CN107487718B - A kind of load limiter structure of bridge crane - Google Patents
A kind of load limiter structure of bridge crane Download PDFInfo
- Publication number
- CN107487718B CN107487718B CN201710737766.1A CN201710737766A CN107487718B CN 107487718 B CN107487718 B CN 107487718B CN 201710737766 A CN201710737766 A CN 201710737766A CN 107487718 B CN107487718 B CN 107487718B
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- China
- Prior art keywords
- limited rack
- circuit
- rope
- tension sensor
- sensor
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Jib Cranes (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a kind of load limiter structures of bridge crane, including hardware configuration and control module, hardware configuration includes tension sensor, compensating rope and suspension hook rope, the both ends of tension sensor are provided with head support, position-limited rack A and position-limited rack B are provided at the top of tension sensor, the bottom of tension sensor is provided with position-limited rack D and position-limited rack C, between position-limited rack A and position-limited rack B, force button is provided between position-limited rack D and position-limited rack C, and force deduction of points is not buckled in the first sensing section and the second sensing section of sensor internal, the both ends of compensating rope are fixedly connected with fastener head, compensating rope passes through the force button of tension sensor bottom, the force that suspension hook rope sequentially passes through at the top of fastener head and tension sensor is buckled, control module includes interaction circuit, amplifying circuit, ADC conversion circuit, single-chip microcontroller mould Block, warning circuit and overload control circuit, more intelligent intersection control routine, so that the operation is more convenient.
Description
Technical field
The present invention relates to crane technical field, the load limiter structure of specially a kind of bridge crane.
Background technique
Load limiter measures tote weight, instrument real-time display real load, when load reaches by weight sensor
To its rated load setting value when, issue bugle call light alarm signal, and output switch parameter can be provided.Whole system by sensor,
The composition such as connecting cable, microcomputer host, there are two types of forms for the overload limiting mechanism of crane at this stage, and one is in spool shaft
Axis on overload limiter is set, one is sensor is arranged on rope, the detection by sensor to rope pull, from
And stop is carried out to driving motor by stop limits device, same to alarm, and the load limiter of existing sensor type, by
In the reason of the simple tension, it is be easy to cause sensor force offset, to cause the pulling force of rope two sides uneven, while pulling force
The addition of sensor is so that rope shakes.
Summary of the invention
In order to overcome the shortcomings of that prior art, the present invention provide a kind of load limiter structure of bridge crane,
By perfect and control system the design to hardware detection structure, so that the weight in crane limits upper Data Detection and biography
It is defeated more accurate, while more intelligent intersection control routine, so that the operation is more convenient.
The technical solution adopted by the present invention to solve the technical problems is: a kind of load limiter knot of bridge crane
Structure, including hardware configuration and control module, the hardware configuration include tension sensor, compensating rope and suspension hook rope, described
The both ends of tension sensor are provided with head support, and the top left of the tension sensor and centre are respectively arranged with position-limited rack A
With position-limited rack B, the bottom right end of the tension sensor and centre are respectively arranged with position-limited rack D and position-limited rack C, the position-limited rack
Between A and position-limited rack B, between position-limited rack D and position-limited rack C, it is provided with force button, and force deduction of points is not buckled in sensor
Internal the first sensing section and the second sensing section, the both ends of the compensating rope are fixedly connected with fastener head, the compensating rope
Force button across tension sensor bottom, and frame, on position-limited rack D and position-limited rack C, the suspension hook rope sequentially passes through fastening
Force button at the top of head and tension sensor, and suspension hook cable wire frame is on position-limited rack A and position-limited rack B；
The control module includes interaction circuit, amplifying circuit, ADC conversion circuit, one-chip computer module, warning circuit and surpasses
Control circuit is carried, electric signal is transferred to amplifying circuit by the tension sensor, by ADC conversion circuit by the electricity of amplifying circuit
Signal is converted, and the electric signal after conversion is transmitted one-chip computer module, is realized warning circuit by one-chip computer module and is surpassed
Control circuit work is carried, signal show in interaction circuit by warning circuit, and to give one-chip computer module corresponding by interacting circuit
Control signal.
As a kind of technical solution for having choosing of the present invention, the fastener head is internally provided with the inner cavity of calabash shaped, described interior
Top of chamber is equipped with flat-sale, and the two sides of the flat-sale are provided with flank, and the flat-sale is vertically arranged with hex screw.
As a kind of technical solution for having choosing of the present invention, the suspension hook rope is mounted on the top of inner cavity, the compensation steel
The lower part of inner cavity is arranged in rope, and compensating rope is welded on inner cavity.
As a kind of technical solution for having choosing of the present invention, the fastener head is in a circular table shape, and the right end of fastener head only allows
Suspension hook rope passes through.
As a kind of technical solution for having choosing of the present invention, in the position-limited rack A, position-limited rack B, position-limited rack C and position-limited rack D
Between be disposed as smooth arc surface.
As a kind of technical solution for having choosing of the present invention, the tension sensor uses resistance strain sensor, core
The equal arm bridge circuit that part is made of 4 elastoresistance foil gauges.
It include acousto-optic circuit and dial-up input electricity as a kind of technical solution for having choosing of the present invention, inside the interactive circuit
Road two parts.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is in hardware detection structure, by the way that double force buttons are arranged, thus rope stress upper around the home more
Uniformly, so that the rope of suspension hook only receives the effect of gravity and motor pulling force in stress, during avoiding rope from being lifted by crane
The influence of other power causes the phenomenon of detection device detection inaccuracy, and by way of compensating rope, compensates the rope of suspension hook
Side force-bearing situation generates the shift phenomenon of power, by compensation, then than original data processing on the signal processing of sensor
Simply, also the resistance-strain signal transmitting of sensor internal is more accurate, convenient for the first sensing section and second to be sensed to the letter of section
Number carry out coupling transmitting；
(2) present invention is in control module, by the way that more precision and intelligentized sensor signal treatment mechanism is arranged
And single chip control module, to be parsed well to the signal of tension sensor, and by alarming and overloading accordingly
Limiting circuit controls motor, realizes that more intelligent situation is alarmed by detailed alarm module, and by combining hardware
The accurate detection of structure, to keep the overload control of crane and limitation more accurate practical.
Detailed description of the invention
Fig. 1 is hardware detecting module structural schematic diagram of the invention；
Fig. 2 is fastener head structural schematic diagram of the invention；
Fig. 3 is control module schematic diagram of the invention.
In figure: 1- tension sensor；2- position-limited rack A；3- position-limited rack B；4- position-limited rack C；5- position-limited rack D；6- supports；7- is mended
Repay cable wire；8- suspension hook rope；9- fastener head；10- force button；11- first senses section；12- second senses section；21- interacts circuit；
22- amplifying circuit；23-ADC conversion circuit；24- single chip control module；25- warning circuit；26- overload control circuit；91-
Flat-sale；92- hex screw；93- flank；The inner cavity 94-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The explanation of following embodiment be with reference to attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, "upper", " in ", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " side " etc. is only direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, rather than to limit the present invention.
Embodiment:
As shown in Figure 1, the present invention provides a kind of load limiter structure of bridge crane, including hardware configuration and control
Molding block, the hardware configuration include tension sensor 1, compensating rope 7 and suspension hook rope 8, the both ends of the tension sensor 1
It is provided with head support 6, the top left of the tension sensor 1 and centre are respectively arranged with position-limited rack A2 and position-limited rack B3, institute
The bottom right end and centre for stating tension sensor 1 are respectively arranged with position-limited rack D5 and position-limited rack C4, the position-limited rack A2 and limit
Between frame B3, between position-limited rack D5 and position-limited rack C4, it is provided with force button 10, and force button 10 is buckled in sensor respectively
The first sensing section 11 and the second sensing section 12 inside 1, the both ends of the compensating rope 7 are fixedly connected with fastener head 9, the benefit
The force button 10 that cable wire 7 passes through 1 bottom of tension sensor is repaid, and frame is on position-limited rack D5 and position-limited rack C4, the suspension hook rope 8
The force button 10 at 1 top of fastener head 9 and tension sensor is sequentially passed through, and 8 frame of suspension hook cable wire is in position-limited rack A2 and position-limited rack B3
On；
As shown in Fig. 2, the fastener head 9 is internally provided with the inner cavity 94 of calabash shaped, it is equipped at the top of the inner cavity 94 flat
Pin 91, the two sides of the flat-sale 91 are provided with flank 93, and the flat-sale 91 is vertically arranged with hex screw 92；The suspension hook rope
8 are mounted on the top of inner cavity 94, and the lower part of inner cavity 94 is arranged in the compensating rope 7, and compensating rope 7 is welded in inner cavity 94
Portion；The fastener head 9 is in a circular table shape, and the right end of fastener head 9 only allows suspension hook rope 8 to pass through.
As shown in figure 3, the control module includes interaction circuit 21, amplifying circuit 22, ADC conversion circuit 23, single-chip microcontroller
Electric signal is transferred to amplifying circuit 22 by module 24, warning circuit 25 and overload control circuit 26, the tension sensor 1, is led to
It crosses ADC conversion circuit 23 to convert the electric signal of amplifying circuit 22, and the electric signal after conversion is transmitted into one-chip computer module
24, realize that warning circuit 25 and overload control circuit 25 work by one-chip computer module 24, warning circuit 25 shows signal
Interaction circuit 21, and the control signal accordingly of one-chip computer module 24 is given by interaction circuit 21, the load limiter uses
The equal arm bridge circuit that resistance strain sensor is made of as tension sensor, core component 4 elastoresistance foil gauges；Institute
State includes acousto-optic circuit and dial-up input circuit two parts inside interactive circuit 21.
The working principle of the invention: by the easing out line noose of crane in hardware detecting module, made by fastener head
It obtains suspension hook rope and is fixed on the both ends of tension sensor, while compensating rope and suspension hook rope being fixed together, to guarantee
The uniform force of the two, and suspension hook rope and compensating rope buckle fixation by force accordingly, so that force fastens tight button
Firmly first sensing section and second sensing section, crane work when, due to position-limited rack A and position-limited rack B and force padlock tightly hang
There are difference in height between rope hose tool rope, the tension received on suspension hook rope becomes the pressure applied to the first sensing section, thus pulling force
Sensor generates change in electric, while compensating rope equally applies pressure to the second sensing section, after two electric signals are generated
Coupled signal be transferred to the amplifying circuit of control module, and one-chip computer module energy is converted the signal by ADC conversion circuit
The signal enough handled, it is rear by comparing with built-in threshold signal, by driving sound light alarming circuit to show corresponding work shape
State.
Single chip control module and ADC conversion circuit: single-chip microcontroller is the core of entire load limiter.The program uses
Mega16L single-chip microcontroller is as control chip.ATmega16L has the In-System Programmable Flash of 16K byte, 512 bytes
EEPROM, the parameters such as the weight coefficient of limiter, empty cage weight value are stored in EEPROM, and limiter is still after guaranteeing power down booting
It can work normally, 32 universaling I/O ports, parameter can be individually arranged to each port by controlling program, be used in the program
Make the interface of warning circuit, input circuit and single chip communication, Mega16L is selected to make a major reason of control single chip computer just
It is that it has been internally integrated ADC of 10,8 tunnel with optional differential input stage and programmable-gain, integrated ADC can simplify whole
The circuit design of a load limiter and the manufacturing cost for reducing complete machine, the ADC in Mega16L piece is by way of Approach by inchmeal
The analog voltage of input is converted into one 10 digital quantities, further includes a sampling hold circuit inside it, to ensure
It is input to the voltages keep constant of ADC in conversion process, keeps conversion accurate.
Interaction circuit: interaction circuit is made of sound light alarming circuit and 2 part of dial-up input circuit；Wherein sound-light alarm electricity
Road is main to have both sides to act on；First is that issuing early warning and alarm sound and light signal according to weight comparison result；Second is that with
When family carries out the operations such as System self-test, empty cage calibration, weight input and weight calculating, lights corresponding LED and prompted to user.
Sensor: load limiter is using resistance strain sensor as tension sensor, and core component is by 4 elasticity electricity
Hinder the equal arm bridge circuit that foil gauge is constituted.The variation of weight can be converted into the variation of voltage using equal arm bridge circuit.
For resistance strain gage when not by external force, 4 resistor disc resistance values are equal, and electric bridge is in equilibrium state, and the output of electric bridge both ends is zero.When
Foil gauge, which generates deformation, when stress causes resistance value to change, to make bridge circuit disequilibrium, has external power in electric bridge
In the case where power supply, electric bridge can generate small voltage difference, can be detected by the big of measured weight using the size of the voltage difference
Small, the precision of detection is up to 0.2%.
In conclusion the main characteristic of the invention lies in that: (1) present invention is in hardware detection structure, by the way that double apply is arranged
Power button, thus rope around the home on be more uniformly stressed so that the rope of suspension hook only receives gravity and motor in stress and draws
The effect of power, the influence of other power during avoiding rope from being lifted by crane causes the phenomenon of detection device detection inaccuracy, and leads to
The form of overcompensation cable wire compensates the rope side force-bearing situation of suspension hook, generates the shift phenomenon of power, by compensation, is then passing
Simpler than original data processing on the signal processing of sensor, also the resistance-strain signal transmitting of sensor internal is more accurate,
Convenient for the signal of the first sensing section and the second sensing section is carried out coupling transmitting；The present invention in control module, by setting compared with
For precision and intelligentized sensor signal treatment mechanism and single chip control module, thus well to tension sensor
Signal is parsed, and is controlled by alarm accordingly and the limiting circuit that overloads motor, and detailed alarm module is passed through
More intelligent situation alarm, and the accurate detection by combining hardware configuration are realized, so that the overload of crane be made to control and limit
System is more accurate practical.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (7)
1. a kind of load limiter structure of bridge crane, including hardware configuration and control module, it is characterised in that: described hard
Part structure includes tension sensor (1), compensating rope (7) and suspension hook rope (8), and the both ends of the tension sensor (1) are all provided with
It is equipped with head support (6), the top left of the tension sensor (1) and centre are respectively arranged with position-limited rack A (2) and position-limited rack B
(3), the bottom right end of the tension sensor (1) and centre are respectively arranged with position-limited rack D (5) and position-limited rack C (4), the limit
Between position frame A (2) and position-limited rack B (3), between position-limited rack D (5) and position-limited rack C (4), it is provided with force button (10), and described
Force button (10) is buckled in internal the first sensing section (11) and the second sensing section (12) of sensor (1), the compensating rope respectively
(7) both ends are fixedly connected with fastener head (9), and the compensating rope (7) passes through the force button of tension sensor (1) bottom
(10), and frame is on position-limited rack D (5) and position-limited rack C (4), and the suspension hook rope (8) sequentially passes through fastener head (9) and pulling force passes
Force button (10) at the top of sensor (1), and suspension hook cable wire (8) frame is on position-limited rack A (2) and position-limited rack B (3)；
The control module include interaction circuit (21), amplifying circuit (22), ADC conversion circuit (23), one-chip computer module (24),
Electric signal is transferred to amplifying circuit (22) by warning circuit (25) and overload control circuit (26), the tension sensor (1), is led to
It crosses ADC conversion circuit (23) to convert the electric signal of amplifying circuit (22), and the electric signal after conversion is transmitted into single-chip microcontroller
Module (24) realizes warning circuit (25) and overload control circuit (25) work, warning circuit by one-chip computer module (24)
(25) signal is shown in interaction circuit (21), and gives one-chip computer module (24) control letter accordingly by interaction circuit (21)
Number.
2. a kind of load limiter structure of bridge crane according to claim 1, it is characterised in that: the fastener head
(9) it is internally provided with the inner cavity (94) of calabash shaped, is equipped with flat-sale (91) at the top of the inner cavity (94), the two of the flat-sale (91)
Side is provided with flank (93), and the flat-sale (91) is vertically arranged with hex screw (92).
3. a kind of load limiter structure of bridge crane according to claim 2, it is characterised in that: the easing out line
Rope (8) is mounted on the top of inner cavity (94), and compensating rope (7) setting is in the lower part of inner cavity (94), and compensating rope (7) welds
It connects internal in inner cavity (94).
4. a kind of load limiter structure of bridge crane according to claim 2, it is characterised in that: the fastener head
(9) in a circular table shape, and the right end of fastener head (9) only allows suspension hook rope (8) to pass through.
5. a kind of load limiter structure of bridge crane according to claim 1, it is characterised in that: the position-limited rack
A (2), position-limited rack B (3), position-limited rack C (4) and position-limited rack D (5) centre be disposed as smooth arc surface.
6. a kind of load limiter structure of bridge crane according to claim 1, it is characterised in that: the pulling force passes
Sensor (1) uses resistance strain sensor, the equal arm bridge circuit that core component is made of 4 elastoresistance foil gauges.
7. a kind of load limiter structure of bridge crane according to claim 1, it is characterised in that: the interaction electricity
It include acousto-optic circuit and dial-up input circuit two parts inside road (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710737766.1A CN107487718B (en) | 2017-08-24 | 2017-08-24 | A kind of load limiter structure of bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710737766.1A CN107487718B (en) | 2017-08-24 | 2017-08-24 | A kind of load limiter structure of bridge crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107487718A CN107487718A (en) | 2017-12-19 |
| CN107487718B true CN107487718B (en) | 2019-03-22 |
Family
ID=60646652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710737766.1A Active CN107487718B (en) | 2017-08-24 | 2017-08-24 | A kind of load limiter structure of bridge crane |
Country Status (1)
| Country | Link |
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| CN (1) | CN107487718B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468636B (en) * | 2022-10-10 | 2023-07-07 | 松诺盟科技有限公司 | High-precision nano film lifting capacity limiter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2533178C2 (en) * | 1974-07-31 | 1984-07-05 | Alsthom-Unelec S.A., 75116 Paris | Load limiter for a hoist |
| CN87210485U (en) * | 1987-08-25 | 1988-12-14 | 郑锡铎 | Overload limiter of hoisting machinery |
| BE1001803A6 (en) * | 1988-06-15 | 1990-03-13 | Roussel Antoine | Adapter for a cable winch load limiter |
| CN2583059Y (en) * | 2002-07-25 | 2003-10-29 | 广州建力工程机械公司 | Construction lifter load carrying ability limiting apparatus |
| DE102007062823A1 (en) * | 2007-12-21 | 2009-08-20 | Rag Aktiengesellschaft | Zugkraftbegrenzer |
| CN201473214U (en) * | 2009-05-27 | 2010-05-19 | 敖贵华 | Lifting weight limiter |
| CN201762052U (en) * | 2010-06-30 | 2011-03-16 | 陈志强 | Hoisting-capacity limiter |
| CN205709607U (en) * | 2016-07-01 | 2016-11-23 | 湖北鄂南起重运输机械有限公司 | A kind of steel wire end fixing device of belt sensor |
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2017
- 2017-08-24 CN CN201710737766.1A patent/CN107487718B/en active Active
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| CN107487718A (en) | 2017-12-19 |
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Effective date of registration: 20190225 Address after: 241000 Sane Road, Sanshan District, Wuhu City, Anhui Province Applicant after: Wuhu Hui Yu commerce Co., Ltd. Address before: 241080 No. 8 Eqiao Road, Sanshan Economic Development Zone, Wuhu City, Anhui Province Applicant before: Wuhu Changjiang Jack-up Equipment Co., Ltd. |
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