CN203287194U - A vertically-moving part fall monitoring system - Google Patents
A vertically-moving part fall monitoring system Download PDFInfo
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- CN203287194U CN203287194U CN2013203382390U CN201320338239U CN203287194U CN 203287194 U CN203287194 U CN 203287194U CN 2013203382390 U CN2013203382390 U CN 2013203382390U CN 201320338239 U CN201320338239 U CN 201320338239U CN 203287194 U CN203287194 U CN 203287194U
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Abstract
The utility model relates to a vertically-moving part fall monitoring system. A vertically-moving part is driven by a driving mechanism. The vertically-moving part fall monitoring system comprises a first speed measuring sensor, a second speed measuring sensor, a data processing unit, and a control unit. The data output side of the first speed measuring sensor and the data output side of the second speed measuring sensor are connected with an input end of the data processing unit, respectively. The output end of the data processing unit is electrically connected with the control unit. When the vertically-moving part is out of control and begins to fall, the vertically-moving part fall monitoring system is capable of detecting a fault rapidly and automatically and outputting a fault signal. A brake apparatus, such as an electromagnetic brake, fast executes forced brake so as to prevent the vertically-moving part from undergoing a severe falling accident. In addition, the vertical moving speed of the vertically-moving part is still pertinent to the rotating speed of the output side of the driving mechanism when controllable fall happens, so misunderstanding cannot occur to the controllable fall when monitoring is performed.
Description
Technical field
The utility model relates to a kind of monitoring device that falls, particularly the vertical movement parts monitoring system of falling.Background technology
The vertical movement parts generally use motor to drive, and by gearing transmissions such as steel wire, chain, Timing Belt, rack-and-pinion, to realize the vertical movement of object.In case functional fault appears in these gearings, the vertical movement parts will fall because of Action of Gravity Field.And then productive life is caused serious potential safety hazard, for example elevator traction fracture of rope, fracture of mechanical arm axle tooth etc.In order to guarantee the security of motion process, general motor side all can the installation insurance device, when gearing generation problem, can affect the running speed of motor, motor rotation speed and standard electromotor running speed that safety apparatus receive compare, if when difference surpasses setting threshold, by safety apparatus, send brake signal, prevent that object from falling.
Yet above-mentionedly by the mode that increases safety apparatus at motor side, have following problem: when the driving-chain between motor and gearing ruptured, safety apparatus can't obtain abnormal signal, therefore, still can't guarantee the security of motion process fully; And existing safety apparatus just just start braking detecting when the motor actual speed reaches predetermined speed, therefore can not start immediately, so still may cause the object falling accident to occur.In addition,, due to the purposes demand of some specific occasion, can need the vertical movement parts to produce controlled falling, at this moment safety apparatus can be misunderstood to this controlled falling, and to productive life, make troubles.
Also have in some safety apparatus and adopt acceleration transducer, measure the acceleration of moving component due to acceleration transducer, when the value that senses acceleration is zero, show that falling of freely falling body occurred the vertical movement parts that this acceleration transducer is installed.But this mode has following some deficiency:
1, the motion of moving component is controlled by control system, if controller allows the vertical movement parts be in the state operation of freely falling body in a certain period, this state does not belong to fall failure, it is a kind of normal controlled motion state, the acceleration transducer of this moment is zero in the acceleration measurement of vertical direction, causes the wrong report of system;
2, the measurement of single-axis acceleration sensors induction direction and gravity conllinear just can be measured acceleration signal accurately, if the measurement that element is installed induction direction and gravity direction have an angle theta (θ＜90 °), if actual acceleration is A, acceleration measurement a=A*cos θ, therefore the accuracy of measured value is relevant with the size at θ angle, and the setting angle of the installation of the size of θ and sensor and vertical movement parts is relevant, these two parameters can not guarantee that all 100% is accurate in main equipment, therefore measure, have error;
3, acceleration transducer is a MEMS (micro electro mechanical system) (MEMS), and itself is to vibration sensing, and the mechanical vibration meeting increases noise, causes the inaccuracy of measurement data, and then causes the unreliable of whole system.
The utility model content
The technical problems to be solved in the utility model is: can't guarantee the security of motion process fully for the safety apparatus that overcome vertical movement parts in prior art, and the deficiency that can misunderstand etc. for controlled falling, the utility model provides a kind of vertical movement parts monitoring system of falling.
the technical scheme that its technical matters that solves the utility model adopts is: a kind of vertical movement parts monitoring system of falling, described vertical movement parts are driven by driving mechanism, comprise be used to the first tachogenerator of measuring described driving mechanism outgoing side rotating speed, be used for measuring the second tachogenerator of described vertical movement parts vertical movement speed, data processing unit and control module, described data processing unit has two input ends and an output terminal, the data outgoing side of described the first tachogenerator be connected the data outgoing side of tachogenerator and be connected with two input ends of described data processing unit respectively, the output terminal of described data processing unit is electrically connected on described control module.
The fall monitoring method of monitoring system of a kind of vertical movement parts of the present utility model, comprise the following steps: a, the described driving mechanism outgoing side of synchronous acquisition rotating speed v1 and described vertical movement parts vertical movement speed v 2; B, the value of v1/v2 and a constant i are compared, if v1/v2=i ± m judges normal operation; If v1/v2 ≠ i ± m, judge operation exception; The driving mechanism outgoing side rotating speed and the fixed ratio of vertical movement parts vertical movement speed of i for trying to achieve by the transmission parameter of mechanical system wherein, m is the error threshold of permission.
The first tachogenerator, for surveying speed probe, is calculated the rotating speed of driving mechanism outgoing side, i.e. the speed of driving side; The second tachogenerator is survey line speed sensor, the speed of measuring and calculating vertical movement parts, the i.e. speed of slave end.Under the proper motion state, the speed v 2 that the rotating speed v1 that the first tachogenerator calculates and the second tachogenerator calculate is a fixed ratio, and this ratio can be tried to achieve by the transmission parameter of mechanical system is unique.So, if machine normal operation v1/v2=i.If v1/v2 ≠ i, represent that fault has appearred in machinery, and the output brake drives signal, the startup braking., because all can there be error in the measured value of arbitrary physical quantity, therefore, can set as required the size of m value.
The beneficial effects of the utility model are, the vertical movement parts of the present utility model monitoring system of falling, after starting out of control falling, the vertical movement parts can automatically detect fast fault, and output fault-signal, carry out rapidly forced brake by clamping device such as electromagnetic brakes, the vertical movement parts can not cause serious falling accident; And due to when controlled falling occurs, vertical movement parts vertical movement speed is still relevant to driving mechanism outgoing side rotating speed, can not misunderstand to controlled falling while therefore monitoring.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the fall structural representations of the optimum embodiment of monitoring system of vertical movement parts of the present utility model.
In figure 1, driving mechanism, 2, the vertical movement parts, the 3, first tachogenerator, the 4, second tachogenerator, 5, gear, 6, tooth bar.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
as shown in Figure 1, a kind of vertical movement parts of the present utility model monitoring system of falling, comprise be used to the first tachogenerator 3 of measuring described driving mechanism 1 outgoing side rotating speed, be used for measuring the second tachogenerator 4 of described vertical movement parts 2 vertical movement speed, data processing unit and control module, described data processing unit has two input ends and an output terminal, the data outgoing side of described the first tachogenerator 3 be connected the data outgoing side of tachogenerator 4 and be connected with two input ends of described data processing unit respectively, the output terminal of described data processing unit is electrically connected on described control module.
Monitoring system shown in Figure 1 is monitored by following monitoring method, comprises the following steps: a, the described driving mechanism 1 outgoing side rotating speed v1 of synchronous acquisition and described vertical movement parts 2 vertical movement speed v 2; B, the value of v1/v2 and a constant i are compared, if v1/v2=i ± m judges normal operation; If v1/v2 ≠ i ± m, judge operation exception; The driving mechanism 1 outgoing side rotating speed and the fixed ratio of vertical movement parts 2 vertical movement speed of i for trying to achieve by the transmission parameter of mechanical system wherein, m is the error threshold of permission.
The first tachogenerator 3, for surveying speed probe, is calculated the rotating speed of driving mechanism 1 outgoing side, i.e. the speed of driving side; The second tachogenerator 4 is survey line speed sensor, the speed of measuring and calculating vertical movement parts 2, the i.e. speed of slave end.Under the proper motion state, the speed v 2 that the rotating speed v1 that the first tachogenerator 3 calculates and the second tachogenerator 4 calculate is a fixed ratio, and this ratio can be tried to achieve by the transmission parameter of mechanical system is unique.So, if machine normal operation v1/v2=i.If v1/v2 ≠ i, represent that fault has appearred in machinery, and the output brake drives signal, the startup braking., because all can there be error in the measured value of arbitrary physical quantity, therefore, can set as required the size of m value.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to the claim scope.
Claims (1)
1. vertical movement parts monitoring system of falling, described vertical movement parts (2) are driven by driving mechanism (1), it is characterized in that: comprise be used to the first tachogenerator (3) of measuring described driving mechanism (1) outgoing side rotating speed, be used for measuring second tachogenerator (4) of described vertical movement parts (2) vertical movement speed, data processing unit and control module, described data processing unit has two input ends and an output terminal, the data outgoing side of described the first tachogenerator (3) be connected the data outgoing side of tachogenerator (4) and be connected with two input ends of described data processing unit respectively, the output terminal of described data processing unit is electrically connected on described control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203382390U CN203287194U (en) | 2013-06-13 | 2013-06-13 | A vertically-moving part fall monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203382390U CN203287194U (en) | 2013-06-13 | 2013-06-13 | A vertically-moving part fall monitoring system |
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| CN203287194U true CN203287194U (en) | 2013-11-13 |
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| CN2013203382390U Expired - Fee Related CN203287194U (en) | 2013-06-13 | 2013-06-13 | A vertically-moving part fall monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278325A (en) * | 2013-06-13 | 2013-09-04 | 金石机器人常州有限公司 | Vertical movement component falling monitoring system and method thereof |
-
2013
- 2013-06-13 CN CN2013203382390U patent/CN203287194U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278325A (en) * | 2013-06-13 | 2013-09-04 | 金石机器人常州有限公司 | Vertical movement component falling monitoring system and method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 213164 Wujin new and high tech Industrial Development Zone, Jiangsu, Hui Hui Road, No. 7, A3, Patentee after: STON ROBOT CHANGZHOU CO., LTD. Address before: 213100 No. 7 Xinhui Road, South villa, Wujin District, Jiangsu, Changzhou Patentee before: Ston Robot Manufacturing (Changzhou) Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20160613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |