CN200959161Y - Overload alarming device - Google Patents
Overload alarming device Download PDFInfo
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- CN200959161Y CN200959161Y CN 200620052369 CN200620052369U CN200959161Y CN 200959161 Y CN200959161 Y CN 200959161Y CN 200620052369 CN200620052369 CN 200620052369 CN 200620052369 U CN200620052369 U CN 200620052369U CN 200959161 Y CN200959161 Y CN 200959161Y
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Abstract
The utility model discloses an overload annunciator, including an annunciator body, a load sensor and an annunciator module mounted inside the annunciator body. The annunciator module includes a main control, a signal amplifying and converting element, a strorage element, a drive element, an input elemetn and a display element; among them, the input end of the main control is connected with the load sensor by the signal amplifying and converting element, the output end of the main control is connected with the alarm element, display element and the lock element mounted on the annunciator body by the drive element, and the storage element with the input element is connected with the main control. The main control is connected with a remote control used for calibration setting by a wireless receiving element, and the calibration switch element on the remote control is connected with the main control by the wireless transmitting element and the wireless receiving element. The utility model is an overload annunciator, which has the advantages of simple structrue, easy operation, high monitoring precision, and is in particular suited for the small type or low load lifting equipment without operating room.
Description
Technical field
The utility model is mainly concerned with load overload warning apparatus field, refers in particular to a kind of load overload warning device that is used to hanging devices such as driving a vehicle.
Background technology
Employed load overload warning device on the present all kinds of hanging device; as load limiter or overload protective device etc. all is than relatively large crane or hanging device (for example: the operation room twin hood crane that 20t is above) to be used for; its mentality of designing all is with load sensor and load limiter combination; by the control of the operation room on the hanging device, finish the work of overload or overload-alarm.For small-sized or low year hanging device,, therefore have the following disadvantages owing to there is not the design of operation room:
1, load overload warning device on the small-sized or low year hanging device of no operation room is carried out timing signal, hanging device must be reached on the fixing maintenance platform load overload warning device is carried out the initial setting up operation, and its demarcation weight of slinging is carried out repeatedly repetitive operation; In this process, need built cat ladder high-altitude application load overload warning device toward contact, labor intensity of operating personnel is big, poor stability;
2, existing load load limiter all is to adopt small-sized pilot lamp (diameter is less than 8mm) and small-sized hummer as indication of warning light and auditory tone cues, therefore be not suitable for the monitoring of remote (as more than 5 meters) slightly, more be not used in the load monitoring of the following no operation room hanging device of 20t, and existing load overload warning device does not show with the proportional numeral of load mostly;
When 3, existing load load limiter adopts side-compression load sensor and load limiter combination, but there is the low problem of precision.
The utility model content
The technical problems to be solved in the utility model just is: at the technical matters that prior art exists, the utility model provide a kind of simple in structure, easy and simple to handle, monitoring accuracy is high, particularly can be applicable to the load overload warning device of the small-sized or low year hanging device of no operation room.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of load overload warning device, it comprises the alarm body, load sensor and be installed in the intrinsic alarm module of alarm, described alarm module comprises master controller, signal amplifies converting unit, storage unit, driver element, input block and display unit, the input end of master controller amplifies converting unit by signal and links to each other with load sensor, the output terminal of master controller is by driver element and the alarm unit that is installed on the alarm body, display unit and lock cell link to each other, storage unit links to each other with master controller with input block, it is characterized in that: described master controller links to each other by the telepilot that radio receiving unit and is used for demarcating setting, and the calibration switch unit on the telepilot links to each other with master controller by wireless transmitting unit and radio receiving unit.
Described alarm unit adopts one or more caution flashing light.
Described caution flashing light adopts the single-frequency flashing light.
Described alarm unit comprises voice guard, and this voice guard adopts high loudness hummer.
Described load sensor adopts the side-compression pressure transducer.
Compared with prior art, advantage of the present utility model just is:
1, the utility model adopts wireless remote control technology that alarm is carried out the remote control setting operation, makes the demarcation of alarm after installation be provided with to need not operating personnel in the work to climb up the high-altitude application alarm.Also need not hanging devices such as driving are moored on fixing maintenance platform, both alleviated the personnel's that demarcate labour intensity, make staking-out work oversimplify (need not driving waits hanging device to hurry back and forth back and forth in maintenance platform with in the middle of demarcating weight) again;
2, alarm unit of the present utility model adopts the high brightness flashing light, efficiently solves the problem of the remote light caution of not operation chamber hanging device;
3, alarm unit of the present utility model adopts high loudness zund-Burguet apparatus (greater than 110db), as alarm sound prompting, makes and can both hear alarm sound clearly under the noisy environment in 100 meters;
4, during the supporting use of the utility model alarm and side-compression load sensor, alarm can adopt multistage software gamma correction, both bring into play the side-compression sensor and do not changed the advantage that hanging device such as driving steel cable structure is guaranteed safety coefficient, overcome the big shortcoming of nonlinearity erron of side-compression load sensor again.Make system accuracy can improve an order of magnitude (bringing up to 0.5%) from 1.5%.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a framed structure synoptic diagram of the present utility model;
Fig. 3 is the circuit theory synoptic diagram of the utility model specific embodiment;
Fig. 4 is the force analysis synoptic diagram of side-compression sensor.
Marginal data
1, alarm body 2, load sensor
3, alarm module 31, master controller
32, signal amplifies converting unit 321, signal amplification unit
322, A/D converting unit 323, photoelectricity isolated location
33, storage unit 34, driver element
35, input block 36, display unit
37, lock cell 38, radio receiving unit
39, pulse shaping unit 4, alarm unit
41, caution flashing light 42, voice guard
5, telepilot 51, calibration switch unit
511, first order calibration switch 512, second level calibration switch
513, third level calibration switch 514, determine switch
52, wireless transmitting unit 6, wirerope
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
As depicted in figs. 1 and 2, load overload warning device of the present utility model, it comprises alarm body 1, load sensor 2 and is installed in alarm module 3 in the alarm body 1, load sensor 2 is installed on driving and waits on the hanging device, load overload warning device is provided with the input cable that fetches from the electric cabinet of hanging devices such as driving, guarantees for complete machine provides power supply.Alarm module 3 comprises master controller 31, signal amplifies converting unit 32, storage unit 33, driver element 34, input block 35 and display unit 36, the input end of master controller 31 amplifies converting unit 32 by signal and links to each other with load sensor 2, the output terminal of master controller 31 is by driver element 34 and the alarm unit 4 that is installed on the alarm body 1, display unit 36 and lock cell 37 link to each other, storage unit 33 links to each other with master controller 31 with input block 35, storage unit 33 is used for preserving demarcates the information on load that sets, and input block 35 is used for the input of operation information; Lock cell 37 adopts interlocking relay, and its contact just often is a normally off at load, and the suspension hook of generally receiving electric cabinet rises and controls in the secondary circuit.Load sensor 2 adopts the side-compression force transducer, by with the supporting use of side-compression force transducer, need not to tear open the wirerope 6 of Lift-on/Lift-off System, neither can increase the contact of wirerope 6, can also stop the serious hidden danger of the Lift-on/Lift-off System that serially connected load sensor 2 causes because of the destructive fracture of sensor.Wherein, signal amplifies converting unit 32 and comprises signal amplification unit 321, A/D converting unit 322 and the photoelectricity isolated location 323 that links to each other successively, signal amplification unit 321 links to each other with load sensor 2, photoelectricity isolated location 323 links to each other with the input end of master controller 31, by load sensor 2 output with the proportional mV signal of load, after signal amplification unit 321 amplifies, send into A/D converting unit 322 and carry out the A/D conversion, become digital quantity after photoelectricity isolated location 323 is sent into master controller 31.Master controller 31 links to each other by the telepilot 5 that radio receiving unit 38 and is used for demarcating setting, calibration switch unit 51 on the telepilot 5 links to each other with master controller 31 by wireless transmitting unit 52 and radio receiving unit 38, carry out proving operation by the calibration switch unit on the telepilot 5 51, operational order is launched by wireless transmitting unit 52 after being converted to signal, and radio receiving unit 38 receives, input master controller 31 is sent into after 31 pairs of demarcation signals of master controller are handled in the storage unit 33 and is preserved behind pulse shaping unit 39.When treating that complete machine detects in real time under nominal situation, load sensor 2 sends detected real-time load signal to master controller 31, master controller 31 compares 4 outputs of back control alarm unit with the prevalue in itself and the storage unit 33 (predefined warning and interlocking set-point), produce acousto-optic and passive contact output signal, for reporting to the police and control usefulness.In the present embodiment, calibration switch unit 51 comprises first order calibration switch 511, second level calibration switch 512, third level calibration switch 513 and definite switch 514, first order alarm, second level alarm and the third level alarm of first order calibration switch 511, second level calibration switch 512 and the corresponding respectively load overload warning of third level calibration switch 513 device.In the present embodiment, alarm unit 4 adopts one or more caution flashing light 41, this caution flashing light 41 can adopt redness or yellow single-frequency flashing light LTE-3071 (being similar to aircraft warning at night lamp), and this caution flashing light 41 is particularly suitable for not having the remote light caution of operation room.Alarm unit 4 further comprises voice guard 42, and this voice guard 42 adopts high loudness hummer, and the acoustical generator (greater than 110db) that utilizes high loudness is as the alarm sound prompting, makes can both hear alarm sound clearly under the noisy environment in 100 meters.Three grades of cautions of corresponding present embodiment, alarm unit 4 adopts the array mode of two caution flashing lights 41 and a voice guard 42.
Referring to shown in Figure 3, the mV signal of load sensor 2 outputs is linked into delivers to four and half A/D converting units, 322 (I6 after the signal amplification unit of being made up of I1-1, I1-2, I1-3 (OP07) 321 amplifies, employing ICL7135) carries out the A/D conversion, convert digital quantity to after deliver to 8,13 and 15 pin of master controller 31 (A1 adopts AT8952) behind G2-1, G2-2 (TLP521-2), the G4-1 photoelectricity isolated locations 323 such as (6N137).The P0 mouth of master controller 31 is used for linking to each other with display unit 36 with P3.6, P3.7, P2.3, P2.4, supports decoding and position choosing that LED shows.The P2.5 of master controller 31, P2.6, P2.7, P1.5 are used for linking to each other with input block 35, support the input of this machine.In order not damage radio receiving unit 38 with input block 35 common port of this machine and to improve the reliability of telechirics, the output signal of radio receiving unit 38 (ZMC) does not directly link to each other with master controller 31, but be input to (A1) in the master controller 31 after anti-phase by 6 Schmidt trigger F1 (74LS14) shapings, driver element 34 (H6, adopt MC1413) be the output driving interface circuit of master controller 31, be used to drive the interlocking relay J of two caution flashing lights 41 and voice guard 42 and lock cell 37, storage unit 33 adopts E
2(M1 AT24C02), is used for store alarms data is set prom memory, and P2.0, P2.1, the P2.2 of it and master controller 31 link to each other.
In the present embodiment, utilize 5 pairs of the utility model of telepilot to demarcate the method for setting, at first install load alarm 2 and must demarcate alarming values at different levels are set, in making regular check on, also may reset.Introduce the method to set up of the preset value of respectively reporting to the police of this alarm below: four buttons are arranged on the telepilot 5, be respectively first order calibration switch 511, second level calibration switch 512, third level calibration switch 513 and definite switch 514, can make the demarcation personnel corresponding weight of slinging at terrestrial operation telepilot 5 with on the hanging device suspension hook just can realize demarcating setting work by these four buttons.
The setting of first order warning set-point AL1: when load reaches first order warning set-point, press on the telepilot 5 first order calibration switch press in 511, four seconds determine switch 514 after, the load value of this moment promptly is taken as the first alarming value AL1 and preserves.
The setting of second level warning set-point AL2: when load reaches second level warning set-point, press on the telepilot 5 second level calibration switch press in 512, four seconds determine switch 514 after, the load value of this moment promptly is taken as the second alarming value AL2 and preserves.
The setting of third level warning interlocking set-point AL3: when load reaches third level warning set-point, press third level calibration switch 513 on the telepilot 5, after pressing definite switch 514 in four seconds, the load value of this moment promptly is taken as the 3rd alarming value AL3 and preserves.
In demarcation and observation process, analysis of side-compression sensor errors and software modification method are as follows: referring to the force analysis figure of side-compression sensor shown in Figure 4, the plane of suspension hook wirerope 6 and load sensor 2 becomes the angle initial angle alpha
0=13.5 °, when suspension hook is sling load sensor 2 fully loaded weights, the pulling force of wirerope 6 is FS, this pulling force produces the component of FL on load sensor 2, the deformation that this component makes load sensor 2 produce about 0.3～0.5mm, this deformation causes the angle α of wirerope 6 and load sensor 2 to reduce, and the variation of this angle influences the stressed of sensor again, can cause 1% nonlinearity erron nearly; Concrete calculate as followsly, establishing the center of load sensor 2 and centre distance that load sensor 2 wireropes are lifted interblock is L, and it is h that wirerope 6 is lifted tile height, and k is deformation coefficient (mm/t), then:
FL＝tgα×Fs (1)
tgα＝h-k×FL (2)
(2) formula substitution (1) formula is drawn:
FL＝h×Fs÷(L+k×Fs) (3)
Being used for the 10t crane with certain 3t load sensor 2 is example, L=75mm, h=18mm, k=0.2mm/t
Calculate this nonlinearity erron=0.64%, add wirerope 6 deformation cause error, total additional nonlinearity erron surpasses 1%.Add the error of load sensor 2 itself, optical sensor and wirerope 6 just have 1.2～1.5% error, bring influence to measurement.
Above nonlinearity erron solves by software compensation, but some error is unforeseen, distortion inaccuracy as wirerope 6, the error of load sensor 2 itself, so can not be directly with a formula compensation, and must adopt multistage segmented fitting technology to compensate, this load overload warning device adopts software to reach 16 sections broken lines and compensates above additional nonlinearity erron.Make total error control in 0.5%.
Principle of work: in the present embodiment, the caution of load overload warning device divides three grades, be respectively AL1, AL2, AL3, wherein AL1 is first order early warning (first caution flashing light 41 glittering voice guards 42 that add is intermittently rung), AL2 is the second level alert again (second glittering voice guard 42 that adds of caution flashing light 41 flashing lights rung continuously), AL3 is third level intertripping (first is glittering with 41 whiles of the second caution flashing light, voice guard 42 is rung continuously adds interlocking relay time-delay adhesive), and AL1＜AL2＜AL3.Such as the driving of a 10t, join this alarm after, three grades of warning preset value AL1, AL2, AL3 can be arranged to 95% (9.5t), 98% (9.8t) and 100% (10t) respectively.
At first set warning preset value AL1 at different levels, AL2, AL3, concrete grammar is as follows:
1), the setting of first order warning AL1:
Hang on the load (can hang standard counterweight counterweight or hang nonstandard unknown weight and monitor weight) that is equivalent to first order alarming value AL1 with hang hook steelyard at travelling crane hook, 9.5t (95%) as the 10t driving, after the load demonstration is stable, after the demarcation personnel press first order calibration switch 511 on the telepilot 5 on the ground, show " AL1 " character on the display unit 36, voice guard 42 is rung in the alarm, press in four seconds on the telepilot 5 determine switch 514 after, show " 1OK " printed words on the display unit 36, then Ci Shi lift heavy load value promptly is taken as the first alarming value AL1 and is kept in the storage unit 33.
2), the setting of second level warning AL2:
Hang on the load that is equivalent to second level alarming value AL2 at travelling crane hook, 9.8t (98%) as the 10t driving, after the load demonstration is stable, the demarcation personnel press the second level calibration switch 512 on the telepilot 5 on the ground, show " AL2 " character on the display unit 36, voice guard 42 is rung in the alarm; After pressing the definite switch 514 on the telepilot 5 in four seconds, show " 2OK " printed words on the display unit 36, then Ci Shi lift heavy load value promptly is taken as the second alarming value AL2 and is kept in the storage unit 33.
3), the setting of third level warning interlocking AL3:
Hang on the load that is equivalent to third level alarming value AL3 at travelling crane hook, 10t (100%) as the 10t driving, after the load demonstration is stable, the demarcation personnel press the third level calibration switch 512 on the telepilot 5 on the ground, show " AL3 " character on the display unit 36, voice guard 42 is rung in the alarm; After pressing the definite switch 514 on the telepilot 5 in four seconds, show " 3OK " printed words on the display unit 36, then Ci Shi lift heavy load value promptly is taken as the 3rd alarming value AL3 and is kept in the storage unit 33.
Below promptly finished the setting of three warning preset values of load overload warning system.
Do alarm and protection action test by following accompanying method:
When this driving lifted weight did not surpass the value 9.5t of AL1, this alarm can not send any warning output.
When this driving lifted weight continued to be increased to value 9.5t above AL1, yellow caution flashing light 41 was glittering on the alarm, and voice guard 42 sends interrupted chimes of doom, and prompting operation person's load has surpassed the AL1 value;
When the driving lift heavy continued to increase the value 9.8t that surpasses Al2, red caution flashing light 41 was glittering, and yellow caution flashing light 41 stops glittering, and voice guard 42 sends continuous alarm sound, and caution operator load has surpassed the value of AL2;
When the driving lift heavy continued to increase the value 10t that surpasses Al3, red and yellow caution flashing light 41 was all glittering, and voice guard 42 sends continuous alarm sound, and caution operator load has surpassed the value of AL3; If surpassing AL3, load continues more than 3 seconds, the then interlocking relay of lock cell 37 action, and the vertical motion of the suspension hook of cut-out driving or the general supply of driving can't be hung oneself suspension hook again.Thereby reach the purpose of stopping to overload.
Above course of action is listed as follows shown in the table 1:
Table 1:
Claims (6)
1, a kind of load overload warning device, it comprises alarm body (1), load sensor (2) and be installed in alarm module (3) in the alarm body (1), described alarm module (3) comprises master controller (31), signal amplifies converting unit (32), storage unit (33), driver element (34), input block (35) and display unit (36), the input end of master controller (31) amplifies converting unit (32) by signal and links to each other with load sensor (2), the output terminal of master controller (31) is by driver element (34) and the alarm unit (4) that is installed on the alarm body (1), display unit (36) and lock cell (37) link to each other, storage unit (33) links to each other with master controller (31) with input block (35), it is characterized in that: described master controller (31) links to each other by the telepilot (5) that radio receiving unit (38) and is used for demarcating setting, and the calibration switch unit (51) on the telepilot (5) links to each other with master controller (31) by wireless transmitting unit (52) and radio receiving unit (38).
2, load overload warning device according to claim 1 is characterized in that: described alarm unit (4) adopts one or more caution flashing light (41).
3, load overload warning device according to claim 2 is characterized in that: described caution flashing light (41) adopts the single-frequency flashing light.
4, according to claim 1 or 2 or 3 described load overload warning devices, it is characterized in that: described alarm unit (4) comprises voice guard (42), and this voice guard (42) adopts high loudness hummer.
5, according to claim 1 or 2 or 3 described load overload warning devices, it is characterized in that: described load sensor (2) adopts the side-compression pressure transducer.
6, load overload warning device according to claim 4 is characterized in that: described load sensor (2) adopts the side-compression pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052369 CN200959161Y (en) | 2006-09-29 | 2006-09-29 | Overload alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052369 CN200959161Y (en) | 2006-09-29 | 2006-09-29 | Overload alarming device |
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| Publication Number | Publication Date |
|---|---|
| CN200959161Y true CN200959161Y (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620052369 Expired - Fee Related CN200959161Y (en) | 2006-09-29 | 2006-09-29 | Overload alarming device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586998A (en) * | 2009-06-19 | 2009-11-25 | 威海市怡和专用设备制造有限公司 | Overload detection device for working platform and detection method thereof |
| CN103245405A (en) * | 2013-05-20 | 2013-08-14 | 昆山市创新科技检测仪器有限公司 | Novel high-precision vehicle overload detection system and detection method of novel high-precision vehicle overload detection system |
| CN105067163A (en) * | 2015-07-28 | 2015-11-18 | 煤炭科学技术研究院有限公司 | Pressure data monitoring device based on crawler walking bracket vehicle |
-
2006
- 2006-09-29 CN CN 200620052369 patent/CN200959161Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586998A (en) * | 2009-06-19 | 2009-11-25 | 威海市怡和专用设备制造有限公司 | Overload detection device for working platform and detection method thereof |
| CN103245405A (en) * | 2013-05-20 | 2013-08-14 | 昆山市创新科技检测仪器有限公司 | Novel high-precision vehicle overload detection system and detection method of novel high-precision vehicle overload detection system |
| CN105067163A (en) * | 2015-07-28 | 2015-11-18 | 煤炭科学技术研究院有限公司 | Pressure data monitoring device based on crawler walking bracket vehicle |
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| Date | Code | Title | Description |
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| 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: 20071010 Termination date: 20091029 |