CN1118689C - Safety device for mechanical motor driven systems operating with rods and/or cables - Google Patents
Safety device for mechanical motor driven systems operating with rods and/or cables Download PDFInfo
- Publication number
- CN1118689C CN1118689C CN97192427A CN97192427A CN1118689C CN 1118689 C CN1118689 C CN 1118689C CN 97192427 A CN97192427 A CN 97192427A CN 97192427 A CN97192427 A CN 97192427A CN 1118689 C CN1118689 C CN 1118689C
- Authority
- CN
- China
- Prior art keywords
- load
- safety locking
- locking motion
- mobile device
- output signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
- G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/005—Means for preventing overload
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/047—Specific indicating or recording arrangements, e.g. for remote indication, for indicating overload or underload
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The disclosure concerns a safety device for mechanical motor-driven systems operating with rods and cables, such as devices used for moving stage or studio lights, suspended telescopes, pantographs, point hoists etc. The aim is to make the safety device capable of reacting promptly to an overload or underload and detect changes in the actual load even within the permissible range. To that end, the safety device is provided with a load-measuring device (9) with which the actual load imposed by the system can be measured continuously and an output signal can be generated continuously corresponding to the actual load.
Description
The present invention relates to a kind of safety locking motion, be used for machinery-electrodynamic type mobile device, for example the mobile device of the telescopical mobile device of mobile device, suspension type of stage or studio lights system, eidograph, the mobile device of point type hoister etc. with pull bar and/or dragrope work.
Such machinery-electrodynamic type device for example is the mobile device of a kind of stage or studio lights system, as is suspended on an illuminator on the I-beam, and this system is arranged near the ceiling of theater or teletorium.Described device can move in the vertical direction; Its purpose is to adjust the upright position of stage or studio lights lamp, makes it meet the requirement of program making.Stage or studio lights lamp are suspended on the support on the I-beam.The effect of safety locking motion of the present invention is, when barrier occurring on the stroke of whole device, can stop the device that is carrying stage or studio lights system to continue to move.Known this safety locking motion is according to overload or underload measuring principle work.Whether the power that can determine to act on the mobile device by the measurement overload has surpassed the highest setting.If this affirmation is proved, then the drive unit of machinery-electric device will stop, and perhaps make drive unit out of service.When the device that is fixed with stage or studio lights lamp moved up, overload also can appear.
Can confirm that by underload measurement when the device that is fixed with stage or studio lights lamp was mobile vertically downward, this object that is on the stroke that moves downward hindered.If described device is run in operational process on this object, then the power that acts on the measurement mechanism of this device will reduce.If confirmed this underload situation, the drive unit that is fixed with the device of stage or studio lights lamp will stop, and even not rerun.
The principle that known safety locking motion adopted is that when the device that is fixed with stage or studio lights lamp occurs transshipping or be underload, a mechanical part will impel this device towards one or another direction motion.This mechanical part for example is a spring, it combines with the releasing mechanism of a lever or rocking arm and analogous shape, this spring touches some dynamo-electric microswitches in the overload that surpasses a maximum possible or when being lower than a maximum possible underload, these switches should be positioned under the above-mentioned prerequisite by trigger part can operated position on, the output signal of this microswitch or open, or close; The control module of the drive unit of machinery-electrodynamic type mobile device will be received this signal, make drive unit out of service under above-mentioned prerequisite then.
In overload or between underload situation occurs and drive unit cuts out, the mechanical part that is usually designed to spring must be at first owing to overload or underload the distortion or deflection, with this mechanical part or spring assembly trigger unit together mechanical shift must take place then, make this trigger unit touch electro-mechanical moving switch that declines, the output signal of this switch is the control module of input driving device then.
Not only act in the process of the power on the mechanical electrodynamic type mobile device in detection, and, the interactional parts fellowship of many mutual dependence is arranged overload occurring or producing when underload and continue to transmit in the process of the output signal that the drive unit that makes above-mentioned machinery-electrodynamic type mobile device that is guided out by this power stops.In addition, need to realize several steps that are linked in sequence, show that up to one overload or the underload output signal moving switch that declined by electro-mechanical is input in the control module of drive unit.In addition, known safety locking motion also has a shortcoming, and promptly the output signal that is provided by the moving switch that declined by electro-mechanical only can confirm whether to exist or do not exist overload or underload state.
The objective of the invention is to, a kind of safety locking motion is provided, be used for machinery-electrodynamic type mobile device with pull bar and/or dragrope work, can measure the power that acts on machinery-electrodynamic type mobile device exactly on the one hand by it, compared with prior art can make reaction faster on the other hand overload or underload state.
The object of the present invention is achieved like this, be that described safety locking motion has a load-measuring device, measure the real load that acts on on the machinery-electrodynamic type mobile device of pull bar and/or dragrope work serially by this device, and send one and the corresponding load signal of this real load continuously, owing to measure the real load that acts on machinery-electrodynamic type mobile device serially, so as long as rising or descending appears in this real load, can take countermeasure, the drive unit of machinery-electrodynamic type mobile device cuts out.Owing to measure real load continuously, overload or underload situation also do not appear under the abnormal conditions if also can be implemented in, take countermeasure in early days, for example equipment is keeped in repair or maintains.
In safety locking motion of the present invention, described load-measuring device has an electronic type tension or compressive stress sensor worthily.From the measured stress state of tension or compressive stress sensor, can directly draw the energy level of the measured real load of tension or compressive stress sensor.Because the electronics mode is adopted in the work of tension or compressive stress sensor, can produce and the corresponding output signal of its stress state so need not other intermediate steps, and continue to transmit this signal.
In safety locking motion of the present invention, can realize direct response to the output signal of load-measuring device.Its mode is, described load-measuring device produces and the corresponding output signal of real load continuously, this signal enters in the control module of drive unit of machinery-electrodynamic type mobile device, and when the output signal of load-measuring device was higher or lower than a upper limit or following limited signal, described drive unit can be disconnected by means of control module or be out of service.
A kind of simple mode is that the described limited signal of going up determines that by a bearable load described limited signal is down determined by a minimum allowable load.
As another kind of alternative plan, the described limited signal of going up can determine that described limited signal is down determined by the bearable load decrement of time per unit by the bearable load increment of time per unit.
For reduce the expense of technical pattern as far as possible, and reduce to transship or underload appearance and safety locking motion of the present invention time delay between drive unit cuts out, the output signal of described load-measuring device is preferably sent in the microprocessor of control module of described drive unit and is handled as far as possible.
To the measurement that acts on the real load on machinery-electrodynamic type mobile device and collection and and the generation of the corresponding output signal of this real load can realize continuously by unique parts, its implementation is that the electronic type tension or the compressive stress sensor that constitute the load-measuring device in the safety locking motion of the present invention design as the strain stress measuring appliance.Real load can directly cause the change of strain stress measuring appliance duty, and this can cause having the change of a circuit voltage state of this strain stress measuring appliance simultaneously, thereby the output signal of load-measuring device is changed.The normal voltage of strain stress measuring appliance and certain duty of described machinery-electrodynamic type mobile device are complementary at this moment, but for example there is not barrier etc. in machinery-electrodynamic type mobile device non-fault ground work under this voltage.In case abnormal occurrence occurred, a barrier has for example appearred, then will cause the increase of acting force or reduce, thereby cause the variation of the voltage status of strain stress measuring appliance, cause having the change of output signal of the load-measuring device circuit of this strain stress measuring appliance simultaneously.
Described strain stress measuring appliance is arranged on the surface of a flexible member worthily.When this flexible member changes from its normal place, can directly cause the duty of strain stress measuring appliance to change, cause having the change of output signal of the load-measuring device circuit of this strain stress measuring appliance simultaneously.
In safety locking motion of the present invention, a kind of on structural manufacturing process the less scheme of expense be, described strain stress measuring appliance is made of the strain measurement bar, itself and the proportional voltage status of real load in fact can be directly as output signals, the control module of input machinery-electrodynamic type mobile device drive unit.
Described flexible member can adopt the very simple sheet spring of shape, and the strain measurement bar is fixed on this sheet spring by rights.
Also available electron formula tension or compressive stress sensor for example adopt the load measurement based on piezoelectric effect as the load measurement meter.
In safety locking motion of the present invention, described load-measuring device has the load capacity of no transverse force effect worthily.
If use the strain measurement bar, then preferably with its ingredient as a bridge circuit, described bridge circuit is the Hui Sidun bridge circuit particularly, by this circuit length variations of measurements and calculations strain measurement bar accurately.
Safety locking motion of the present invention can be used in particular for guaranteeing the safety of the connecting rod illumination suspension of stage lighting apparatus, teletorium or other program making units.
The present invention is described in further detail by the accompanying drawing illustrated embodiment below, in the accompanying drawing:
Fig. 1 is the side view of safety locking motion of the present invention;
Fig. 2 is the front view of safety locking motion shown in Figure 1;
Fig. 3 is connected the schematic diagram on the control module of a drive unit for safety locking motion of the present invention;
Fig. 4 is the illumination suspender.
The effect of safety locking motion of the present invention is, when causing overload or underload situation when barrier occurring on the tracks at the mobile device of stage or teletorium illuminator, this mobile device stopped.
Safety locking motion of the present invention is integrated on the suspension of machinery-electrodynamic type mobile device in the following manner.
An I shape crossbeam 1 is fixed near the ceiling of studio in common mode.
By two bolt parts 2, they are separately fixed on the following and middle splint 3 of I shape crossbeam 1, and fix a leaf spring 4 on I shape crossbeam 1, and this leaf spring is towards the length direction extension of I shape crossbeam 1 and exceed middle splint 3.
On leaf spring 4, hanging a support 6,, selecting the relative position between coupling bolt 5 and the leaf spring 4, when making mechanical load on the support 6 change, can cause that leaf spring 4 produces big as far as possible flexural deformation at this by a coupling bolt 5.
In the illustrated embodiment, on support 6, be fixed with steel band 7, on this steel band, be hung with fulcrum arrangement shown in Figure 4 17.This fulcrum arrangement can machinery-electronic mode move, thus can be in the studio with stage or studio lights system layout on needed vertical height.
When changing appears in the load of effect on the support 6, the variation that the position took place of leaf spring 4 will directly cause strain measurement bar 8 that length variations takes place, and this strain measurement bar is seen the Hui Sidun bridge circuit 13 that is used for support two suspensions shown in Fig. 3.
Two Hui Sidun bridge circuits 13 shown in Figure 3 are made up of two strain measurement bars 8 and known resistance 14 and 15 respectively.
The length variations of the strain measurement bar 8 in the Hui Sidun bridge circuit 13 can cause directly that the output signal of Hui Sidun bridge circuit 13 changes, and wherein a respective change of this output signal is input in the microprocessor 12 of driving device controls unit 11 by electronic component 16.
Output signal by Hui Sidun bridge circuit 13 changes can show overload or underload situation, thereby the drive unit of the mobile device of machinery-electrodynamic type stage or studio lights system is shut down.
Because based on the output signal of Hui Sidun bridge circuit 13 real load as can be known all the time, thereby this output signal also can be used for measuring and is greater than or less than certain situation of change underload or overload.
Should be pointed out that described strain measurement bar 8 in the modification different, can be used on any in the mobile device suspension of stage or studio lights system and be subjected on the parts of stress with described embodiment.
Continuous output signal is proportional with real load.Signal produces constantly, so that as long as real load has exceeded allowed band, just according to overload or underload state drive unit is stopped.
Claims (16)
1. safety locking motion, be used for machinery-electrodynamic type mobile device with pull bar and/or dragrope work, it is characterized in that having a load-measuring device (9), measure the real load that acts on on the machinery-electrodynamic type mobile device of pull bar and/or dragrope work serially by this device, and produce one and the corresponding output signal of this real load continuously.
2. safety locking motion as claimed in claim 1 is characterized in that described safety locking motion is the telescopical mobile device of mobile device, suspension type of stage or studio lights system, the mobile device of eidograph, the mobile device of point type hoister.
3. safety locking motion as claimed in claim 1, its load-measuring device (9) has an electronic type tension or compressive stress sensor.
4. safety locking motion as claimed in claim 1; wherein; the output signal of described load-measuring device (9) is transfused in the control module (11) of drive unit of machinery-electrodynamic type mobile device; and when the output signal of load-measuring device (9) was higher or lower than a upper limit or following limited signal, described drive unit can be shut down by control module (11) or be out of service.
5. safety locking motion as claimed in claim 4, wherein, the described limited signal of going up determines that by a bearable load described limited signal is down determined by a minimum allowable load.
6. safety locking motion as claimed in claim 4, wherein, the described limited signal of going up determines that by the bearable load increment in the time quantum described limited signal is down determined by the bearable load decrement in the time quantum.
7. safety locking motion as claimed in claim 4, wherein, described load-measuring device (9) is imported its output signal in one microprocessor (12) of control module (11) of described drive unit.
8. safety locking motion as claimed in claim 3, wherein, described electronic type tension or compressive stress sensor are the strain stress measuring appliances.
9. safety locking motion as claimed in claim 8, wherein, described strain stress measuring appliance is arranged on the surface of a flexible member.
10. safety locking motion as claimed in claim 9, wherein, described strain stress measuring appliance has strain measurement bar (8).
11. safety locking motion as claimed in claim 10, wherein, described flexible member is leaf spring (4).
12. safety locking motion as claimed in claim 3, wherein, described electronic type tension or compressive stress sensor are load measure meters.
13. safety locking motion as claimed in claim 12 is characterized in that described load measure meter is a load measurement based on piezoelectric effect.
14. safety locking motion as claimed in claim 1, its load-measuring device (9) has the load-bearing capacity of no transverse force effect.
15. safety locking motion as claimed in claim 10, wherein, described strain measurement bar (8) is the ingredient of a bridge circuit (13), particularly the ingredient of a Hui Sidun bridge circuit (13).
16. safety locking motion as claimed in claim 1 installs the safety of the connecting rod illumination suspension that guarantees stage lighting apparatus, teletorium or other program making unit by this.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19608418.0 | 1996-03-05 | ||
| DE19608418 | 1996-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1212050A CN1212050A (en) | 1999-03-24 |
| CN1118689C true CN1118689C (en) | 2003-08-20 |
Family
ID=7787245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97192427A Expired - Fee Related CN1118689C (en) | 1996-03-05 | 1997-03-04 | Safety device for mechanical motor driven systems operating with rods and/or cables |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0885378A1 (en) |
| JP (1) | JP3142579B2 (en) |
| KR (1) | KR19990087514A (en) |
| CN (1) | CN1118689C (en) |
| WO (1) | WO1997033144A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2981340B1 (en) * | 2011-10-13 | 2016-02-12 | Airbus | SYSTEM AND METHOD FOR LOAD LIFTING, IN PARTICULAR AIRCRAFT ENGINE. |
| CN102944343B (en) * | 2012-11-09 | 2014-07-30 | 辽宁工业大学 | Overload protection device for tension and pressure sensor |
| CN103186965B (en) * | 2013-04-19 | 2015-01-21 | 浙江大丰实业股份有限公司 | Stage safety protection monitoring system |
| CN103198613B (en) * | 2013-04-22 | 2015-04-08 | 浙江大丰实业股份有限公司 | Stage safety protecting and monitoring system |
| CN103236134B (en) * | 2013-05-02 | 2015-07-08 | 浙江大丰实业股份有限公司 | Anti-falling safety monitoring system for stage |
| DE102018008181A1 (en) * | 2018-10-16 | 2020-04-16 | Rainhard Nordbrock | Method and device for monitoring a load suspension device on a supporting structure |
| DE102021134133A1 (en) | 2021-12-21 | 2023-06-22 | Occhio GmbH | Height adjustment device for a pendant light with an automatically adjustable end position and lighting device with a height-adjustable light head |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB991662A (en) * | 1963-12-21 | 1965-05-12 | Gordon Carter Turkey Sales Ltd | Improvements in or relating to machines for automatically grading by weighing |
| US4081045A (en) * | 1977-01-10 | 1978-03-28 | United S. C. F., Inc. | Rail scale |
| EP0041127A1 (en) * | 1980-05-29 | 1981-12-09 | Eaton Corporation | Electromechanical scale |
| GB2180357A (en) * | 1985-09-10 | 1987-03-25 | Masterweigh Limited | Loadcell mounting |
| KR960015902B1 (en) * | 1991-06-07 | 1996-11-23 | 텔레리프트 게엠베하 앤드 콤파니 푀르더테크닉 카게 | Overload test device for conveyor carriage on a small railmounted conveyor installation |
| DE4236374A1 (en) * | 1992-10-28 | 1994-05-05 | Hartmut Vollmar | Device for loading a processing machine, in particular a plastic screw press |
-
1997
- 1997-03-04 KR KR1019980706946A patent/KR19990087514A/en not_active Application Discontinuation
- 1997-03-04 WO PCT/DE1997/000400 patent/WO1997033144A1/en not_active Application Discontinuation
- 1997-03-04 CN CN97192427A patent/CN1118689C/en not_active Expired - Fee Related
- 1997-03-04 EP EP97915330A patent/EP0885378A1/en not_active Withdrawn
- 1997-03-04 JP JP09531344A patent/JP3142579B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990087514A (en) | 1999-12-27 |
| EP0885378A1 (en) | 1998-12-23 |
| JPH11506208A (en) | 1999-06-02 |
| JP3142579B2 (en) | 2001-03-07 |
| CN1212050A (en) | 1999-03-24 |
| WO1997033144A1 (en) | 1997-09-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ADS-TTV TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: SIEMENS AG Effective date: 20040220 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040220 Address after: Belgian Blue Patentee after: ADS-TTV technologies Address before: Munich, Federal Republic of Germany Patentee before: Siemens AG |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |