker-type sensor contacts with the lower surface of described thrust axis, between the top of described cross through hole and the end face of described thrust axis, between the bottom of described cross through hole and the bottom surface of described thrust axis, all have a distance of 1-3mm, the position of working end and the position of counterweight end near described supporting mounting hole on described thrust axis are separately installed with one group of sensor holder, a pressure transducer is installed, the force side of described pressure transducer and the corresponding contact of described pivoted arm supporting in each described sensor holder, the signal output part of described rocker-type sensor and the signal output part of described pressure transducer respectively with corresponding connection of signal input part of monitor.
In said structure, thrust axis is less than the size at vertical direction at cross through hole in the size of vertical direction, both the weight of having guaranteed static Measurement accuracy pivoted arm and corresponding component is feasible technically, also for kinetic measurement provides movably trend, otherwise, if thrust axis and cross through hole are at vertical direction close contact, because the deadweight of pivoted arm has tens tons, friction force can be very large, under out-of-balance force effect, first want overcome friction, ability squeeze pressure sensor, the dynamic force measuring is like this just inaccurate, larger friction force may be ground wound by recurring structure simultaneously, dynamic force measurement is unfeasible, rocker-type sensor in two groups of bearings is monitored respectively the working end of pivoted arm supporting and the gravity of counterweight end, wherein, the gravity of the working end of pivoted arm supporting comprises that pivoted arm supporting central point is near the pivoted arm supporting of working end and the gravity sum of pivoted arm, and the gravity of the counterweight end of pivoted arm supporting comprises that pivoted arm supporting central point is near the pivoted arm supporting of counterweight end and the gravity sum of pivoted arm, the gravity of two groups of rocker-type Sensor monitorings is compared, can know whether balance of working end and counterweight end, thereby realize the orthostatic object of monitoring routine test hydro-extractor, two groups of pressure transducers are propped up and are honoured thrust axis and carry out spacingly by pivoted arm, are equivalent to pivoted arm to carry out spacing, ensure that it can not be subjected to displacement under centrifugal action, in service at equipment, the difference of the pressure transducer institute measured value of working end and counterweight end, characterize the transient equilibrium situation of system, as numerical value is zero or is close to zero, system is balance, difference is larger, and the dynamic unbalance power that illustrative system exists is just larger, thereby has realized the object of monitoring routine test hydro-extractor mobile equilibrium.Monitor can be instrument, computing machine, signal processor etc.
Between the bottom of described cross through hole and the bottom surface of described thrust axis, all there is particularly, between the top of described cross through hole and the end face of described thrust axis, the distance of 1.5mm.
Preferably, described in every group, bearing comprises two described bearings, and four described bearings are installed on respectively four jiaos of bottom surface of described pivoted arm supporting.
For the ease of sensor installation seat, the both sides that described pivoted arm is bearing in the stage casing of the axial direction of described thrust axis are respectively equipped with breach, described sensor holder is placed in described breach, the corresponding contact of breach inner face that support with described pivoted arm the force side of described pressure transducer.
Preferably, described in every group, sensor holder comprises two described sensor holders, wherein one group two described sensor holders are installed on the both sides that are positioned at the upper surface of the working end of described supporting mounting hole on described thrust axis, and two described sensor holders of another group are installed on the both sides of the upper surface of the counterweight end that is positioned at described supporting mounting hole on described thrust axis.
The beneficial effects of the utility model are:
Real-Time Monitoring is carried out in static weight and mobile equilibrium that the utility model utilizes rocker-type sensor and pressure transducer to realize respectively the pivoted arm to routine test hydro-extractor, and the two measurement result is proved mutually, has improved the security of routine test hydro-extractor operation.Be embodied in:
1, static weighing scenario-frame is simple, it is directly perceived, convenient that data read, utilize basic Principles of Statics, static weighing structure is arranged on pivoted arm supporting above, and rocker-type sensor contacts with pivoted arm, and vertical direction is installed, structure easily realizes, compared with routine test centrifuge structure in the past, do not change agent structure, only a local architecture advances can realize static weighing; And in conventional art, static weighing device is not often set, and just understand the static unbalance situation of system by theoretical calculation, exist the error of calculation will cause accurately carrying out static trim.
2, static weighing device, for the realization of kinetic measurement out-of-balance force provides mobile trend, has ensured the feasible of kinetic measurement out-of-balance force; Meanwhile, replace plane rolling body structure in the past with static weighing device, reduced machining amount and difficulty of processing, saved cost.
Brief description of the drawings
Fig. 1 be comprise described in the utility model quiet-front view of the routine test hydro-extractor of mobile equilibrium monitoring device, in figure, there is no rotating shaft;
Fig. 2 be comprise described in the utility model quiet-stereographic map of the routine test hydro-extractor of mobile equilibrium monitoring device, in figure, removed support;
Fig. 3 be comprise described in the utility model quiet-partial perspective view of the routine test hydro-extractor of mobile equilibrium monitoring device, emphasis illustrate described quiet-structure of mobile equilibrium monitoring device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, shown in Fig. 2 and Fig. 3, routine test hydro-extractor described in the utility model is quiet-mobile equilibrium monitoring device in, described routine test hydro-extractor comprises pivoted arm 1, pivoted arm supporting 2 and support 3, pivoted arm 1 comprises jib and is installed on respectively experimental cabin 11 and the balancing weight 14 at described jib two ends, described jib comprises two thrust axis that are parallel to each other 12, between two thrust axis 12, be fixedly connected with by multiple locating rings 13, pivoted arm supporting 2 is provided with cross through hole (unmarked in figure), thrust axis 12 passes being connected of cross through hole realization and pivoted arm supporting 2, pivoted arm supporting 2 makes thrust axis 12 move at axial direction trace between adjacent two locating rings 13, (approximately 100mm left and right) is mobile, the center of pivoted arm supporting 2 is provided with the supporting mounting hole (unmarked in figure) of vertical direction, pivoted arm supporting 2 is placed in the top of support 3, the main shaft 4 of support 3 is upward through supporting mounting hole and drives pivoted arm supporting 2 rotations, on the axial direction of thrust axis 12, taking the center correspondence position that supports mounting hole as mid point, be working end near one end of experimental cabin 11, be counterweight end near one end of balancing weight 14, working end and the counterweight end of the bottom surface of pivoted arm supporting 2 are respectively provided with one group of bearing 5, every group of bearing 5 comprises two bearings 5, four bearings 5 are installed on respectively four jiaos of bottom surface of pivoted arm supporting 2, a rocker-type sensor (not shown) for detection of gravity is installed in each bearing 5, and the dynamometry end of rocker-type sensor contacts with the lower surface of thrust axis 12, between the end face of the top of cross through hole and thrust axis 12, between the bottom of cross through hole and the bottom surface of thrust axis 12, all have the distance of 1.5mm, can be also other distance in 1-3mm, the both sides in the stage casing of pivoted arm supporting 2 axial directions at thrust axis 12 are respectively equipped with breach 6, on thrust axis 12 in breach 6, be separately installed with one group of sensor holder 7 near the position of working end and the position of counterweight end of supporting mounting hole, every group of sensor holder 7 comprises two sensor holders 7, wherein one group two sensor holders 7 are installed on the both sides that are positioned at the upper surface of the working end of supporting mounting hole on thrust axis 12, two sensor holders 7 of another group are installed on the both sides that are positioned at the upper surface of the counterweight end of supporting mounting hole on thrust axis 12, a pressure transducer (not shown) is installed in each sensor holder 7, the corresponding contact of inner face of the breach 6 of the force side of pressure transducer and pivoted arm supporting 2, the signal output part of rocker-type sensor and the signal output part of pressure transducer respectively with corresponding connection of signal input part of monitor (not shown), monitor can be intelligent instrument, supervisory control comuter etc.
For the ease of regulating, can also on sensor holder 7, regulating device be set, for regulating the relative position of sensor holder 7 on thrust axis 12, this regulating device is conventional structure, as adopted screw rod to regulate, is not described specifically at this.
As shown in Figure 1, Figure 2 and Figure 3, routine test hydro-extractor described in the utility model quiet-principle of work of mobile equilibrium monitoring device is as follows:
Routine test centrifuge treating is in the time of static state, the general assembly (TW) of pivoted arm supporting 2 and pivoted arm 1 (comprising experimental cabin 11 and balancing weight 14) all puts on support 3 by four bearings 5, and this general assembly (TW) of rocker-type sensor Real-Time Monitoring in bearing 5 is also transferred to monitor by signal and shows.Compare by the corresponding weight information to each rocker-type sensor, whether the weight that also can understand to a certain extent working end and counterweight end is consistent, for there be can adjusting of significant difference before test, change the weight of balancing weight 14, the weight that as far as possible realizes two ends is consistent, reaches equilibrium state.
Routine test centrifuge treating is in the time of running status, and main shaft 4 rotarily drives pivoted arm supporting 2 rotation together, because pivoted arm supporting 2 is set on thrust axis 12, so drive thrust axis 12 to rotate together.If there is the situation of dynamic unbalance, thrust axis 12 can be to working end or counterweight end suitably move, will exert pressure to the wherein sensor holder 7 of one end and in-built pressure transducer like this, cause the output signal of corresponding pressure transducer to increase, this signal is transferred to monitor and shows.Like this staff just can Real-Time Monitoring routine test hydro-extractor dynamic balance state when operation.The moving axially distance and can be subject to the restriction of two kinds of structures of thrust axis 12: the sensor holder 9 that one is two ends and in-built pressure transducer spacing, it is two for being installed on the limited block 15 of side of thrust axis 12.These two kinds of structures can change spacing distance as required, in any case but can guarantee not off center position too much of thrust axis 12 and whole pivoted arm 1, thereby guarantee security of operation.
Above-described embodiment is preferred embodiment of the present utility model, be not the restriction to technical solutions of the utility model, such as: the distance between the top of cross through hole and the end face of thrust axis 12, between the bottom of cross through hole and the bottom surface of thrust axis 12 can also change as required; The quantity of the quantity of bearing 5 and in-built rocker-type sensor, sensor holder 7 and in-built pressure transducer all can change, as change 6 or 8 into can; As long as the technical scheme that can realize on the basis of above-described embodiment without creative work, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (5)
- A routine test hydro-extractor quiet-mobile equilibrium monitoring device, described routine test hydro-extractor comprises pivoted arm, pivoted arm supporting and support, described pivoted arm comprises jib and is installed on respectively experimental cabin and the balancing weight at described jib two ends, described jib comprises two thrust axis that are parallel to each other, between two described thrust axis, be fixedly connected with by multiple locating rings, described pivoted arm supporting is provided with cross through hole, described thrust axis is realized and being connected that described pivoted arm supports through described cross through hole, described pivoted arm supporting makes described thrust axis move at axial direction trace between adjacent two described locating rings, the center of described pivoted arm supporting is provided with the supporting mounting hole of vertical direction, described pivoted arm supporting is placed in the top of described support, the main shaft of described support is upward through described supporting mounting hole and drives described pivoted arm supporting rotation, on the axial direction of described thrust axis, taking the center correspondence position of described supporting mounting hole as mid point, be working end near one end of described experimental cabin, be counterweight end near one end of described balancing weight, it is characterized in that: working end and the counterweight end of the bottom surface of described pivoted arm supporting are respectively provided with one group of bearing, a rocker-type sensor for detection of gravity is installed in bearing described in each, and the dynamometry end of described rocker-type sensor contacts with the lower surface of described thrust axis, between the top of described cross through hole and the end face of described thrust axis, between the bottom of described cross through hole and the bottom surface of described thrust axis, all have a distance of 1-3mm, the position of working end and the position of counterweight end near described supporting mounting hole on described thrust axis are separately installed with one group of sensor holder, a pressure transducer is installed, the force side of described pressure transducer and the corresponding contact of described pivoted arm supporting in each described sensor holder, the signal output part of described rocker-type sensor and the signal output part of described pressure transducer respectively with corresponding connection of signal input part of monitor.
- Routine test hydro-extractor according to claim 1 quiet-mobile equilibrium monitoring device, it is characterized in that: between the top of described cross through hole and the end face of described thrust axis, all have the distance of 1.5mm between the bottom of described cross through hole and the bottom surface of described thrust axis.
- Routine test hydro-extractor according to claim 1 and 2 quiet-mobile equilibrium monitoring device, it is characterized in that: described in every group, bearing comprises two described bearings, four described bearings are installed on respectively four jiaos of bottom surface of described pivoted arm supporting.
- Routine test hydro-extractor according to claim 1 quiet-mobile equilibrium monitoring device, it is characterized in that: the both sides that described pivoted arm is bearing in the stage casing of the axial direction of described thrust axis are respectively equipped with breach, described sensor holder is placed in described breach, the corresponding contact of breach inner face that support with described pivoted arm the force side of described pressure transducer.
- Routine test hydro-extractor according to claim 4 quiet-mobile equilibrium monitoring device, it is characterized in that: described in every group, sensor holder comprises two described sensor holders, wherein one group two described sensor holders are installed on the both sides that are positioned at the upper surface of the working end of described supporting mounting hole on described thrust axis, and two described sensor holders of another group are installed on the both sides of the upper surface of the counterweight end that is positioned at described supporting mounting hole on described thrust axis.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122036A (en) * | 2014-08-01 | 2014-10-29 | 中国工程物理研究院总体工程研究所 | Static-dynamic balance monitoring device for routine test centrifugal machine |
| CN109604075A (en) * | 2019-02-13 | 2019-04-12 | 中国工程物理研究院总体工程研究所 | A kind of combined centrifugal machine pivoted arm |
| CN110907094A (en) * | 2019-12-13 | 2020-03-24 | 二重（德阳）重型装备有限公司 | Static balance detection method and device for large-scale arm-type rotating member |
| CN112857644A (en) * | 2021-01-11 | 2021-05-28 | 宁波大学 | Micro traction force testing mechanism |
-
2014
- 2014-08-01 CN CN201420432692.2U patent/CN203981346U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122036A (en) * | 2014-08-01 | 2014-10-29 | 中国工程物理研究院总体工程研究所 | Static-dynamic balance monitoring device for routine test centrifugal machine |
| CN104122036B (en) * | 2014-08-01 | 2016-06-08 | 中国工程物理研究院总体工程研究所 | Routine test centrifuge stationary-mobile state balance monitoring device |
| CN109604075A (en) * | 2019-02-13 | 2019-04-12 | 中国工程物理研究院总体工程研究所 | A kind of combined centrifugal machine pivoted arm |
| CN110907094A (en) * | 2019-12-13 | 2020-03-24 | 二重（德阳）重型装备有限公司 | Static balance detection method and device for large-scale arm-type rotating member |
| CN112857644A (en) * | 2021-01-11 | 2021-05-28 | 宁波大学 | Micro traction force testing mechanism |
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