The elevator wire rope displacement measuring device
Technical field
The present invention relates to a kind of elevator wire rope displacement measuring device, more particularly, is a kind of traction steel-cable of elevator or the displacement that speed limiter wire rope is in operation and measuring instrument of linear velocity of detecting.
Background technology
The running velocity of elevator is lift car upstream or downstream speed, is one of most important elevator test item.Because elevator traction steel rope or speed limiter wire rope are connected with car respectively, so can obtain the running velocity of elevator indirectly through measuring the displacement of traction steel-cable or speed limiter wire rope.The method of inspection of prior art is following:
1. by " elevator test method " GB/T10059-2009, use speed gage record motor speed and be calculated as follows cage operation speed:
In the formula: v-cage operation speed, m/s;
D-traction sheave pitch diameter, mm;
N-surveys motor speed, r/min;
I-towing machine reduction ratio;
The i-traction ratio.
2. use elevator speed meter (being commonly called as speed gage) to measure; For example use EC-2100 or EC-900 elevator speed meter; The peripheral speed ring (being commonly called as the roller that tests the speed) of speed gauge is contacted with operating elevator traction steel rope or speed limiter wire rope lightly, can measure the linear velocity of steel rope.
State on the implementation in the detection, measurement mechanism need well contact with tested mechanism, and by the hand-held detecting instrument operation of inspector, its operant level directly influences accuracy of detection usually; The wearing and tearing of peripheral speed ring and skid and also can cause the detection error.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of novel elevator wire rope displacement measurement mechanism that adopts the optical imagery detection technique is provided.
The present invention is achieved through following technical proposals: the elevator wire rope displacement measuring device is made up of ccd sensor, DSP image processing system, displacement data reception and disposal system, power supply and instrument calibration etc., on instrument calibration, is provided with the track adjusting wheel with grooving; Said ccd sensor and DSP image processing system are made up of optical mouse chip assembly etc.
The present invention is all right: in the member of track adjusting wheel, use the magnetic material manufacturing, track adjusting wheel has magnetic attraction to tested steel rope.Use Agilent laser engine mouse chip in the said optical mouse chip assembly, the spacing of its optical lens to tested steel rope external diameter is set to 2 to 3mm.
Compared with prior art, the invention has the beneficial effects as follows: detecting device and tested steel rope are realized noncontacting measurement, and easy and simple to handle, accuracy of detection is higher.
Description of drawings
Fig. 1 is the structural representation of elevator wire rope displacement measuring device of the present invention.
Fig. 2 is the track adjusting wheel structural section of the embodiment of the invention
Fig. 3 is the installation site cutaway view of the optical mouse chip assembly of the embodiment of the invention.
Among the figure: 1. elevator traction is taken turns or governor sheave, 2. track adjusting wheel, 3. instrument stand, 4. optical mouse chip assembly, 5. displacement data reception and disposal system; 6. power supply, 7. elevator wire rope, 8. track adjusting wheel steel body, 9. magnet steel; 11. axle, 12. bearings, 13. circular optical lenses, 14. mouse chips.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
In Fig. 1, shown elevator wire rope displacement measuring device is received with disposal system 5, track adjusting wheel 2, power supply 6 and instrument stand 3 etc. by optical mouse chip assembly 4, displacement data to be formed.Optical mouse chip assembly 4, is measured the displacement state of steel rope near the side to elevator wire rope 7 through track adjusting wheel 2, testing result is sent to displacement data in real time receives and disposal system 6.
Use the displacement state of 4 pairs of steel ropes of optical mouse chip assembly to implement to measure among the present invention.The market orientation of optical mouse chip also can be developed the mobile no touch displacement detecting that applies to industrial circle to the general computer mouse.Optical mouse chip comprises basic modules such as image picking system, dsp processor, output translator.Its bottom is provided with an optical lens as the small-sized image pickup head; Image picking system can be taken pictures to body surface through optical lens incessantly; And graphicinformation is sent to dsp processor; Dsp processor can draw the direction and the displacement data of ohject displacement through to previous moment and the comparison of current time graphicinformation.
In embodiment illustrated in fig. 2; Magnet steel 9 has been inlayed in the both sides of track adjusting wheel steel body 8; Make track adjusting wheel have magnetic attraction to tested steel rope, the track adjusting wheel during its purpose is to implement to detect relies on magnetic attraction near tested steel rope, supports the mutual alignment that measurement mechanism and tested steel rope keep regulation.Track adjusting wheel is installed on the instrument stand 3 through axle 11, bearing 12.
In the embodiment shown in fig. 3, mouse chip 14 has been used the new laser engine ADNS-9800 that releases of Agilent company, in its bottom circular optical lens 13 is installed, and its model is ADNS-6190-002.The spacing of circular optical lens 13 to tested steel rope external diameter is set to 2.4mm.This chip adopts advanced 832-865nm wavelength VCESL technology, supports the smooth metal character of surface to detect; Have 150ips (inch per second) velocity of displacement and 30g acceleration/accel, up to detectabilities such as 5670dpi (dots per inch) resolutions.
More than combine accompanying drawing and embodiment that the present invention has been carried out launching to describe, this description does not have restricted, is the embodiment that the present invention constitutes shown in the accompanying drawing yet, and technical scheme of the present invention is not limited thereto.Those of ordinary skill in the art should be understood that under the situation that does not break away from design philosophy of the present invention, actual enforcement of the present invention also has the variation on some details.So as long as aim according to the invention, these variations include within protection scope of the present invention.