CN106628943A

CN106628943A - Conveyor safety emergency control system control method

Info

Publication number: CN106628943A
Application number: CN201710064051.4A
Authority: CN
Inventors: 吴联凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-21
Filing date: 2015-04-21
Publication date: 2017-05-10
Anticipated expiration: 2035-04-21
Also published as: CN104828516A; CN106697846A; CN106628943B; CN104828516B; CN106697846B

Abstract

The invention relates to a conveyor safety emergency control system control method. An axial displacement sensor sends measured axial displacement signals to a control device, when the measured axial displacement is larger than the preset alarming value, a control unit sends out an alarming signal, an conveyor starts a halt mode, and working staff perform overhauling; when radial displacement signals measured by a radial displacement sensor are larger than the preset alarming value, the control unit sends out an alarming signal, the conveyor starts the halt mode, and working staff perform overhauling; when the conveyor is in any halt mode, the control unit cuts off a power source to stop power supply, and a rotary drum band-type brake locks a drive roller to prevent rotation of the drive roller; and after operation personnel or overhauling personnel complete overhauling or guarantee safety, a safety valve is started, a stand-by power source supplies power to the rotary drum band-type brake and a motor, the rotary drum band-type brake is turned on, and the motor drives the conveyor again. The method focuses on one-line monitoring of bearings playing a role of drive, and an influenced safety emergency control system is started, so that safety of the whole device is guaranteed.

Description

A kind of control method of the safe emergency flight control system of conveyer

Technical field

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

Background technology

In the prior art, belt conveyor and roller conveyor generally all carry out power transmission using cylinder, and cylinder 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 send 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 cylinder class conveyer, cylinder 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 Using in, because whole chain does not prevent chain from jumping the device of tooth during sprocket wheel operating, 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 changes, 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 be have impact on production operation and enter Degree, causes unnecessary economic loss, therefore shows the supervising device of the anti-chain abjection in 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 mounted in into special Bearing testing dress 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, then bearing to be measured is tested by the special bearing monitoring device, 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 carrying out Bearing testing, and generally need to be dismantled on bearing to be measured, even if or not entering Row bearing removal, it is also desirable to which on the testing equipment for placing whole wheel to axle, thus detection method is more complicated.

Research shows, conveying device has achieved in terms of safety detection at present length as one kind of mechanical device The progress of foot, but fail to cause enough attention on the 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 belt conveyor large quantities of in mine etc. more In the continuous conveying of amount 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 running After the controlling alarm of monitoring system, in order to ensure situations such as operator safety occurs jerk, 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.

It is contemplated that the system that a kind of conveying device roller bearings carry out dynamic on-line monitoring/monitoring is proposed, particularly That the present invention has been directed to emphatically the bearing of driving effect and has been monitored on-line, and start the safe emergency flight control system of impact 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.

For achieving the above object, the technical solution used in the present invention is：Including converyor roller bearing on-line monitoring portion and The safe emergent portion of conveyer, it is characterised in that the converyor roller bearing on-line monitoring portion include axial displacement monitoring portion and Radial displacement monitoring portion, safely emergent portion includes cylinder band-type brake to the conveyer.

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, cylinder is installed On drum shaft, and it is engaged with left end support bearing and right-hand member spring bearing, on the drum shaft axial displacement is additionally provided with Carrier, it is used for for axial force F a that the drum shaft is subject to being 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 provides only radial support Power, the installation site of radial displacement transducer abuts right-hand member spring bearing；

Further, safely emergent portion also includes stand-by power supply, control unit, safety valve to the conveyer, wherein described Control unit is connected with frequency converter, and the frequency converter connects the motor, described control unit respectively with cylinder band-type brake and standby Power supply connects；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 quits work, and in order to prevent electrical source of power by powering 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 cylinder 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 cylinder band-type brake and motor, and cylinder 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 adopt 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 adopt 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 adopt individual layer ball bearing, and one adopts double layers of rolling balls bearing, two The internal diameter and outside dimension of bearing is identical.

The present invention also provides a kind of method being controlled using the described safe emergency flight control system of conveyer, wherein institute Axial displacement monitoring portion is stated including shaft position sensor, the radial displacement monitoring portion includes radial displacement transducer, described The axial displacement signal for measuring is sent to control device by shaft position sensor, 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 arbitrary stop pattern, control unit is cut off electrical source of power and is stopped power supply, The cylinder band-type brake locking drives cylinder to prevent it from rotating, when operating personnel or maintainer complete maintenance or it is determined that safety Afterwards, safety valve is started, stand-by power supply to the cylinder band-type brake and the motor are powered, and cylinder 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 Optional CWY_DO_810504, 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 invention has the beneficial effects 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, so as to ensure machine and The security of operating personnel.

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 present invention Structural representation.

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

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

Specific embodiment

Below in conjunction with the accompanying drawings brief description is made to the specific embodiment of the present invention.

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 drives 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 cylinder 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, it is used for for axial force F a that the drum shaft 8 is subject to being 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, cylinder is due to carrying conveying article, thus force status are complex, but according to theoretical power Learn and the mechanics of materials knowledge, can be axial force and radial load by the complicated applied force regime decomposition, below just it is done briefly Introduce.

Because left end support bearing provides only radial support power, the axial force along loading direction is not provided, therefore acted on The axial force that axial load on right-hand member spring bearing is subject to regard to drum shaft, can select in process of production current vortex sensor and makees Use 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 provided only Radial support power), by the radial displacement of the drum shaft of the close bearing end to be measured of detection come the approximate radial direction as bearing to be measured Deflection, and radial displacement transducer eliminates impact of the rigging error to measurement result, axial position from differential installation method Displacement sensor determines the axial deformation of bearing to be measured by the displacement of detection axial displacement carrier axial end.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 impact 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 process by the data signal to collecting And the bearing deformation after calculating the average of output signal to determine loading, with regard to digital signal acquiring herein and the process of process, 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 in the present invention and excessively repeat.

It is pointed out that the present invention accompanying drawing 1 in, Left-side support bearing be individual layer ball bearing, Right side support axle Hold as double layers of rolling balls bearing, 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 Two kinds of specific embodiments of the table present invention, i.e., be capable of achieving drum shaft using same dimensioned bearings as left and right spring bearing The installation of upper cylinder.And for double-deck bearing, this bearing is made up of inside and outside two-layer bearing, possess inside and outside two-layer ball, The lasso of support 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 Plant the double layers of rolling balls bearing that bearing is that this area understands.

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 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 Detecting the radial displacement near bearing, but the more difficult measurement of axial displacement, the present invention is by the axial position of bearing to be measured for sensor 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 the conveyer also includes cylinder 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 cylinder band-type brake With stand-by power supply connection, the axial displacement signal for measuring is sent to control unit by shaft position sensor, 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 arbitrary stop pattern, is cut off Electrical source of power is stopped power supply, and at this moment whole equipment quits work, in order to prevent electrical source of power from supplying 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 Cylinder band-type brake can lock driving cylinder 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 cylinder band-type brake and motor, and cylinder band-type brake is opened, and now, motor drives conveying again Machine.

It is pointed out that safety valve is any disclosure satisfy that the device of above-mentioned startup requirement (such as Resetting Switching 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 the preferable enforcement of the present invention Example, it is impossible to be considered as the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement Deng, all should still belong to the present invention patent covering scope within.

Claims

1. a kind of control method of the safe emergency flight control system of conveyer, the safe emergency flight control system of the conveyer includes conveyer Roller bearings on-line monitoring portion and the emergent portion of conveyer safety, the converyor roller bearing on-line monitoring portion includes axial displacement Monitoring portion and radial displacement monitoring portion, safely emergent portion includes cylinder band-type brake to the conveyer；Characterized in that, the conveyer Roller bearings on-line monitoring portion include motor, shaft coupling, left end support bearing, shaft position sensor, axial displacement carrier, Radial displacement transducer, right-hand member spring bearing, drive chain, drum shaft, motor drives drum shaft to rotate by shaft coupling, cylinder Axle is supported between left end support bearing and right-hand member spring bearing, cylinder be arranged on drum shaft on, and with left end support bearing and Right-hand member spring bearing is engaged, and axial displacement carrier is additionally provided with the drum shaft, and it is used for being subject to the drum shaft Axial force F a be transferred to shaft position sensor, the drums inside is additionally provided with radial displacement transducer, for detect rolling The radial load that cylinder axle is subject to；Wherein described axial displacement monitoring portion includes shaft position sensor, the radial displacement monitoring portion Including radial displacement transducer, the control method includes, the shaft position sensor sends the axial displacement signal for measuring To control device, when the axial displacement for measuring is more than early warning numerical value set in advance, control unit sends alarm signal, conveying Machine starts stop pattern, and staff is overhauled；Set in advance when the radial displacement signal that radial displacement transducer is measured is more than During fixed early warning numerical value, control unit sends alarm signal, and conveyer starts stop pattern, staff's maintenance；When described defeated When sending machine to be in arbitrary stop pattern, control unit is cut off electrical source of power and is stopped power supply, and the cylinder band-type brake locking drives rolling Cylinder prevents it from rotating, when operating personnel or maintainer complete maintenance or it is determined that after safety, starting safety valve, stand-by power supply to The cylinder band-type brake and the motor are powered, and cylinder band-type brake is opened, and the motor drives conveyer again.

2. the control method of the safe emergency flight control system of conveyer as claimed in claim 1, it is characterised in that the axial position Displacement sensor and the radial displacement transducer are current vortex sensor, and its model selects CWY_DO_810504, the line of its detection Property scope：0.4mm-1.4mm, precision is up to 0.1um.