CN110654806A - Comprehensive control method for multiple braking devices for preventing belt runaway - Google Patents
Comprehensive control method for multiple braking devices for preventing belt runaway Download PDFInfo
- Publication number
- CN110654806A CN110654806A CN201910896867.2A CN201910896867A CN110654806A CN 110654806 A CN110654806 A CN 110654806A CN 201910896867 A CN201910896867 A CN 201910896867A CN 110654806 A CN110654806 A CN 110654806A
- Authority
- CN
- China
- Prior art keywords
- belt
- upper limit
- speed
- load torque
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
Landscapes
- Control Of Velocity Or Acceleration (AREA)
Abstract
The invention discloses a comprehensive control method of multiple braking devices for preventing belt runaway, which comprises the steps of obtaining a speed signal of a belt speed measuring device and/or a load torque signal of a belt frequency converter; comparing the speed signal and/or load torque signal values with preset values; when the value of the speed signal and/or the load torque signal is lower than a normal preset value and higher than a lower limit value, the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the front-end feeder; when the numerical value of the speed signal and/or the load torque signal is higher than a normal preset value and lower than an upper limit value, starting hydraulic brake intervention deceleration and controlling the upper limit of the output frequency of the front-end feeder; when the numerical value of the speed signal and/or the load torque signal exceeds the upper limit value and the lower limit value, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration, the frequency converter decelerates and stops, and finally, the mechanical brake is locked to complete stopping. The invention has the characteristics of reliable performance, simple control, good braking effect and high automation degree.
Description
Technical Field
The invention belongs to the technical field of mineral processing equipment, and particularly relates to a comprehensive control method for a multi-brake device for preventing belt runaway, which is reliable, simple to control, good in brake effect and high in automation degree.
Background
The belt conveyor has the advantages of long conveying distance, large conveying capacity, high conveying speed, low power consumption, reliable operation, easy realization of automatic control and the like, is widely used in various mine production and is called as modern powerful conveying equipment. However, the use of the belt conveyor under the working condition of large inclination angle and long distance is limited by the 'flying vehicle', and more users are troubled.
In general, the main reasons for the "runaway" of the belt conveyor are that the downward conveying angle is over-limit and the conveying amount is overloaded. When the belt conveyor is overloaded and the downward conveying angle is too large, the belt and the materials on the belt can automatically slide downwards under the action of gravity and inertia, and the speed can be gradually increased, so that the 'runaway' can be caused. When the mine is in a flying state in the production process of mines, if the mine is not braked immediately, ores conveyed on the belt conveyor can be discharged at a very high speed, and after a funnel at the tail part of the belt conveyor is damaged, the ores fall onto a road or a platform at the lower part of the ore bin along the top of the ore bin, so that great potential safety hazards are brought to people and vehicles walking on the road or the platform.
In order to prevent the 'runaway', the traditional machine head unloading point drive is changed, for example, a machine head driving part is arranged at a position 30m away from the machine tail, so that the friction resistance of the downward conveying of the belt conveyor is increased, the possibility of the 'runaway' is reduced, and the 'runaway' accident is even avoided. However, when the belt conveyor is transported downwards, the top belt of the belt conveyor is tensioned and the bottom belt of the belt conveyor is loosened under the gravity action of materials, so that the friction force of the driving main roller is reduced suddenly, the downward sliding speed of the belt is increased, and the belt conveyor is in a runaway accident. In order to solve the problem, the traditional mode of directly tensioning a tensioning winch and a steel wire rope for a belt conveyor is generally changed, and an automatic hydraulic tensioning device is adopted for tensioning the belt conveyor. However, after the motor of the downward belt conveyor is started, the running direction is consistent with the direction of the belt (gravity component force), so that an accelerating torque with the same belt running direction is formed, and the belt runs downwards in an accelerating way; the running belt is influenced by gravity to form a downward acceleration, so that the belt runs faster and faster, and the speed regulation precision and fine braking requirements of actual production are difficult to meet by adopting single power frequency transmission, mechanical braking and hydraulic braking in the prior art. The stability of belt transportation in-process has been improved, generally adopt multiple modes such as mechanical braking, hydraulic braking and converter dynamic braking to prevent "driving over" and improve the precision of speed governing, but can cause each braking system to be difficult to coordinate, make the braking reliability of whole band conveyer hardly guarantee. In addition, because of the different characteristics of each braking system, if improper braking intervenes during emergency shutdown, not only can the frequency converter and each braking system be damaged, but also the belt is difficult to stop in the shortest time, and a huge potential safety hazard exists.
Disclosure of Invention
The invention aims to provide a comprehensive control method for a multi-brake device, which can prevent belt runaway and has the advantages of reliability, simple control, good braking effect and high automation degree.
The invention comprises the steps of data acquisition, data comparison, acceleration control, speed regulation control and parking I, and specifically comprises the following steps:
A. data acquisition: acquiring a speed signal of a speed measuring device on a belt and/or a load torque signal of a frequency converter of a belt driving device;
B. and (3) data comparison: comparing the value of the speed signal and/or the load torque signal with a preset value;
C. acceleration control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is lower than the normal preset value range and higher than the lower limit value, the frequency converter performs energy consumption braking and controls the vibrating feeder of the front-end ore feeder to output an upper limit frequency X;
D. speed regulation control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range and lower than the upper limit value X, starting hydraulic brake to intervene in deceleration and controlling the upper limit Y of the output frequency of the vibrating feeder of the front-end ore feeder;
E. parking I: when the numerical value of the speed signal and/or the load torque signal exceeds the upper limit value X or the lower limit value in the data comparison, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration and the frequency converter is started to decelerate and stop in sequence, and finally, the mechanical band-type brake is locked to finish stopping.
The invention has the beneficial effects that:
1. according to the invention, according to the problem that the measurement speed is slightly deviated from the actual speed of the belt due to the fact that a speed measuring device is generally arranged at the roller of the belt and the roller slide slightly, the speed of the belt is directly measured through the speed measuring device, meanwhile, a load torque signal of a frequency converter of a belt driving device is used as a control parameter, and the upper limit of the output frequency of a vibrating feeder of a front-end ore feeder is comprehensively adjusted through the belt speed signal and the load torque signal, so that the ore feeding amount is controlled, the flying accident probability is reduced from the source, and the accurate speed regulation and the fine braking of the belt conveyor are realized.
2. The invention controls the running frequency of the frequency converter by the running speed of the belt, thereby realizing the closed-loop control of the running speed of the belt and effectively improving the accurate speed regulation capability of the belt conveyor.
3. The invention reduces the gravity component by reducing minerals on the belt and reduces the torque of the belt brake through first stopping the mine and then delaying the disc brake deceleration during emergency stop, so that the braking energy of the frequency converter can reliably intervene when the speed is reduced to a certain value through the disc brake deceleration, and finally the mechanical band-type brake is locked to complete the stop, thereby effectively improving the braking effect of the whole system.
4. According to the invention, through comparison of the belt speed signal and the load torque signal, the brake systems are mutually matched to work under the premise of not mutually interfering aiming at different conditions, so that the accurate speed regulation of the belt conveyor is realized, and the occurrence of a runaway accident is effectively avoided.
Drawings
FIG. 1 is a schematic flow chart of example 1 of the present invention;
FIG. 2 is a schematic diagram of the apparatus of the present invention;
in the figure: the method comprises the following steps of 1-belt, 2-front-end belt, 3-vibrating feeder, 4-hydraulic brake device, 5-disc brake device, 6-mechanical brake, 7-frequency converter and 8-belt drive motor.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to limit the invention in any way, and any variations or modifications which are based on the teachings of the invention are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the method comprises the steps of data acquisition, data comparison, acceleration control, speed regulation control and parking, and specifically comprises the following steps:
A. data acquisition: acquiring a speed signal of a speed measuring device on a belt and/or a load torque signal of a frequency converter of a belt driving device;
B. and (3) data comparison: comparing the value of the speed signal and/or the load torque signal with a preset value;
C. acceleration control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is lower than the normal preset value range and higher than the lower limit value, the frequency converter performs energy consumption braking and controls the vibrating feeder of the front-end ore feeder to output an upper limit frequency X;
D. speed regulation control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range and lower than the upper limit value X, starting hydraulic brake to intervene in deceleration and controlling the upper limit Y of the output frequency of the vibrating feeder of the front-end ore feeder;
E. parking I: when the numerical value of the speed signal and/or the load torque signal exceeds the upper limit value X or the lower limit value in the data comparison, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration and the frequency converter is started to decelerate and stop in sequence, and finally, the mechanical band-type brake is locked to finish stopping.
And the step D comprises a primary speed regulation step, a secondary speed regulation step and a parking step II, and specifically comprises the following steps:
d1, primary speed regulation: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range for the first time and lower than the upper limit value X, starting hydraulic brake to intervene in deceleration and controlling the upper limit Y1 of the output frequency of the vibrating feeder of the front-end ore feeder;
d2, secondary speed regulation: when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value Y1 and is kept for 150-450 s, starting the hydraulic brake to reduce the speed and controlling the upper limit value Y2 of the output frequency of the vibrating feeder of the front-end ore feeder;
d3, parking II: and when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value Y2 and is kept for 450-750 s, controlling the front-end belt and the vibrating feeder to stop, simultaneously sequentially starting disc brake to intervene deceleration and the frequency converter to decelerate and stop, and finally locking the mechanical brake to finish stopping.
In the step D2, when the numerical value of the data comparison intermediate speed signal and/or the load torque signal is continuously higher than the normal preset value range and lower than the upper limit value Y1 and keeps not more than 150-450 s, the frequency converter performs energy-consumption braking and controls the upper limit value Y3 of the output frequency of the vibrating feeder of the front-end ore feeder.
In the step D3, when the numerical value of the data comparison intermediate speed signal and/or the load torque signal is continuously higher than the normal preset value range and lower than the upper limit value Y2 and keeps no more than 450-750 s, the frequency converter performs energy consumption braking and controls the upper limit value Y4 of the output frequency of the vibrating feeder of the front-end ore feeder.
The Y2 < Y1 < X or Y4 < Y3 < X.
The upper limit value of the speed signal in the D3 substep is 1.1 times of the normal speed of the belt.
And the upper limit X of the output frequency of the vibrating feeder of the feeder is 42-50 Hz.
The upper limit of Y1 in the D1 substep is 48Hz, and the upper limit of Y2 in the D2 substep is 44 Hz.
The upper limit of Y3 in the D2 substep is 46Hz, and the upper limit of Y4 in the D3 substep is 42 Hz.
And in the step D and/or the step E, when the value of the speed signal and/or the load torque signal exceeds a preset threshold value, generating an alarm signal.
The speed measuring device adopts a projection type photoelectric rotating speed sensor or a reflection type photoelectric rotating speed sensor and a piezoelectric acceleration sensor, and a light-passing disc of the projection type photoelectric rotating speed sensor or the reflection type photoelectric rotating speed sensor is in friction connection with a belt through a friction wheel.
The hydraulic brake comprises a hydraulic brake wheel, a disc brake disc, a friction plate and a mechanical band-type brake, wherein the hydraulic brake wheel is in friction connection with a belt or a driving shaft, the disc brake disc is in coaxial connection with the driving shaft of the belt, and the friction plate of the mechanical band-type brake is in friction connection with the belt or the driving shaft.
Example 1:
the belt length of a melting 2# belt of a certain iron ore three-separation plant is 265m, the belt motor is Y2-315S-4, the power is 110KW rated current: 200A, rated voltage: 380V, design gradient 9.391 degrees, design processing capacity 1066 t/h, design belt speed 1.6m/s, direct start mode, the running direction of the motor after start is consistent with the direction of the belt (gravity component), and an accelerating torque with the same running direction of the belt is formed, so that the belt runs downwards in an accelerating way. The running belt is influenced by gravity to form a downward acceleration, so that the belt runs faster and faster, and the speed regulation precision and fine braking requirements of actual production are difficult to meet by single power frequency transmission and mechanical braking. Since the installation and production, 21 runaway accidents occur in almost six years, the last runaway accident directly causes the gear teeth of a primary transmission shaft gear of an SEW reduction box matched with a system to be broken, bearings at two ends of the SEW reduction box are seriously damaged, other two-stage transmission gears and bearings are also damaged in different degrees, great potential safety hazards are brought to equipment operation, when the runaway occurs, if the braking is not carried out immediately, iron ore conveyed on an adhesive tape machine is poured at a very high speed, and after a funnel at the tail part of the adhesive tape machine is damaged, the iron ore falls onto a road at the lower part of an ore bin along the top of the ore bin, and great potential safety hazards are brought to people and cars walking on the road. Later, a fused 2# belt frequency converter dynamic braking transformation project is implemented, the stability in the transportation process is improved, and then an KZP type disc brake transformation is additionally arranged, so that the problem of insufficient braking force is solved. However, the system comprises the original mechanical and hydraulic braking, a plurality of sets of braking systems participate in the speed and braking control of the belt, a unified control system is not provided to integrate all the braking systems, and the reliability of the belt braking is difficult to guarantee. Therefore, according to the problem that the prior speed measuring device is installed at a belt roller, and the slight sliding exists between the belt and the roller, so that the measured speed slightly deviates from the actual speed of the belt, the light-passing disc of the projection type photoelectric rotating speed sensor of the speed measuring device is in friction connection with the melting No. 2 belt through a friction wheel to drive and rotate, and then the control is carried out according to the following steps.
S100: and acquiring a speed signal of a speed measuring device on the melting 2# belt and a load torque signal of a frequency converter of the belt driving device.
S200: the values of the speed signal and the load torque signal are compared to preset values in the controller.
S300: when the numerical value of the speed signal and/or the load torque signal in the data comparison is lower than the normal preset value range and higher than the lower limit value, the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder to be 50Hz, so that the ore feeding amount is controlled to reduce the belt driving torque, and the rotating speed of the belt is increased.
S410: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range for the first time and lower than the upper limit value, an alarm signal is generated to drive the alarm to give an alarm, the hydraulic brake is started to intervene for deceleration, and the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder is controlled to be 48 Hz.
S420: when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept for 300s, an alarm signal is generated to drive an alarm to give an alarm, hydraulic brake intervention deceleration is started, and the upper limit of the output frequency of a vibrating feeder of the front-end ore feeder is controlled to be 42 Hz;
and when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept not more than 150s, an alarm signal is generated to drive the alarm to give an alarm, and the frequency converter performs energy-consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder to be 46 Hz.
S430: when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept for 600s, an alarm signal is generated to drive an alarm to give an alarm, a belt and a vibrating feeder at the front end are controlled to stop, meanwhile, disc brake intervention deceleration and frequency converter deceleration stop are sequentially started, and finally, mechanical band-type brakes are locked to finish stopping;
and when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept not more than 450s, an alarm signal is generated to drive the alarm to give an alarm, and the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder to be 44 Hz.
S500: when the numerical value of the speed signal and/or the load torque signal exceeds the upper limit value or the lower limit value in the data comparison, an alarm signal is generated to drive an alarm to give an alarm, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration and the frequency converter is started to decelerate and stop in sequence, and finally, the mechanical band-type brake is locked to finish stopping.
Example 2:
the belt apparatus was controlled as in example 1, according to the following procedure.
S100: and acquiring a load torque signal of a speed measuring device on the melting 2# belt.
S200: the speed signal value is compared to a preset value in the controller.
S300: when the numerical value of the speed signal in the data comparison is lower than the normal preset value range and higher than the lower limit value, the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder, the load of the descending belt is properly increased, and the load of the ascending belt is properly reduced.
S410: when the numerical value of the speed signal in the data comparison is higher than the normal preset value range for the first time and lower than the upper limit value, an alarm signal is generated to drive an alarm to give an alarm, hydraulic brake is started to intervene for deceleration, and the upper limit of the output frequency of a vibrating feeder of the front-end ore feeder is controlled to be 48 Hz.
S420: when the numerical value of the speed signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept for 450s, an alarm signal is generated to drive an alarm to give an alarm, hydraulic brake intervention deceleration is started, and the upper limit of the output frequency of a vibrating feeder of the front-end ore feeder is controlled to be 44 Hz;
and when the numerical value of the speed signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept not to exceed 250s, an alarm signal is generated to drive the alarm to give an alarm, and the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder to be 46 Hz.
S430: when the numerical value of the speed signal in the data comparison is continuously higher than the range of the normal preset value, is lower than the upper limit value and is kept for 750s or higher than the upper limit value, an alarm signal is generated to drive an alarm to give an alarm, a belt and a vibrating feeder at the front end are controlled to stop, meanwhile, disc brake intervention deceleration and frequency converter deceleration parking are sequentially started, and finally, a mechanical band-type brake is locked to finish parking;
and when the numerical value of the speed signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value and is kept not to exceed 550s, an alarm signal is generated to drive the alarm to give an alarm, and the frequency converter performs energy consumption braking and controls the upper limit of the output frequency of the vibrating feeder of the front-end ore feeder to be 42 Hz.
S500: when the numerical value of the speed signal exceeds the upper limit value or the lower limit value in the data comparison, an alarm signal is generated to drive an alarm to give an alarm, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration and the frequency converter is started to decelerate and stop, and finally, the mechanical band-type brake is locked to finish stopping.
Claims (10)
1. The utility model provides a many arresting gear integrated control method of prevention belt driving which characterized in that includes data acquisition, data comparison, acceleration control, speed governing control, I step of stopping, specifically includes:
A. data acquisition: acquiring a speed signal of a speed measuring device on a belt and/or a load torque signal of a frequency converter of a belt driving device;
B. and (3) data comparison: comparing the value of the speed signal and/or the load torque signal with a preset value;
C. acceleration control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is lower than the normal preset value range and higher than the lower limit value, the frequency converter performs energy consumption braking and controls the vibrating feeder of the front-end ore feeder to output an upper limit frequency X;
D. speed regulation control: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range and lower than the upper limit value X, starting hydraulic brake to intervene in deceleration and controlling the upper limit Y of the output frequency of the vibrating feeder of the front-end ore feeder;
E. parking I: when the numerical value of the speed signal and/or the load torque signal exceeds the upper limit value X or the lower limit value in the data comparison, the belt and the vibrating feeder at the front end are controlled to stop, meanwhile, the disc brake is started to intervene in deceleration and the frequency converter is started to decelerate and stop in sequence, and finally, the mechanical band-type brake is locked to finish stopping.
2. The comprehensive control method for the multiple braking devices for preventing the belt runaway as claimed in claim 1, wherein the step D comprises the steps of primary speed regulation, secondary speed regulation and stopping II, and specifically comprises the following steps:
d1, primary speed regulation: when the numerical value of the speed signal and/or the load torque signal in the data comparison is higher than the normal preset value range for the first time and lower than the upper limit value X, starting hydraulic brake to intervene in deceleration and controlling the upper limit Y1 of the output frequency of the vibrating feeder of the front-end ore feeder;
d2, secondary speed regulation: when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value Y1 and is kept for 150-450 s, starting the hydraulic brake to reduce the speed and controlling the upper limit value Y2 of the output frequency of the vibrating feeder of the front-end ore feeder;
d3, parking II: and when the numerical value of the speed signal and/or the load torque signal in the data comparison is continuously higher than the normal preset value range and lower than the upper limit value Y2 and is kept for 450-750 s, controlling the front-end belt and the vibrating feeder to stop, simultaneously sequentially starting disc brake to intervene deceleration and the frequency converter to decelerate and stop, and finally locking the mechanical brake to finish stopping.
3. The comprehensive control method for the multiple braking devices for preventing belt coasts as claimed in claim 2, wherein in the step D2, when the numerical value of the data comparison intermediate speed signal and/or the load torque signal is continuously higher than the normal preset value range and lower than the upper limit value Y1 and keeps not more than 150-450 s, the frequency converter performs energy consumption braking and controls the upper limit value Y2 of the output frequency of the vibrating feeder of the front-end mining machine.
4. The comprehensive control method for the multiple braking devices for preventing belt coasts as claimed in claim 3, wherein in the step D2, when the numerical value of the data comparison intermediate speed signal and/or the load torque signal is continuously higher than the normal preset value range and lower than the upper limit value Y1 and keeps not more than 150-450 s, the frequency converter performs energy consumption braking and controls the upper limit value Y3 of the output frequency of the vibrating feeder of the front-end mining machine.
5. The comprehensive control method for the multiple braking devices for preventing belt coasts as claimed in claim 4, wherein in the step D3, when the numerical value of the data comparison intermediate speed signal and/or the load torque signal is continuously higher than the normal preset value range and lower than the upper limit value Y2 and keeps not more than 450-750 s, the frequency converter performs energy consumption braking and controls the upper limit value Y4 of the output frequency of the vibrating feeder of the front-end mining machine.
6. The method of claim 5, wherein Y2 < Y1 < X or Y4 < Y3 < Y1 < X.
7. The integrated control method of multiple brake devices for preventing belt runaway as claimed in claim 2, wherein the upper limit value of the speed signal in the step D3 is 1.1 times the normal speed of the belt.
8. The comprehensive control method for the multiple braking devices for preventing the belt runaway as claimed in any one of claims 1 to 7, wherein the upper limit X of the output frequency of the vibrating feeder of the ore feeder is 42-50 Hz.
9. The integrated control method for multiple braking devices to prevent belt runaway as claimed in claim 8, wherein in step D and/or step E, an alarm signal is generated when the value of the speed signal and/or the load torque signal exceeds a preset threshold.
10. The integrated control method for multiple braking devices to prevent belt coaster according to claim 8, wherein the speed measuring device is a projection type photoelectric speed sensor or a reflection type photoelectric speed sensor, a piezoelectric acceleration sensor, and a light-passing disc of the projection type photoelectric speed sensor or the reflection type photoelectric speed sensor is frictionally connected with the belt through a friction wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896867.2A CN110654806B (en) | 2019-09-23 | 2019-09-23 | Comprehensive control method for multiple braking devices for preventing belt runaway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896867.2A CN110654806B (en) | 2019-09-23 | 2019-09-23 | Comprehensive control method for multiple braking devices for preventing belt runaway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110654806A true CN110654806A (en) | 2020-01-07 |
| CN110654806B CN110654806B (en) | 2021-05-18 |
Family
ID=69038814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910896867.2A Active CN110654806B (en) | 2019-09-23 | 2019-09-23 | Comprehensive control method for multiple braking devices for preventing belt runaway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110654806B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977310A (en) * | 2020-07-24 | 2020-11-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Comprehensive protection method for long-distance rubber belt conveyor |
| CN114476523A (en) * | 2021-12-24 | 2022-05-13 | 太原理工大学 | Braking device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5589123A (en) * | 1978-12-27 | 1980-07-05 | Toshiba Corp | Home position stop control system |
| DE3632962C1 (en) * | 1986-09-27 | 1988-02-11 | Alfred Tueschen | Control device for the brake and/or drive of a conveying system |
| CN103508178A (en) * | 2012-06-20 | 2014-01-15 | 上海梅山钢铁股份有限公司 | Method for preventing slipping of lower belt of blast furnace groove |
| CN203682508U (en) * | 2014-02-11 | 2014-07-02 | 三峡大学 | Overload processing system of hydropower engineering belt conveyer |
| CN105947596A (en) * | 2016-06-20 | 2016-09-21 | 西安科技大学 | Anti-runaway protection system and method for downward belt conveyor |
-
2019
- 2019-09-23 CN CN201910896867.2A patent/CN110654806B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5589123A (en) * | 1978-12-27 | 1980-07-05 | Toshiba Corp | Home position stop control system |
| DE3632962C1 (en) * | 1986-09-27 | 1988-02-11 | Alfred Tueschen | Control device for the brake and/or drive of a conveying system |
| CN103508178A (en) * | 2012-06-20 | 2014-01-15 | 上海梅山钢铁股份有限公司 | Method for preventing slipping of lower belt of blast furnace groove |
| CN203682508U (en) * | 2014-02-11 | 2014-07-02 | 三峡大学 | Overload processing system of hydropower engineering belt conveyer |
| CN105947596A (en) * | 2016-06-20 | 2016-09-21 | 西安科技大学 | Anti-runaway protection system and method for downward belt conveyor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977310A (en) * | 2020-07-24 | 2020-11-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Comprehensive protection method for long-distance rubber belt conveyor |
| CN114476523A (en) * | 2021-12-24 | 2022-05-13 | 太原理工大学 | Braking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110654806B (en) | 2021-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110654806B (en) | Comprehensive control method for multiple braking devices for preventing belt runaway | |
| CN102009890B (en) | Detector for absolute position of elevator lift car | |
| CN102448868B (en) | Control device for handrail drive device | |
| CN206782733U (en) | Rubber conveyer varying load energy-saving speed regulating automaton | |
| CN103303692A (en) | Efficient automatic stocker with two-arm brackets for blending evenly | |
| CN102933480A (en) | Method for monitoring the movement of an elevator car, and an elevator system | |
| CN102556784B (en) | Elevator brake control device and control method thereof | |
| CN102849548A (en) | Elevator speed controller for rated-speed-exceeding running and control method of controller | |
| CN201932765U (en) | Control device for cable drum | |
| CN103787044B (en) | Hydroelectric project belt-type transport plane overload disposal system and method | |
| CN105774822A (en) | Speed regulation device and method for mine aerial man-riding ropeway | |
| CN108438777B (en) | Control method of parcel supply platform | |
| CN203959715U (en) | A kind of anti roll device of blast furnace hoisting system and truck thereof | |
| JP2004149231A (en) | Emergency stop device of elevator | |
| CN111320079B (en) | Positioning and anti-swing unmanned vehicle control method | |
| CN100453428C (en) | Speed-variable cable-driven belt conveyer capable of carrying people and goods | |
| CN208378301U (en) | A kind of lifting mechanism of tower crane Special safety braking system | |
| CN104261258B (en) | Control method when a kind of heavy object of crane is transferred and control system | |
| CN111026021A (en) | Safety protection device suitable for belt transmission and control method | |
| CN201261679Y (en) | Car arrester self-locking gear for incline shaft hoisting system | |
| CN210480703U (en) | Anti-falling speed reducer for electric hoist crane | |
| CN202924398U (en) | Blast furnace skip car conveying system | |
| CN203682508U (en) | Overload processing system of hydropower engineering belt conveyer | |
| CN201553551U (en) | Main lifting combine height and balance correcting system of 400ton overhead traveling crane | |
| CN203461752U (en) | Descending system of hoisting winch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |