CN209275916U - A kind of lift car weight induction alarm system - Google Patents
A kind of lift car weight induction alarm system Download PDFInfo
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- CN209275916U CN209275916U CN201822090409.3U CN201822090409U CN209275916U CN 209275916 U CN209275916 U CN 209275916U CN 201822090409 U CN201822090409 U CN 201822090409U CN 209275916 U CN209275916 U CN 209275916U
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- signal
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- induction
- lift car
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Abstract
The utility model relates to a kind of lift car weight induction alarm systems, it is related to elevators field, it includes carriage body, the intracorporal bottom in compartment is equipped with loading plate, limited block is provided between the loading plate and carriage body inner bottom surface, the weight induction alarm system further includes the induction system for incuding weight in carriage body, the induction system includes: the weight detecting module for detecting weight in carriage body, signal processing module for being handled weight inductive signal, signal comparison module for receiving mean value signal and being compared to mean value signal, for receiving the alarming and managing module of overweight signal, and the alarm module for alarm.The utility model has the accuracy for improving weight detecting in carriage body, improves the effect of elevator working efficiency.
Description
Technical field
The utility model relates to the technical field of elevator, being alarmed more particularly, to a kind of lift car with weight induction is
System.
Background technique
Lift car is the tool that carrying individuals and cargo are used in elevator, under the control of elevator control cabinet, traction machine
Lift car is affected to move up and down in elevator shaft.The security consideration of load requirement and personnel based on traction machine, generally
The overload protection device comprising weight induction sensor an of elevator can be set.For example, when the total weight of passenger in elevator is big
It when the load threshold value of elevator, will overload, at this point, the car door of lift car can be kept open, and electricity
Terraced carriage issues the alarm sound of overload.
Although traditional lift car has overload protection device, since weight induction sensor is arranged on rope hitch plate,
In actual motion, when people's erect-position in elevator is uneven, weight is uneven in elevator, the data meeting that weight induction device senses
Actual weight beyond personnel in elevator, so that the situation of elevator false alarm is generated, and for counterpoise, lead to subsequent personnel
It blindly passes in and out, reduces the working efficiency of lift car.
Utility model content
The purpose of the utility model is to provide a kind of lift car weight induction alarm system, weight in carriage can be improved
The detection accuracy of amount, improves work efficiency.
The above-mentioned purpose of utility model of the utility model has the technical scheme that
A kind of lift car weight induction alarm system, including carriage body, the intracorporal bottom in compartment are equipped with loading plate,
Limited block is provided between the loading plate and carriage body inner bottom surface, the weight induction alarm system further includes for incuding carriage body
The induction system of interior weight, the induction system include:
Weight detecting module, N number of weight induction sensor including bottom bearing plate is arranged in, N are more than or equal to 2, weight
Detection module is used to detect the load capacity of corresponding position, and corresponding output weight induction signal；When weight induction sensor is examined
When measuring weight, weight induction signal is exported；
Signal processing module is connected to weight detecting module, exports linear with the average value of total weight inductive signal
The mean value signal of variation；When receiving weight induction signal, mean value signal is exported；
Signal comparison module, is connected to signal processing module, for receiving mean value signal；When receiving mean value signal,
Mean value signal and a reference signal are compared, when mean value signal is greater than reference signal, export overweight signal；
Alarming and managing module is connected to signal comparison module, for receiving overweight signal；When receiving overweight signal,
Export alarm signal；
Alarm module is connected to alarming and managing module, for receiving alarm signal；When receiving alarm signal, alarm
Module is alarmed.
By using above-mentioned technical proposal, when passenger station is on loading plate, the decline of loading plate stress, subsequent weight induction
Sensor senses the intracorporal weight in compartment, and by output total current, to generate weight induction signal；Work as signal processing module
When receiving weight induction signal, inductive signal is amplified, and export mean value signal；When signal comparison module receives mean value
When signal, mean value signal and reference signal are compared, when mean value signal is greater than reference signal, export overweight signal；When
When alarming and managing module receives overweight signal, alarm signal is exported；When alarm module receives alarm signal, alarm module
Alarm.
The utility model is further arranged to: the contact surface of the limited block and loading plate is enclosed equipped with bolster.
The utility model is further arranged to: the signal processing module includes operational amplifier, the operational amplifier
Negative input and weight detecting block coupled in series, the electrode input end of the operational amplifier is grounded through a protective resistance, institute
The output end for stating operational amplifier is in parallel with the negative input of operational amplifier through a filter resistor.
The utility model is further arranged to: the signal comparison module includes point for being coupled to operational amplifier output terminal
Volt circuit and the comparator for being coupled to bleeder circuit, the bleeder circuit include the first resistor being serially connected and the second electricity
Resistance, the resistance value of the first resistor and the resistance value ratio of second resistance are (N-1): 1, the bleeder circuit is being coupled to comparator just
Pole input terminal, the negative input of the comparator are coupled to a reference circuit, and the reference circuit is for generating reference signal.
By using above-mentioned technical proposal, when weight induction signal is after operational amplifier amplifies, via bleeder circuit into
Row partial pressure, due to the resistance value of resistance value (N-1) times second resistance of first resistor, so that the voltage of bleeder circuit output is total electricity
The 1/N of pressure, so that the average value for making the voltage value total voltage of mean value signal is taken, mean value signal and benchmark electricity after being then averaged
The reference signal on road is compared, to judge whether overweight.
The utility model is further arranged to: the reference circuit include be coupled to external power supply reference resistance and
It is parallel to the protective resistance of reference resistance, the other end ground connection of protective resistance.
The utility model is further arranged to: being equipped between the loading plate and carriage body inner bottom surface and is used to support loading plate
Support rod.
The utility model is further arranged to: the support rod is set as telescopic rod.
In conclusion the advantageous effects of the utility model are as follows:
1. can be realized the accurate induction to weight in carriage body by setting induction system, improving the accurate of weight induction
Degree；
2. can be avoided loading plate by setting limited block and spring and excessively decline and damaged to induction system；
3. can be supported to strut plate by setting support rod, guarantee the normal use of loading plate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structure sectional view of the utility model.
Fig. 3 is the structural schematic diagram of induction system.
Fig. 4 is the circuit diagram of induction system.
Appended drawing reference: 1, carriage body；11, loading plate；12, limited block；13, support rod；14, spring；15, bolster；16, again
Measure inductive pick-up；2, induction system；21, weight detecting module；22, signal processing module；221, bleeder circuit；23, signal
Comparison module；231, reference circuit；24, alarming and managing module；25, alarm module.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
It referring to FIG. 1 and FIG. 2, is a kind of lift car weight induction alarm system disclosed by the utility model, including compartment
Body 1, the central area of the bottom surface in carriage body 1 and four corner areas are installed with limited block 12, and four corner areas are also solid
Equipped with support rod 13 flexible along the vertical direction, limited block 12 cooperates support rod 13 to be supported by for carrying out carrying passenger or cargo
Loading plate 11, when 11 non-stress of loading plate, support rod 13 being capable of support bearing plate 11；Between loading plate 11 and limited block 12
It is equipped with bolster 15, and limited block 12 is arranged in bolster 15 and is respectively and fixedly provided with spring 14, the top of spring 14, which is connected to, holds
Support plate 11；When passenger or cargo enter in carriage body 1, support rod 13 cooperate spring 14 shrink, loading plate 11 by bolster 15 into
It is limited block 12 after row buffering and is limited to designated position；Wherein, the vertical section of limited block 12 is set as up-small and down-big trapezoidal, makes
The load-bearing of limited block 12 is more concentrated, and keeps the carrying of limited block 12 more stable；Bolster 15 is provided around limited block 12
Surface is simultaneously fixed on the trapezoidal rubber pad on limited block 12.
In the present embodiment, to realize the induction to weight in carriage body 1, referring to Fig. 3 and Fig. 4, weight induction system is also wrapped
The induction system 2 for incuding weight in carriage body 1 is included, induction system 2 includes:
Weight detecting module 21, multiple weight induction sensors 16 including 11 bottom of loading plate is arranged in, for detecting
The load capacity of corresponding position, and corresponding output weight induction signal；The upper of limited block 12 is arranged in weight induction sensor 16
Surface, and the spring 14 on limited block 12 is centered around around weight induction sensor 16；When 11 stress of loading plate declines and by bullet
After spring 14 buffers, weight induction sensor 16 is abutted against with loading plate 11, and subsequent weight induction sensor 16 detects in carriage body 1
Weight, and export weight induction signal；Wherein, weight induction sensor 16 is disposed as the weighing sensor of model NA2,
And the output end of each weight induction sensor 16 is connected with each other；In addition, the upper surface of weight sensor 16 is parallel to bolster
15 upper surface.
Signal processing module 22, including operational amplifier U1, the negative input and weight detecting mould of operational amplifier U1
Total output end of block 21 is connected, and the electrode input end of operational amplifier U1 is grounded through a protective resistance R7, operational amplifier U1's
Output end is in parallel with the negative input of operational amplifier U1 through a filter resistor R6；Weight detecting module 21 is come from when receiving
Weight induction signal when, operational amplifier U1 amplifies weight inductive signal, and passes through the output of operational amplifier U1
End output mean value signal；
Signal comparison module 23, including being coupled to the bleeder circuit 221 of operational amplifier U1 output end and being coupled to point
The comparator U2 of volt circuit 221, bleeder circuit 221 include the first resistor R8 and second resistance R9 being serially connected, first resistor
The resistance value of R8 and the resistance value ratio of second resistance R9 are (N-1): 1, bleeder circuit 221 is coupled to the electrode input end of comparator U2,
The negative input of comparator U2 is coupled to one for generating the reference circuit 231 of reference signal, and reference circuit 231 includes coupling
In external power supply reference resistance R10 and be parallel to the protective resistance R11 of reference resistance R10, protective resistance R11's is another
End ground connection, the output end of comparator U2 are coupled to alarming and managing module 24；When signal comparison module 23 receives mean value signal,
Mean value signal and a reference signal are compared, when mean value signal is greater than reference signal, export overweight signal；
Alarming and managing module 24 is connected to signal comparison module 23, for receiving overweight signal；When receiving overweight signal
When, export alarm signal；
Alarm module 25 is connected to alarming and managing module 24, for receiving alarm signal；When receiving alarm signal,
Alarm module 25 is alarmed.
The implementation principle of the present embodiment are as follows: in use, support rod 13 cooperates bullet when passenger or cargo enter in carriage body 1
Spring 14 is shunk, so that loading plate 11 be avoided to decline too fast and damage to weight inductive pick-up 16；Simultaneously as limited block
12 is trapezoidal, concentrates on weight on limited block 12, to keep the induction of weight induction sensor 16 more accurate；
When the decline of 11 stress of loading plate, the weight induction sensor 16 on limited block 12 senses the weight in carriage body 1,
And logical output total current, to generate weight induction signal；
Weight induction signal is divided, due to first resistor after operational amplifier U1 amplification via bleeder circuit 221
The resistance value of resistance value (N-1) times second resistance R9 of R8, so that the voltage that bleeder circuit 221 exports is the 1/N of total voltage, thus
The average value for making the voltage value total voltage of mean value signal is taken, the benchmark of mean value signal and reference circuit 231 after being then averaged
Signal is compared, to judge whether overweight；
When alarming and managing module 24 receives overweight signal, alarm signal is exported；When alarm module 25 receives alarm
When signal, alarm module 25 is alarmed；Signal due to the mean value signal using weight as detection, thus to weight inductive signal
It is compared, to avoid false alarm due to distribution of weight is irregular；Wherein, alarming and managing module 24 is set as model
The PLC controller of FX1N-24MR；Alarm module 25 is set as the electromagnetic type buzzer siren of model KS-09605F-12027.
The utility model can be realized the accurate induction to weight in carriage body 1 by setting induction system 2, improve weight
The accuracy of induction；By setting limited block 12 and spring 14, it can be avoided loading plate 11 and excessively decline and induction system 2 is made
At damage；By the way that support rod 13 is arranged, loading plate 11 can be supported, guarantee the normal use of loading plate 11.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (8)
1. a kind of lift car weight induction alarm system, including carriage body (1), it is characterised in that: the bottom in the carriage body (1)
Portion is equipped with loading plate (11), is provided with limited block (12), the weight between the loading plate (11) and carriage body (1) inner bottom surface
Induction alarm system further includes the induction system (2) for incuding carriage body (1) interior weight, and the induction system (2) includes:
Weight detecting module (21), including be arranged loading plate (11) bottom N number of weight induction sensor (16), N be greater than etc.
In 2, weight detecting module (21) is used to detect the load capacity of corresponding position, and corresponding output weight induction signal；Work as weight
When inductive pick-up (16) detects weight, weight induction signal is exported；
Signal processing module (22) is connected to weight detecting module (21), and output and the average value of total weight inductive signal are in
The mean value signal of linear change；When receiving weight induction signal, mean value signal is exported；
Signal comparison module (23) is connected to signal processing module (22), for receiving mean value signal；When receiving mean value signal
When, mean value signal and a reference signal are compared, when mean value signal is greater than reference signal, export overweight signal；
Alarming and managing module (24) is connected to signal comparison module (23), for receiving overweight signal；When receiving overweight signal
When, export alarm signal；
Alarm module (25) is connected to alarming and managing module (24), for receiving alarm signal；When receiving alarm signal,
Alarm module (25) is alarmed.
2. a kind of lift car weight induction alarm system according to claim 1, it is characterised in that: the limited block
(12) it encloses with the contact surface of loading plate (11) equipped with bolster (15).
3. a kind of lift car weight induction alarm system according to claim 1, it is characterised in that: at the signal
Managing module (22) includes operational amplifier, and the negative input of the operational amplifier is connected with weight detecting module (21), institute
The electrode input end for stating operational amplifier is grounded through a protective resistance, the output end of the operational amplifier through a filter resistor with
The negative input of operational amplifier is in parallel.
4. a kind of lift car weight induction alarm system according to claim 3, it is characterised in that: the signal ratio
It include being coupled to the bleeder circuit (221) of operational amplifier output terminal and being coupled to bleeder circuit (221) compared with module (23)
Comparator, the bleeder circuit (221) include the first resistor and second resistance being serially connected, the first resistor and the second electricity
The resistance value ratio of resistance is (N-1): 1, the bleeder circuit (221) is coupled to the electrode input end of comparator, and the comparator is born
Pole input terminal is coupled to a reference circuit (231), and the reference circuit (231) is for generating reference signal.
5. a kind of lift car weight induction alarm system according to claim 4, it is characterised in that: the benchmark electricity
Road (231) includes the reference resistance for being coupled to external power supply and the protective resistance for being parallel to reference resistance, protective resistance it is another
One end ground connection.
6. a kind of lift car weight induction alarm system according to claim 1, it is characterised in that: the loading plate
(11) support rod (13) for being used to support loading plate (11) is equipped between carriage body (1) inner bottom surface.
7. a kind of lift car weight induction alarm system according to claim 6, it is characterised in that: the support rod
(13) it is set as telescopic rod.
8. a kind of lift car weight induction alarm system according to claim 1, it is characterised in that: the limited block
(12) vertical section is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090409.3U CN209275916U (en) | 2018-12-12 | 2018-12-12 | A kind of lift car weight induction alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090409.3U CN209275916U (en) | 2018-12-12 | 2018-12-12 | A kind of lift car weight induction alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209275916U true CN209275916U (en) | 2019-08-20 |
Family
ID=67610943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822090409.3U Active CN209275916U (en) | 2018-12-12 | 2018-12-12 | A kind of lift car weight induction alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209275916U (en) |
-
2018
- 2018-12-12 CN CN201822090409.3U patent/CN209275916U/en active Active
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