CN102261888A - Method and system for measuring displacement of working device for engineering machinery - Google Patents
Method and system for measuring displacement of working device for engineering machinery Download PDFInfo
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- CN102261888A CN102261888A CN 201010195184 CN201010195184A CN102261888A CN 102261888 A CN102261888 A CN 102261888A CN 201010195184 CN201010195184 CN 201010195184 CN 201010195184 A CN201010195184 A CN 201010195184A CN 102261888 A CN102261888 A CN 102261888A
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Abstract
The invention discloses a system for measuring the displacement of a working device for engineering machinery. The system comprises a measurement coded disk, a proximity switch, a pressure switch, a controller and a display, wherein the measurement coded disk is arranged on a pulley of the engineering machinery and rotates coaxially with the pulley; the proximity switch is used for sensing the tooth form of the measurement coded disk and generating high and low levels; the pressure switch is used for detecting whether an oil path which controls main winding motion has an oil pressure; if the oil path has the oil pressure, the pressure switch is turned on, and if the oil path does not have the oil pressure, the pressure switch is turned off; the controller is used for monitoring the turning-on or turning-off of the pressure switch to obtain the movement direction of the working device and monitoring the total quantity of the high and low levels to obtain a displacement value of the working device which moves along the movement direction; and the display is used for outputting the displacement value.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to the equipment displacement measurement method and the system that are used on the engineering machinery.
Background technology
Engineering machinery is the general name that is used for the construction machinery of engineering construction, is widely used in engineering fields such as building, water conservancy, electric power, road, mine, harbour and national defence, and is of a great variety.
According to the working range difference, engineering machinery is divided into number of different types equipment, as rotary drilling rig, electric liquid stake machine, continuous wall grab and crane.Above-mentioned these equipment all adopt wire rope and pulley mode Control work device to carry out work.Concrete, wire rope roll is on master winch, and an end links to each other with equipment after passing pulley, by the direction of motion of guide's oil circuit control master winch, and then the moving direction of Control work device.
In order in time to know the progress of work of equipment, generally need the moving displacement of its equipment of monitoring in real time, in the prior art, adopt toothed measurement code-disc and two to measure usually near the switch cooperating.Wherein: but measure code-disc and wire rope pulley coaxial rotation, two near switch perpendicular to measuring the code-disc plane, and aim at the gear of this measurement code-disc.
Concrete, wire rope moves through and drives pulley and rotate and then drive and measure code-disc and rotate, and at this moment, responds to the gear of the measurement code-disc of rotation respectively near switch for two, and then draws two waveforms that differ 90 degree.Controller is judged the direction and the waveform pulse number of pulley motion by detecting these two waveforms, obtains displacement measurement at last and transfer to display showing.
Two waveforms near switch have only and just in time differ 90 degree, and the displacement measurement that is drawn just accurately.But, because the engineering machinery work under bad environment, vibrations bigger, two near the constantly variation of distance between switch and the measurement code-disc, thus, two are difficult to assurance near differing of the resulting waveform of switch and just in time differ 90 degree, the also just very difficult accuracy that guarantees measured displacement measurement.
Summary of the invention
In view of this, the invention provides a kind of equipment displacement measurement method and system that is used on the engineering machinery, to solve existing displacement measurement method inaccurate problem of measured value when working environment is relatively poor.
For addressing the above problem, the technical scheme of proposition is as follows:
A kind of equipment displacement measurement system that is used on the engineering machinery comprises: be arranged on the pulley of described engineering machinery and with the measurement code-disc of its coaxial rotation, near switch, pressure switch, controller and display, wherein:
Described near switch, be used to respond to described measurement code-disc profile of tooth and generate high and low level;
Described pressure switch, whether be used for detecting guide's oil circuit of controlling the master winch motion has oil pressure, if oil pressure is arranged, then conducting, otherwise, not conducting;
Described controller is used to monitor the situation of described pressure switch conducting, obtains the moving direction of described equipment, monitors the total quantity of described high and low level, obtains the shift value that described equipment moves along moving direction;
Described display is used to export described shift value.
Preferably, described pressure switch is arranged on first guide's oil circuit of the described master winch forward travel of described control, and/or is arranged on second guide's oil circuit of the described master winch setback of described control.
Preferably, on the described pulley bracket that is arranged at described engineering machinery near switch.
A kind of equipment displacement measurement method that is used on the engineering machinery comprises:
Measurement of inductance code-disc profile of tooth generates high and low level;
Pressure switch detects guide's oil circuit of control master winch motion, if detect oil pressure is arranged, this pressure switch conducting, otherwise, this not conducting of pressure switch;
Monitor described pressure switch conducting situation, obtain the moving direction of described equipment, monitor the total quantity of described high and low level, obtain the shift value that described equipment moves along moving direction, and output.
Preferably, measurement of inductance code-disc profile of tooth generates high and low level and is:
Responding to described measurement code-disc is double wedge, generates high level, and not sensing described measurement code-disc is double wedge, generates low level;
Perhaps, responding to described measurement code-disc is double wedge, generates low level, and not sensing described measurement code-disc is double wedge, generates high level.
Preferably, guide's oil circuit of described control master winch motion comprises first guide's oil circuit of control master winch forward travel and second guide's oil circuit of control master winch setback.
Preferably, when described pressure switch detected first guide's oil circuit the oil pressure conducting is arranged, the moving direction of described equipment was a working direction, and when described not conducting of pressure switch, the moving direction of described equipment is a direction of retreat.
Preferably, when described pressure switch detected second guide's oil circuit the oil pressure conducting is arranged, the moving direction of described equipment was a direction of retreat, and when described not conducting of pressure switch, the moving direction of described equipment is a working direction.
Preferably, described pressure switch comprises first pressure switch and second pressure switch, wherein:
Described first pressure switch is used to detect first guide's oil circuit, if this first pressure switch conducting, the moving direction of described equipment is a working direction;
Described second pressure switch is used to detect second guide's oil circuit, if this second pressure switch conducting, the moving direction of described equipment is a direction of retreat.
Preferably, the shift value that obtains described equipment according to the total quantity of described high and low level is: do with the width of the total quantity of described high and low level and the single double wedge of described measurement code-disc and take advantage of.
From above-mentioned technical scheme as can be seen, the equipment displacement measurement system that is used on the engineering machinery disclosed by the invention, measure the profile of tooth of code-disc according to one near inductive switching, and generate high and low level, calculate the moving displacement of equipment according to the quantity of high and low level; Simultaneously, by monitoring pressure switch whether conducting can judge the direction of motion of master winch, promptly can obtain the moving direction of equipment.Owing to only calculate the equipment displacement with one near on-off gauge, its measurement of inductance code-disc profile of tooth generates the high-low level process and is not affected by the external environment, and has solved existing displacement measurement method inaccurate problem of measured value when working environment is relatively poor.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed a kind of structural representation that is used for the equipment displacement measurement system on the engineering machinery of the embodiment of the invention;
Fig. 2 is the disclosed a kind of process flow diagram that is used for the equipment displacement measurement method on the engineering machinery of the embodiment of the invention;
Fig. 3 is the disclosed a kind of process flow diagram that is used for the equipment displacement measurement method on the engineering machinery of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention discloses a kind of equipment displacement measurement method and system that is used on the engineering machinery, to solve existing displacement measurement method inaccurate problem of measured value when working environment is relatively poor.
Below describe respectively by two embodiment.
As shown in Figure 1, the described equipment displacement measurement system that is used on the engineering machinery comprises: measure code-disc 3, near switch 4, pressure switch 7, controller 9 and display 10, wherein:
Measure code-disc 3 and be arranged on the pulley 1, can with pulley 1 coaxial rotation, concrete, measure code-disc 3 excircles be provided with equidistantly, with the double wedge of shape, and can and rotate along with pulley 1 rotation;
Near switch 4, be used for measurement of inductance code-disc 3 profiles of tooth and generate high and low level;
Concrete, master winch 6 is a cylinder, is wound with wire rope on it, one end of wire rope passes pulley 1 and links to each other with equipment 5, according to the moving direction difference of the handle in the engineering machinery driving cabin 8, can control the direction of motion of master winch 6, and then the moving direction of Control work device 5.
The control oil channel of master winch 6 is divided into two, one tunnel first guide's oil circuit for its forward travel of control, one tunnel second guide's oil circuit for its setback of control.Pressure switch 7 can be arranged at first guide's oil circuit or be arranged on second guide's oil circuit, can certainly adopt two pressure switches to be arranged at respectively on the two-way guide oil circuit; And be generally positioned on the pulley bracket 2 near switch 4.
Use the described equipment displacement measurement system that is used on the engineering machinery to carry out the method for displacement measurement, describe by following examples.
As shown in Figure 2, the described equipment displacement measurement method that is used on the engineering machinery comprises:
Step S11, measurement of inductance code-disc profile of tooth generate high and low level;
Master winch motion, the wire rope of reeling on it moves, and, moves it in equipment by pulley action.Since pulley be provided with can with the measurement code-disc of its coaxial rotation, and this measurement code-disc be provided with excircle be provided with equidistantly, with the double wedge of shape.
Concrete, generate high and low level mode can for: responding to described measurement code-disc is double wedge, generates high level, and not sensing described measurement code-disc is double wedge, generates low level;
Perhaps, responding to described measurement code-disc is double wedge, generates low level, and not sensing described measurement code-disc is double wedge, generates high level.
Step S12, pressure switch detect guide's oil circuit of control master winch motion, if detect oil pressure are arranged, this pressure switch conducting, otherwise, this not conducting of pressure switch;
Pressure switch specifically is arranged on guide's oil circuit, be a kind of simple pressure control device, its principle of work is: when by the measuring pressure overrate, the free end of flexible member produces displacement, directly or after relatively promote on-off element, change the on off operating mode of on-off element.Be provided with when having oil pressure in the control guide oil circuit of pressure switch, pressure switch be switched on so that electric, otherwise, must not be switched on.
Step S13, the described pressure switch conducting situation of monitoring obtain the moving direction of described equipment, monitor the total quantity of described high and low level, obtain the shift value that described equipment moves along moving direction,
Concrete, the method that obtains described equipment moving displacement according to the total quantity of described high and low level is: do with the width of the total quantity of described high and low level and the single double wedge of described measurement code-disc and take advantage of.
Suppose:, write down the quantity of the each high or low level that arrives near inductive switching with a counter variable N; If measure code-disc one circle K tooth, wire rope pulley perimeter L, the then shift value=L of equipment * N/K are arranged.Wherein: L/K indicates the width of the single double wedge of described measurement code-disc.
Step S14, export described shift value.
Along with the continuous work of engineering machinery, promptly, detect in real time near switch and pressure switch along with the continuous of equipment moved, generate measuring-signal, promptly said process is cyclic process, till this end-of-job.
In foregoing, because guide's oil circuit of control master winch motion is divided into two, first guide's oil circuit, second guide's oil circuit that another retreats for the control master winch for the forward travel of control master winch.Specifically pressure switch can be arranged at any one in these two guide's oil circuits, also two pressure switches can be arranged at respectively on two guide's oil circuits, below describe respectively.
When pressure switch only is arranged on first guide's oil circuit, detect the oil pressure situation on this guide's oil circuit, if detected oil pressure, the pressure switch conducting, at this moment, master winch moves along working direction, promptly carries out and transfers the equipment operation, the shift value of the equipment that controller calculates constantly increases, and output constantly increases at the shift value of display; If pressure switch does not detect on first guide's oil circuit oil pressure is arranged, then not conducting, at this moment, master winch moves along direction of retreat, promptly carry out promoting the equipment operation, the shift value of the equipment that controller calculates constantly reduces, and output constantly reduces in the displacement of display.
Equally, when pressure switch only is arranged on second guide's oil circuit, detect the oil pressure situation on this guide's oil circuit, if detected oil pressure, the pressure switch conducting, at this moment, master winch moves along direction of retreat, promptly carry out promoting the equipment operation, the shift value of the equipment that controller calculates constantly reduces, and output constantly reduces at the shift value of display; If pressure switch does not detect on second guide's oil circuit oil pressure is arranged, then not conducting, at this moment, master winch moves along working direction, promptly carry out and transfer the equipment operation, the shift value of the equipment that controller calculates constantly increases, and output constantly increases in the displacement of display.
When having two pressure switches to be arranged on the two-way guide oil circuit respectively respectively, concrete, first pressure switch is arranged at first guide's oil circuit, and whether detect it has oil pressure; Second pressure switch is arranged on second guide's oil circuit, and whether detecting device has oil pressure.
At this moment, be used for the measuring method of the equipment displacement on the engineering machinery, as shown in Figure 3, comprise:
Step S21, measure the code-disc profile of tooth near inductive switching and generate high and low level;
Equally, generate high and low level mode can for: responding to described measurement code-disc is double wedge, generates high level, and not sensing described measurement code-disc is double wedge, generates low level;
Perhaps, responding to described measurement code-disc is double wedge, generates low level, and not sensing described measurement code-disc is double wedge, generates high level.
Step S22, first pressure switch detect first guide's oil circuit, and second pressure switch detects second guide's oil circuit, if detect oil pressure are arranged, pressure switch conducting corresponding with it, otherwise, not conducting;
Step S23, monitor the conducting situation of described first pressure switch and second pressure switch respectively, obtain the moving direction of described equipment, monitor the total quantity of described high and low level, obtain the shift value that described equipment moves along moving direction;
Equally, the method that obtains described equipment moving displacement according to the total quantity of described high and low level is: do with the width of the total quantity of described high and low level and the single double wedge of described measurement code-disc and take advantage of.
Step S24, export described shift value.
Concrete, in single job, described first guide's oil circuit and second guide's oil circuit can only have oil pressure by one of them guide's oil circuit, be described first pressure switch and second pressure switch have only one can conducting, when the first pressure switch conducting, master winch is transferred equipment along forward direction motion, the shift value of the equipment that controller calculates constantly increases, and output constantly increases at the shift value of display; When the second pressure switch conducting, master winch moves along direction of retreat, promotes equipment, and the shift value of the equipment that controller calculates constantly reduces, and output constantly reduces in the displacement of display.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. an equipment displacement measurement system that is used on the engineering machinery is characterized in that, comprising: be arranged on the pulley of described engineering machinery and with the measurement code-disc of its coaxial rotation, near switch, pressure switch, controller and display, wherein:
Described near switch, be used to respond to described measurement code-disc profile of tooth and generate high and low level;
Described pressure switch, whether be used for detecting guide's oil circuit of controlling the master winch motion has oil pressure, if oil pressure is arranged, then conducting, otherwise, not conducting;
Described controller is used to monitor the situation of described pressure switch conducting, obtains the moving direction of described equipment, monitors the total quantity of described high and low level, obtains the shift value that described equipment moves along moving direction;
Described display is used to export described shift value.
2. system according to claim 1 is characterized in that, described pressure switch is arranged on first guide's oil circuit of the described master winch forward travel of described control, and/or is arranged on second guide's oil circuit of the described master winch setback of described control.
3. system according to claim 1 is characterized in that, on the described pulley bracket that is arranged at described engineering machinery near switch.
4. an equipment displacement measurement method that is used on the engineering machinery is characterized in that, comprising:
Measurement of inductance code-disc profile of tooth generates high and low level;
Pressure switch detects the oil circuit of control master winch motion, if detect oil pressure is arranged, this pressure switch conducting, otherwise, this not conducting of pressure switch;
Monitor described pressure switch conducting situation, obtain the moving direction of described equipment, monitor the total quantity of described high and low level, obtain the shift value that described equipment moves along moving direction, and output.
5. method according to claim 4 is characterized in that, measurement of inductance code-disc profile of tooth generates high and low level and is:
Responding to described measurement code-disc is double wedge, generates high level, and not sensing described measurement code-disc is double wedge, generates low level;
Perhaps, responding to described measurement code-disc is double wedge, generates low level, and not sensing described measurement code-disc is double wedge, generates high level.
6. method according to claim 4 is characterized in that, the oil circuit of described control master winch motion comprises first guide's oil circuit of control master winch forward travel and second guide's oil circuit of control master winch setback.
7. method according to claim 6, it is characterized in that when described pressure switch detected first guide's oil circuit the oil pressure conducting is arranged, the moving direction of described equipment was a working direction, when described not conducting of pressure switch, the moving direction of described equipment is a direction of retreat.
8. method according to claim 6, it is characterized in that when described pressure switch detected second guide's oil circuit the oil pressure conducting is arranged, the moving direction of described equipment was a direction of retreat, when described not conducting of pressure switch, the moving direction of described equipment is a working direction.
9. method according to claim 6 is characterized in that, described pressure switch comprises first pressure switch and second pressure switch, wherein:
Described first pressure switch is used to detect first guide's oil circuit, if this first pressure switch conducting, the moving direction of described equipment is a working direction;
Described second pressure switch is used to detect second guide's oil circuit, if this second pressure switch conducting, the moving direction of described equipment is a direction of retreat.
10. according to any described method in the claim 4 to 9, it is characterized in that the shift value that obtains described equipment according to the total quantity of described high and low level is: do with the width of the total quantity of described high and low level and the single double wedge of described measurement code-disc and take advantage of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101951843A CN102261888B (en) | 2010-05-31 | 2010-05-31 | Method and system for measuring displacement of working device for engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101951843A CN102261888B (en) | 2010-05-31 | 2010-05-31 | Method and system for measuring displacement of working device for engineering machinery |
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| Publication Number | Publication Date |
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| CN102261888A true CN102261888A (en) | 2011-11-30 |
| CN102261888B CN102261888B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101951843A Expired - Fee Related CN102261888B (en) | 2010-05-31 | 2010-05-31 | Method and system for measuring displacement of working device for engineering machinery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147361A (en) * | 2020-10-16 | 2020-12-29 | 北京三一智造科技有限公司 | Steel wire rope winding parameter calculation method and winding machine equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86204714U (en) * | 1986-10-22 | 1987-10-28 | 陆章荣 | Digital display device for measuring displacement of moving parts on machine tool |
| CN2153772Y (en) * | 1993-05-10 | 1994-01-19 | 高秀珍 | Displacement measuring counter |
| CN101226110A (en) * | 2007-12-28 | 2008-07-23 | 上海市特种设备监督检验技术研究院 | Device and method for detecting descending braking distance of bridge crane hoisting mechanism |
-
2010
- 2010-05-31 CN CN2010101951843A patent/CN102261888B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86204714U (en) * | 1986-10-22 | 1987-10-28 | 陆章荣 | Digital display device for measuring displacement of moving parts on machine tool |
| CN2153772Y (en) * | 1993-05-10 | 1994-01-19 | 高秀珍 | Displacement measuring counter |
| CN101226110A (en) * | 2007-12-28 | 2008-07-23 | 上海市特种设备监督检验技术研究院 | Device and method for detecting descending braking distance of bridge crane hoisting mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147361A (en) * | 2020-10-16 | 2020-12-29 | 北京三一智造科技有限公司 | Steel wire rope winding parameter calculation method and winding machine equipment |
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