CN110745473B - Tension detection method for tensioning device of mobile trestle type belt conveyor - Google Patents
Tension detection method for tensioning device of mobile trestle type belt conveyor Download PDFInfo
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- CN110745473B CN110745473B CN201911050151.7A CN201911050151A CN110745473B CN 110745473 B CN110745473 B CN 110745473B CN 201911050151 A CN201911050151 A CN 201911050151A CN 110745473 B CN110745473 B CN 110745473B
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- tension
- steel wire
- hydraulic motor
- wire rope
- belt conveyor
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- 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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
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- 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
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- 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
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
-
- 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
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
Abstract
The invention relates to a tension detection method of a tension device of a mobile trestle type belt conveyor, wherein the tension device is provided with a tension sensor on a steel wire rope between two fixed pulleys close to a winch, and the invention obtains the pressure difference of an oil circuit at an inlet and an outlet of a hydraulic motor in real time by installing a differential pressure sensor on a hydraulic motor (5) of the tension device, thereby calculating the tension of the steel wire rope, and comparing the tension with the tension of the steel wire rope measured by the tension sensor on the steel wire rope, thus judging whether the tension sensor has faults or not.
Description
Technical Field
The invention belongs to the technical field of tension detection, and particularly relates to a tension detection method for a tensioning device of a mobile trestle type belt conveyor.
Background
The tension device is one of the main components of the belt conveyor, and mainly provides certain tension force for the normal operation of a conveying belt of the belt conveyor, so that the tension of the minimum tension point of the conveying belt is ensured, the permanent elongation of the conveying belt is compensated, and when a tension sensor of the tension device breaks down, the tension value cannot be detected, so that the tension is too large or too small; an excessively large belt may be pulled out and an excessively small belt may slip.
Disclosure of Invention
The invention provides a tension detection method for a tensioning device of a mobile trestle type belt conveyor, which aims to solve the technical problems that: when the tension sensor of the tension device has a fault, the tension value can not be detected.
In order to solve the technical problem, the invention provides a tension detection method of a tension device of a mobile trestle type belt conveyor, wherein the tension device is provided with a tension sensor on a steel wire rope between two fixed pulleys close to a winch, and the tension detection method is characterized by comprising the following steps of:
s1, installing a differential pressure sensor on the hydraulic motor 5 of the tensioning device, and connecting an inlet-outlet oil way of the hydraulic motor with an inlet-outlet of the differential pressure sensor to obtain the working pressure difference of the inlet-outlet oil way of the hydraulic motor in real time;
s2, obtaining the output torque of the hydraulic motor according to the working pressure difference delta P of the oil way of the inlet and the outlet of the hydraulic motor;
s3, the winch pulls the two steel wire ropes to pull the four movable pulleys to drag the tensioning roller to realize belt tensioning, and if the current steel wire rope tension is FNThe output torque T of the hoist can be known as r FNCos alpha 2, wherein alpha is an included angle between the steel wire rope and the vertical direction;
s4, the output torque T of the winch is equal to the output torque M of the hydraulic motor; can finally be found out
S5, acquiring the steel wire rope tension measured by the tension sensor on the steel wire rope in real time, and calculating the steel wire rope tension with the steel wire rope tension F obtained in the step S4NAnd comparing, and if the difference value of the two exceeds a certain range, indicating that the tension sensor arranged on the steel wire rope has a fault and needs to be stopped for maintenance.
Has the advantages that: according to the invention, the differential pressure sensor is arranged on the hydraulic motor 5 of the tensioning device, so that the pressure difference of the oil passages at the inlet and the outlet of the hydraulic motor is obtained in real time, and the tension F of the steel wire rope is calculatedNAnd comparing the tension with the steel wire rope tension measured by the tension sensor on the steel wire rope, and judging whether the tension sensor has faults or not.
Drawings
FIG. 1 is a schematic view of a mobile trestle belt conveyor tensioning device;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic view of a differential pressure sensor structure.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
The invention provides a tension detection method of a tension device of a mobile trestle type belt conveyor, wherein a hydraulic motor 5 of the tension device drives a winch 4 to drive a steel wire rope to pull a tension roller 6 through a fixed pulley 2 and a movable pulley 1 to realize belt tension, and a tension sensor 3 is arranged on the steel wire rope between the two fixed pulleys 2 close to the winch; the method is characterized by comprising the following steps:
s1, installing a differential pressure sensor on the hydraulic motor 5 of the tensioning device, and connecting an inlet-outlet oil way of the hydraulic motor with an inlet-outlet of the differential pressure sensor, so that the pressure difference of the inlet-outlet oil way of the hydraulic motor can be obtained in real time;
s2, according to the hydraulic motor output torque formula:
vg: displacement per revolution of the hydraulic motor, unit: cm3/r；
Δ P: working pressure difference MPa of an inlet and an outlet of the hydraulic motor;
ηmh: mechanical efficiency of hydraulic motor
Vg of 80.8cm for a known NG80 hydraulic motor3/r；
ηmh0.8 to 0.9, 0.85 is selected.
Thereby obtaining
S3, the radius r of the winding machine of the tension device is 260 mm; the belt tensioning is realized by dragging four movable pulleys to drag the tensioning roller by the winch through two steel wire ropes, and assuming that the current tension of the steel wire ropes is FNThe output torque T of the hoist can be known as r FNCos alpha 2, alpha is an included angle between the steel wire rope and the vertical direction, and the included angle is very small and can be ignored, so that cos alpha is approximately equal to 1;
s4, the output torque T of the winch is equal to the output torque M of the hydraulic motor; can finally be found out
S5, acquiring the steel wire rope tension measured by the tension sensor on the steel wire rope in real time, and calculating the steel wire rope tension with the steel wire rope tension F obtained in the step S4NAnd comparing, and if the difference value of the two exceeds a certain range, indicating that the tension sensor arranged on the steel wire rope has a fault and needs to be stopped for maintenance.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A tension detection method for a tension device of a mobile trestle type belt conveyor is characterized in that the tension device is provided with a tension sensor, and the method comprises the following steps:
s1, installing a differential pressure sensor on a hydraulic motor (5) of the tensioning device, wherein an inlet-outlet oil way of the hydraulic motor is connected with an inlet and an outlet of the differential pressure sensor and is used for acquiring the working pressure difference of the inlet-outlet oil way of the hydraulic motor in real time;
s2, obtaining the output torque of the hydraulic motor according to the working pressure difference delta P of the oil way of the inlet and the outlet of the hydraulic motor;
s3, the winch pulls the two steel wire ropes to pull the four movable pulleys to drag the tensioning roller to realize belt tensioning, and if the current steel wire rope tension is FNThe output torque T of the hoist can be known as r FNCos alpha 2, alpha is an included angle between the steel wire rope and the vertical direction, and r represents the radius of the winch;
s4, the output torque T of the winch is equal to the output torque M of the hydraulic motor; can finally be found out
S5, acquiring the steel wire rope tension measured by the tension sensor on the steel wire rope in real time, and calculating the steel wire rope tension with the steel wire rope tension F obtained in the step S4NAnd comparing, and if the difference value of the two exceeds a certain range, indicating that the tension sensor arranged on the steel wire rope has a fault and needs to be stopped for maintenance.
2. The tension detection method of the tension device of the mobile trestle type belt conveyor according to claim 1, characterized in that: the hydraulic motor of the tensioning device drives the winch to drive the steel wire rope to pull the tensioning roller to realize belt tensioning through the fixed pulley and the movable pulley.
3. The tension detection method of the tension device of the mobile trestle type belt conveyor according to claim 1, characterized in that: the hydraulic motor output torque M is:
vg: displacement of the hydraulic motor per revolution;
Δ P: the working pressure difference of the oil circuit at the inlet and the outlet of the hydraulic motor;
ηmh: mechanical efficiency of the hydraulic motor.
4. The tension detection method of the tension device of the mobile trestle type belt conveyor according to claim 1, characterized in that: cos α ≈ 1.
5. The tension detection method of the tension device of the mobile trestle type belt conveyor according to claim 1, characterized in that: the tension sensor is arranged on the steel wire rope between the two fixed pulleys close to the winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050151.7A CN110745473B (en) | 2019-10-31 | 2019-10-31 | Tension detection method for tensioning device of mobile trestle type belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050151.7A CN110745473B (en) | 2019-10-31 | 2019-10-31 | Tension detection method for tensioning device of mobile trestle type belt conveyor |
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| Publication Number | Publication Date |
|---|---|
| CN110745473A CN110745473A (en) | 2020-02-04 |
| CN110745473B true CN110745473B (en) | 2021-05-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0326755D0 (en) * | 2003-11-17 | 2003-12-17 | Triple Edge Ltd | Self-tracking device for an endless belt |
| CN202054392U (en) * | 2011-03-29 | 2011-11-30 | 北京奕康拓科技发展有限责任公司 | Rubber belt conveyer and tensioning system thereof |
| CN102502186A (en) * | 2011-12-19 | 2012-06-20 | 上海发电设备成套设计研究院 | Adjusting method for belt tension of electronic weighing type coal feeder |
| CN105417014A (en) * | 2015-12-02 | 2016-03-23 | 中国神华能源股份有限公司 | Full-automatic tensioning control system and method used for rubber belt machine |
| CN108190392A (en) * | 2017-12-20 | 2018-06-22 | 太原理工大学 | A kind of ribbon conveyer hydraulic tensioning power dynamic measures and feedback method |
-
2019
- 2019-10-31 CN CN201911050151.7A patent/CN110745473B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0326755D0 (en) * | 2003-11-17 | 2003-12-17 | Triple Edge Ltd | Self-tracking device for an endless belt |
| CN202054392U (en) * | 2011-03-29 | 2011-11-30 | 北京奕康拓科技发展有限责任公司 | Rubber belt conveyer and tensioning system thereof |
| CN102502186A (en) * | 2011-12-19 | 2012-06-20 | 上海发电设备成套设计研究院 | Adjusting method for belt tension of electronic weighing type coal feeder |
| CN105417014A (en) * | 2015-12-02 | 2016-03-23 | 中国神华能源股份有限公司 | Full-automatic tensioning control system and method used for rubber belt machine |
| CN108190392A (en) * | 2017-12-20 | 2018-06-22 | 太原理工大学 | A kind of ribbon conveyer hydraulic tensioning power dynamic measures and feedback method |
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| CN110745473A (en) | 2020-02-04 |
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