CN106697846A

CN106697846A - Safety emergency control system of conveyor

Info

Publication number: CN106697846A
Application number: CN201710063945.1A
Authority: CN
Inventors: 吴联凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-21
Filing date: 2015-04-21
Publication date: 2017-05-24
Anticipated expiration: 2035-04-21
Also published as: CN106628943B; CN106697846B; CN106628943A; CN104828516B; CN104828516A

Abstract

The invention relates to a safety emergency control system of a conveyor. The safety emergency control system comprises a conveyor drum bearing online monitoring part and a conveyor safety emergency part, and is characterized in that the conveyor drum bearing online monitoring part comprises an axial displacement monitoring part and a radial displacement monitoring part; the conveyor safety emergency part comprises a drum brake; the conveyor drum bearing online monitoring part comprises a motor, a coupling, a left support bearing, an axial displacement sensor, an axial displacement bearing disc, a radial displacement sensor, a right support bearing, a driving chain, and a drum shaft; the motor is used for driving the drum shaft to rotate through the coupling, the drum shaft is supported between the left support bearing and the right support bearing, and the drum is arranged on the drum shaft, and is matched with the left support bearing and the right support bearing. The safety emergency control system has the advantage that the bearing with the driving function is monitored on line, and the affected safety emergency control system is started, so as to ensure the safety of the whole device.

Description

The safe emergency flight control system of conveyer

Technical field

The present patent application is the divisional application of application number 201510188316.2.Conveyed for monitoring the present invention relates to one kind The device of equipment, more particularly it relates to on-line monitoring and safe emergency flight control system for conveying device roller bearings System.

Background technology

In the prior art, belt conveyor and roller conveyor generally all carry out power transmission using roller, and roller is then On rolling bearing.At present, on-line monitoring research and development of each industrial and mining enterprises to conveying device are more ripe, for example, using light Electric system particularly carries out optical detection to conveyer belt loading end and/or rolling surface to loading end, wherein to operationally occurring Damage be identified and sent when conveyer belt critical condition is reached the sound and/or optics alarm signal and/or particularly promote Conveying equipment is set to disconnect automatically.

And for example, in roller class conveyer, roller chain connection, chain is driven by top drive sprocket wheel.Normal condition The gear of lower chain and drive chain is to be fitted close to ensure the normal operation of chain each other, however, in the reality of reality In, because whole chain does not prevent chain from jumping the device of tooth during sprocket wheel is operated, therefore sometimes in material transportation During due to weight of material, component of machine failure, drive system is aging the problems such as, it may occur that chain is jumped at drive sprocket The relative position of the problem of tooth, chain and drive sprocket is changed, and causes the accident, and such chain is jumped tooth failure and can be made Into chain bucket rear portion steel plate deformed, whole equipment can be damaged when serious, must not cause and be changed without, greatly affected production operation and enter Degree, causes unnecessary economic loss, therefore shows the supervising device that anti-chain is deviate from this kind of conveyer at present, can effectively supervise Working condition between control chain and drive sprocket, when there is problem, can and alarm send stopping signal, and need the safety can Lean on, strong antijamming capability.

And for example, in belt conveyor and roller conveyor, on-line monitoring system can in real time be supervised to whole equipment Survey, so as to reach the purpose of security control, but this on-line monitoring system is complex, and its is relatively costly.

In terms of the monitoring for bearing, mostly in currently available technology is that bearing to be measured is filled mounted in special Bearing testing Put, carry out the fault diagnosises such as antifatigue, damage.It is more ripe that this technology develops at present, common are, by high ferro The bearing removal of wheel gets off or before the bearing is assembled on axletree, and the bearing or axletree are arranged on into special On bearing detecting device, bearing to be measured is tested by the special bearing monitoring device then, so as to obtain bearing Relevant parameter, and then judge the working condition of bearing.This detection method is Bearing testing method conventional at present, is characterized in Traditional artificial percussion detection mode is instead of, the accuracy of detection is improve, but this mode is still based on perfect condition Under static test mode carry out Bearing testing, and generally need to be dismantled on bearing to be measured, even if or do not enter Row bearing removal, it is also desirable to which on the testing equipment that whole wheel is placed to axle, thus detection method is more complicated.

Research shows that conveying device achieves length in terms of safety detection at present as one kind of mechanical device Fail to cause enough attention in the progress of foot, but emergency flight control on the on-line monitoring of roller bearings and after conveyer stop. Especially with the development of society, the application of conveyer is more and more extensive, wherein applies large quantities of in mine etc. belt conveyor more Measure in the continuous conveying of material, the features such as have quality big due to the material of continuous permission and the conveying of belt conveyor, must The safe operation of conveying device must be ensured using corresponding on-line monitoring system, but conveyer is subject to online in the process of running After the controlling alarm of monitoring system, in order to ensure situations such as operating personnel occur jerk safely, conveyer now is due to being Random to stop, for the safety of operating personnel, equipment at this moment typically can all cut off electrical source of power and enter emergency rating, but such as Fruit conveyer once restores electricity suddenly and has no omen ground and operate again, it is likely that cause personnel to maintenance and operating personnel Safety.

The present invention is directed to propose the system that a kind of conveying device roller bearings carry out dynamic on-line monitoring/monitoring, particularly That the present invention has been directed to the bearing of driving effect and has been monitored on-line emphatically, and start the safe emergency flight control system of influence from And ensure the security of whole device.

The content of the invention

The problem existed to prior art, the logical purpose of the present invention there are provided a kind of safe emergency flight control system of conveyer System.

To achieve the above object, the technical solution adopted by the present invention is：Including converyor roller bearing on-line monitoring portion and Conveyer emergent portion safely, it is characterised in that the converyor roller bearing on-line monitoring portion include axial displacement monitoring portion and Radial displacement monitoring portion, emergent portion includes roller band-type brake to the conveyer safely.

Further, the converyor roller bearing on-line monitoring portion includes motor, shaft coupling, left end support bearing, axle To displacement transducer, axial displacement carrier, radial displacement transducer, right-hand member spring bearing, drive chain, drum shaft, motor Drum shaft is driven to rotate by shaft coupling, drum shaft is supported between left end support bearing and right-hand member spring bearing, roller is installed On drum shaft, and it is engaged with left end support bearing and right-hand member spring bearing, axial displacement is additionally provided with the drum shaft Carrier, its axial force F a for being used for being subject to the drum shaft is transferred to shaft position sensor, and the drums inside also sets Radial displacement transducer is equipped with, for detecting the radial load that drum shaft is subject to；Wherein left end support bearing only provides radial support Power, the installation site of radial displacement transducer abuts right-hand member spring bearing；

Further, emergent portion also includes stand-by power supply, control unit, safety valve to the conveyer safely, wherein described Control unit is connected with frequency converter, and the frequency converter connects the motor, described control unit respectively with roller band-type brake and standby Power supply is connected；When conveyer provides alarm signal in running monitoring system, cut-out electrical source of power is stopped power supply, conveyer In stopping, at this moment whole equipment is stopped, and in order to prevent electrical source of power by being powered suddenly because of other human factors, makes defeated Send machine to rerun and cause security incident, at this moment, control unit can cut off electrical source of power, cut off electrical source of power back roll band-type brake Driving roller can be locked prevents it from rotating, and now operating personnel and maintainer complete maintenance or it is determined that after safety, starting peace Full valve, stand-by power supply is powered to roller band-type brake and motor, and roller band-type brake is opened, and now, motor drives conveyer again.

Further, the axial displacement monitoring portion includes shaft position sensor, and the radial displacement monitoring portion includes Radial displacement transducer, the shaft position sensor and the radial displacement transducer are current vortex sensor.

Further, the converyor roller bearing on-line monitoring portion includes shaft coupling, and the shaft coupling passes through reductor Drum shaft is driven to rotate.

Further, the converyor roller bearing on-line monitoring portion includes left end support bearing and right-hand member spring bearing, The left end support bearing and right-hand member spring bearing use individual layer ball bearing.

Further, the converyor roller bearing on-line monitoring portion includes left end support bearing and right-hand member spring bearing, The left end support bearing and right-hand member spring bearing use double layers of rolling balls bearing.

Further, the converyor roller bearing on-line monitoring portion includes left end support bearing and right-hand member spring bearing, The left end support bearing and right-hand member spring bearing one use individual layer ball bearing, and one uses double layers of rolling balls bearing, two The internal diameter and outside dimension of bearing are identical.

The present invention also provides a kind of method being controlled using the described safe emergency flight control system of conveyer, wherein institute Stating axial displacement monitoring portion includes shaft position sensor, and the radial displacement monitoring portion includes radial displacement transducer, described The axial displacement signal that shaft position sensor will be measured is sent to control device, is preset when the axial displacement for measuring is more than Early warning numerical value when, control unit sends alarm signal, and conveyer starts stop pattern, and staff is overhauled；When radially When the radial displacement signal that displacement transducer is measured is more than early warning numerical value set in advance, control unit sends alarm signal, defeated Machine is sent to start stop pattern, staff's maintenance.

Further, when the conveyer is in any stop pattern, control unit is cut off electrical source of power and is stopped power supply, The roller band-type brake locking driving roller prevents it from rotating, and maintenance is completed or it is determined that safety as operating personnel or maintainer Afterwards, safety valve is started, stand-by power supply is powered to the roller band-type brake and the motor, roller band-type brake is opened, and the motor is again Drive conveyer.

Further, the shaft position sensor and the radial displacement transducer are current vortex sensor, its model CWY_DO_810504 is can select, the range of linearity of its detection：0.4mm-1.4mm, precision is up to 0.1um.In this interval, Sensor can see linear, and now displacement is proportional with output voltage, and its ratio is sensor ratio coefficient.

The beneficial effects of the invention are as follows：

By the detection to drum shaft and the state of spring bearing, reducing measurement difficulty can obtain defeated with convenient and safe Send the running status of machine, by the operation of safety valve and control unit, further enhance safety in production, thus ensure machine and The security of operating personnel.

Brief description of the drawings

Fig. 1 is the converyor roller bearing on-line monitoring system entirety in the safe emergency flight control system of conveyer of the invention Structural representation.

Fig. 2 is the safe emergency flight control systematic schematic diagram of conveyer of the invention.

In figure, the 1. axial displacement carrier of 2. shaft coupling of motor, 3. left end support bearing, 4. shaft position sensor 5. 6. the drum shaft of 7. right-hand member spring bearing of radial displacement transducer 8.

Specific embodiment

Brief description is made to specific embodiment of the invention below in conjunction with the accompanying drawings.

A kind of safe emergency flight control system of conveyer, including converyor roller bearing on-line monitoring system, the conveyer Roller bearings on-line monitoring system includes motor 1, shaft coupling 2, left end support bearing 3, shaft position sensor 4, axial displacement Carrier 5, radial displacement transducer 6, right-hand member spring bearing 7, drive chain, drum shaft 8, motor 1 drive rolling by shaft coupling 2 Cylinder axle 8 is rotated, and drum shaft 8 is supported between left end support bearing 3 and right-hand member spring bearing 7, and roller is arranged on drum shaft 8, And be engaged with left end support bearing 3 and right-hand member spring bearing 7, it is characterised in that：Axial position is additionally provided with the drum shaft 8 Carrier 5 is moved, its axial force F a for being used for being subject to the drum shaft 8 is transferred to shaft position sensor 4, the drums inside Radial displacement transducer 6 is additionally provided with, for detecting the radial load that drum shaft 8 is subject to；The wherein installation of radial displacement transducer 6 Position abuts right-hand member spring bearing 7.

Further, the shaft position sensor 4 and the radial displacement transducer 6 are current vortex sensor, its type Number optional CWY_DO_810504, the range of linearity of its detection：0.4mm-1.4mm, precision is up to 0.1um.It is interval at this Interior, sensor can see linear, and now displacement is proportional with output voltage, and its ratio is sensor ratio coefficient.

In real work, roller is due to conveying article to be carried, thus force status are complex, but according to theoretical power Learn and the mechanics of materials knowledge, can by the complicated applied force regime decomposition be axial force and radial load, below just it is done briefly Introduce.

Because left end support bearing only provides radial support power, do not provide along the axial force of loading direction, therefore act on The axial force that axial load on right-hand member spring bearing is subject to regard to drum shaft, can select current vortex sensor and makees in process of production Used for displacement transducer, against bearing to be measured, (bearing to be measured is the right side to the installation site of radial displacement transducer in the present invention Side spring bearing, also may be selected Left-side support bearing according to actual condition certainly, and in this case, Right side support bearing is only provided Radial support power), the radial displacement of drum shaft of bearing end to be measured is close to by detection come the approximate radial direction as bearing to be measured Deflection, and radial displacement transducer eliminates influence of the rigging error to measurement result, axial position from differential installation method Displacement sensor is by the axial deformation that detects the displacement of axial displacement carrier axial end to determine bearing to be measured.Radial direction and axle It is 35mv/um to the sensitivity of sensor, the range of linearity is 0.4-1.0mm, and the linearity is 1.2%.In order to eliminate axial displacement The influence to measurement result such as out-of-balance force when carrier circularity and rotation, by the data collecting card of NI companies of the U.S. and works out Corresponding acquisition software gathers the output signal of displacement transducer, is then filtered treatment by the data signal for collecting And calculate the average of output signal and determine the bearing deformation after loading, the process on digital signal acquiring herein and treatment, This is the ordinary technical knowledge of this area, and those skilled in the art are completely it is understood that such as the publication of publishing house of Tsing-Hua University, Hu Guang Book chief editor's《Digital Signal Processing guide wheel》In have clearly elaboration, do not do and excessively repeat in the present invention.

It is pointed out that in accompanying drawing of the invention 1, Left-side support bearing is individual layer ball bearing, Right side support axle It is double layers of rolling balls bearing to hold, thus the ratio for showing in the accompanying drawings is not consistent, but those skilled in the art are it is understood that this generation Table two kinds of specific embodiments of the invention, i.e., as left and right spring bearing be to be capable of achieving drum shaft using same dimensioned bearings The installation of upper roller.And for double-deck bearing, this bearing is made up of inside and outside two-layer bearing, possess inside and outside two-layer ball, prop up The lasso for supportting two-layer ball is respectively defined as inner ring, centre circle and outer ring, the wherein inner ring of the outer shroud of internal layer bearing and outer layer bearing Connected together by adapter ring, be collectively forming centre circle.Outer ring is arranged in bearing block when using, inner ring and rotor engagement, this It is the double layers of rolling balls bearing that this area understands to plant bearing.

In actual mechanical process, axial displacement signal and radial displacement signal are all using in electronic circuit and mechanics Ordinary technical knowledge is converted into corresponding axial force and radial load, is compared so as to can also obtain with the predetermined mechanics numerical value for setting To corresponding control model.

In the present invention, because bearing is arranged in bearing block, displacement generally can be directly utilized in the art Sensor detects the radial displacement near bearing, but the more difficult measurement of axial displacement, and the present invention is by the axial position of bearing to be measured Transfer is changed in the measurement to the axial displacement of axial displacement carrier, so as to enormously simplify the difficulty of measurement, and is obtained Preferable detection uniformity.

The safe emergency flight control system of conveyer also includes roller band-type brake, stand-by power supply, control unit, safety valve, its Described in control unit be connected with frequency converter, the frequency converter connects the motor, described control unit respectively with roller band-type brake With stand-by power supply connection, the axial displacement signal that shaft position sensor will be measured is sent to control unit, when the axial direction for measuring When displacement is more than early warning numerical value set in advance, control unit sends alarm signal, and conveyer starts stop pattern, staff Overhauled；When the radial displacement signal that radial displacement transducer is measured is more than early warning numerical value set in advance, control unit Alarm signal is sent, conveyer starts stop pattern, and staff's maintenance when conveyer is in any stop pattern, is cut off Electrical source of power is stopped power supply, and at this moment whole equipment is stopped, in order to prevent electrical source of power from being supplied suddenly because of other human factors Electricity, reruns conveyer and causes security incident, and at this moment, control unit can cut off electrical source of power, after cut-out electrical source of power Roller band-type brake can lock driving roller prevents it from rotating, and now operating personnel and maintainer complete maintenance or it is determined that safety Afterwards, safety valve is started, stand-by power supply is powered to roller band-type brake and motor, roller band-type brake is opened, and now, motor drives conveying again Machine.

It is pointed out that safety valve is any disclosure satisfy that device (such as Resetting Switching of above-mentioned startup requirement Deng), and this is known in those skilled in the art, therefore do not repeat herein.

One embodiment of the present of invention has been described in detail above, but the content is only preferable implementation of the invention Example, it is impossible to be considered as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement Deng all should still belong within patent covering scope of the invention.

Claims

1. a kind of safe emergency flight control system of conveyer, including converyor roller bearing on-line monitoring portion and conveyer are emergent safely Portion, the converyor roller bearing on-line monitoring portion includes axial displacement monitoring portion and radial displacement monitoring portion, the conveyer The emergent portion of safety includes roller band-type brake；Characterized in that, the converyor roller bearing on-line monitoring portion includes motor, shaft coupling Device, left end support bearing, shaft position sensor, axial displacement carrier, radial displacement transducer, right-hand member spring bearing, drive Dynamic chain, drum shaft, motor drive drum shaft to rotate by shaft coupling, and drum shaft is supported on left end support bearing and right-hand member support Between bearing, roller is arranged on drum shaft, and is engaged with left end support bearing and right-hand member spring bearing, on the drum shaft Axial displacement carrier is additionally provided with, its axial force F a for being used for being subject to the drum shaft is transferred to shaft position sensor, The drums inside is additionally provided with radial displacement transducer, for detecting the radial load that drum shaft is subject to；Wherein left end support axle Hold and radial support power is only provided, the installation site of radial displacement transducer abuts right-hand member spring bearing；The axial displacement monitoring Portion includes shaft position sensor, and the radial displacement monitoring portion includes radial displacement transducer, the shaft position sensor It is current vortex sensor with the radial displacement transducer.

2. the safe emergency flight control system of conveyer as claimed in claim 1, it is characterised in that the converyor roller bearing exists Line monitoring portion includes shaft coupling, and the shaft coupling drives drum shaft to rotate by reductor.

3. the safe emergency flight control system of conveyer as claimed in claim 1, it is characterised in that the converyor roller bearing exists Line monitoring portion includes left end support bearing and right-hand member spring bearing, and the left end support bearing and right-hand member spring bearing use individual layer Ball bearing.

4. the safe emergency flight control system of conveyer as claimed in claim 1, it is characterised in that the converyor roller bearing exists Line monitoring portion includes left end support bearing and right-hand member spring bearing, and the left end support bearing and right-hand member spring bearing are using double-deck Ball bearing.

5. the safe emergency flight control system of conveyer as claimed in claim 1, it is characterised in that the converyor roller bearing exists Line monitoring portion includes left end support bearing and right-hand member spring bearing, one use of the left end support bearing and right-hand member spring bearing Individual layer ball bearing, one uses double layers of rolling balls bearing, and the internal diameter and outside dimension of two bearings are identical.