CA2673063A1 - Electromechanical tension stabilizer - Google Patents
Electromechanical tension stabilizer Download PDFInfo
- Publication number
- CA2673063A1 CA2673063A1 CA 2673063 CA2673063A CA2673063A1 CA 2673063 A1 CA2673063 A1 CA 2673063A1 CA 2673063 CA2673063 CA 2673063 CA 2673063 A CA2673063 A CA 2673063A CA 2673063 A1 CA2673063 A1 CA 2673063A1
- Authority
- CA
- Canada
- Prior art keywords
- ets
- tension
- flexible elastic
- elastic element
- electromechanical
- 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.)
- Abandoned
Links
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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
-
- 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
- B65G23/32—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements for effecting drive at two or more points spaced along the length of the conveyors
Abstract
Flexible elastic element, used as a vehicle for transportation of a bulk material, accumulates tension during passing at each supporting point along its length.
Over certain number of the supporting points the tension in the flexible elastic element could reach its technical limitations. This tension can be maintained at the acceptable level by using an intermediate drives.
The intermediate drive moves the flexible elastic element by wrapping around the drive pulley. This requires certain level of the initial tension force. Lack of sufficient initial tension could cause slipping of the flexible elastic element on the drive pulley surface. This slipping effect can be avoided by continuous monitoring and adjustment of the initial tension. Without continuous adjustment of the initial tension force the irrational power sharing between the drives could take place and as result of it, inability of the flexible elastic element to handle the design capacity.
Over certain number of the supporting points the tension in the flexible elastic element could reach its technical limitations. This tension can be maintained at the acceptable level by using an intermediate drives.
The intermediate drive moves the flexible elastic element by wrapping around the drive pulley. This requires certain level of the initial tension force. Lack of sufficient initial tension could cause slipping of the flexible elastic element on the drive pulley surface. This slipping effect can be avoided by continuous monitoring and adjustment of the initial tension. Without continuous adjustment of the initial tension force the irrational power sharing between the drives could take place and as result of it, inability of the flexible elastic element to handle the design capacity.
Description
1.0 BACKGROUND OF THE INVENTION
1.1 Field of invention use The idea described in this invention relates to control of the initial tension into a flexible elastic element at each drive pulley. Elastic element could be a fabric carcass or steel wire rope. The invented embodiment for control and adjustment of the initial tension comprises electro-mechanical arrangement that has to be located at the points where the above mentioned control and adjustment of initial tension becomes most effective. The embodiment of this invention is aimed to avoid "slipping effect" and maintaining better control of the power sharing between the unlimited numbers of the intermediate drives.
1.2 Prior Art Providing of an initial tension level for flexible elastic elements (moved by a drive pulley), so far is performed by using a single take-up unit with winch or ballast, or combination of both. Using a single fix size take-up is proved as a successful method as long as the system includes one or small number of drives located close each other. In case of using more drives located at very long distances away each other, the existing method, of using one fix take-up system, becomes less and less reliable. In the case of few dozens or higher number of drives, the above described system (one single fix take-up) can not withstand the combination of the physical effects like variation the tension forces and vibrations associated with a variety of the landscape at very long transportation system. The task of control and power sharing over huge number of drives becomes very complex. This is in terms of great number of variables involved during the starting, stopping, unstable feed, landscape differences and the elasticity of the transporting element. The problem of power sharing control becomes more complex when the effects of different stretching level from point to point take place.
The unlimited combination of such stretching waves spreading along the transporting system making situation uncontrollable.
2.3 The invention.
The invention presents embodiment which is incorporated with a conventional fix size take-up. This invention represents additional arrangement which has flexibility for self adopting tensioning force and is located in vicinity to each drive. This method allows compensating of any deviation of the basic initial tension for each drive to its individual needs.
The embodiment indicates any change of the sag level as a function of the local deviated tension into the flexible elastic element. While the tension is changing the embodiment's indicator moves to a new position respectively to the sag level.
By this movement the new tension is created. The embodiment is able of increasing or reducing the tension into the flexible elastic element asymptotically. The new tension level stops stretching waves and sends the signal to the located in vicinity the drive pulley torque analyzer. This is changing the torque level on the shaft of the drive pulley, which is located in the vicinity to this embodiment. Since the torque level of the drive pulley is re-adjusted the embodiment's tension stabilizer returns to initial "zero"
position (see part No 6 at Fig No 1). The change is completed by sending the message/signal to the central control system for re-adjustment of the power sharing for the rest of the drive pulleys.
The "zero" position is the point associated with the location of the embodiment's tension stabilizer/indicator based on the calculated forces level at stable environment (i.e. no acceleration or deceleration of the conveying system). By this way the embodiment stabilizes local drive pulley torque to a new required level.
1.1 Field of invention use The idea described in this invention relates to control of the initial tension into a flexible elastic element at each drive pulley. Elastic element could be a fabric carcass or steel wire rope. The invented embodiment for control and adjustment of the initial tension comprises electro-mechanical arrangement that has to be located at the points where the above mentioned control and adjustment of initial tension becomes most effective. The embodiment of this invention is aimed to avoid "slipping effect" and maintaining better control of the power sharing between the unlimited numbers of the intermediate drives.
1.2 Prior Art Providing of an initial tension level for flexible elastic elements (moved by a drive pulley), so far is performed by using a single take-up unit with winch or ballast, or combination of both. Using a single fix size take-up is proved as a successful method as long as the system includes one or small number of drives located close each other. In case of using more drives located at very long distances away each other, the existing method, of using one fix take-up system, becomes less and less reliable. In the case of few dozens or higher number of drives, the above described system (one single fix take-up) can not withstand the combination of the physical effects like variation the tension forces and vibrations associated with a variety of the landscape at very long transportation system. The task of control and power sharing over huge number of drives becomes very complex. This is in terms of great number of variables involved during the starting, stopping, unstable feed, landscape differences and the elasticity of the transporting element. The problem of power sharing control becomes more complex when the effects of different stretching level from point to point take place.
The unlimited combination of such stretching waves spreading along the transporting system making situation uncontrollable.
2.3 The invention.
The invention presents embodiment which is incorporated with a conventional fix size take-up. This invention represents additional arrangement which has flexibility for self adopting tensioning force and is located in vicinity to each drive. This method allows compensating of any deviation of the basic initial tension for each drive to its individual needs.
The embodiment indicates any change of the sag level as a function of the local deviated tension into the flexible elastic element. While the tension is changing the embodiment's indicator moves to a new position respectively to the sag level.
By this movement the new tension is created. The embodiment is able of increasing or reducing the tension into the flexible elastic element asymptotically. The new tension level stops stretching waves and sends the signal to the located in vicinity the drive pulley torque analyzer. This is changing the torque level on the shaft of the drive pulley, which is located in the vicinity to this embodiment. Since the torque level of the drive pulley is re-adjusted the embodiment's tension stabilizer returns to initial "zero"
position (see part No 6 at Fig No 1). The change is completed by sending the message/signal to the central control system for re-adjustment of the power sharing for the rest of the drive pulleys.
The "zero" position is the point associated with the location of the embodiment's tension stabilizer/indicator based on the calculated forces level at stable environment (i.e. no acceleration or deceleration of the conveying system). By this way the embodiment stabilizes local drive pulley torque to a new required level.
3.0 SUMMARY OF THE INVENTION
3.1 The name The name of the invention is: ETS.
The abbreviated form ETS means: Electromechanical Tension Stabilizer 3.2 Aim of the invention The aim of the invention is using the electromechanical arrangement for an initial tension control. In addition the invented embodiment is aimed to serve following functions:
a) To allow sequential start-up b) To allow proper power sharing.
c) To avoid belt overstressing.
d) To avoid slipping effect on the drive pulley.
e) To avoid spreading of a vibration waves along the flexible elastic element.
3.3 The components of the ETS.
The specified components of the ETS arrangement covered by this invention and used for this particular application are as follows:
1) Pivoted frame.
2) Pivoting arrangement.
3) Pulley/Roller 4) Holding Pulley/Roller bracket 5) Bottom proximity switch 6) Zero position proximity switch 7) Top proximity switch 8) Universal choke 9) Ballast 10) Emergency switch 3.4 General description of the concept.
The idea of this invention is to indicate, to adjust and to stabilize the initial tension level into a flexible elastic element at each drive pulley individually. A
flexible elastic element is used as a vehicle for transportation of a bulk material. In order to cause movement of the flexible elastic element the drive pulleys are used. The transferring of motion effect from drive pulleys to a flexible elastic element is requiring certain initial tension.
Initial tension at each drive pulley comprises two components. One, is the mutual (for all drive pulleys) the conventional take-up system located at the tail of the transporting system. The second component is the electromechanical tension stabilizer (ETS). This component is located in vicinity of each drive house (see Fig 1) and allows maintaining proper level of the initial tension at each drive pulley individually.
Additional functions of each electromechanical tension stabilizer are:
(a) Providing the necessary information to the control system. helping to distribute power respectively to each of the drive pulleys, (b) Avoiding of spreading a vibration waves along the flexible elastic element.
The ETS device is adjusting the initial tension of the flexible elastic element by following process.
The Pulley/Roller of the ETS device (part No 3) installed on the pivoted frame (part No 1) clamping the flexible elastic element down (Fig 1). In this arrangement the ETS
device is able to indicate the tension change of the flexible elastic element.
Any difference in the tension is reflected by a sag change and as result of it tilting the ETS's pivoting frame (part No 1) to a new position. By tilting the pivoting frame (under sag change) the ETS adjusting locally the initial tension level. While the Pivoted frame (part No 1) is tilted, the Proximity switches (parts No 5, 6 or 7) signaling the control system about the movement. As result of it, the control system transfers signal to the drive located in vicinity of the ETS. The drive torque of the located in vicinity driven pulley, is changed to a new level.
At the same time, the control system readjusting the total torque share of all other drives to a new balance.
3.1 The name The name of the invention is: ETS.
The abbreviated form ETS means: Electromechanical Tension Stabilizer 3.2 Aim of the invention The aim of the invention is using the electromechanical arrangement for an initial tension control. In addition the invented embodiment is aimed to serve following functions:
a) To allow sequential start-up b) To allow proper power sharing.
c) To avoid belt overstressing.
d) To avoid slipping effect on the drive pulley.
e) To avoid spreading of a vibration waves along the flexible elastic element.
3.3 The components of the ETS.
The specified components of the ETS arrangement covered by this invention and used for this particular application are as follows:
1) Pivoted frame.
2) Pivoting arrangement.
3) Pulley/Roller 4) Holding Pulley/Roller bracket 5) Bottom proximity switch 6) Zero position proximity switch 7) Top proximity switch 8) Universal choke 9) Ballast 10) Emergency switch 3.4 General description of the concept.
The idea of this invention is to indicate, to adjust and to stabilize the initial tension level into a flexible elastic element at each drive pulley individually. A
flexible elastic element is used as a vehicle for transportation of a bulk material. In order to cause movement of the flexible elastic element the drive pulleys are used. The transferring of motion effect from drive pulleys to a flexible elastic element is requiring certain initial tension.
Initial tension at each drive pulley comprises two components. One, is the mutual (for all drive pulleys) the conventional take-up system located at the tail of the transporting system. The second component is the electromechanical tension stabilizer (ETS). This component is located in vicinity of each drive house (see Fig 1) and allows maintaining proper level of the initial tension at each drive pulley individually.
Additional functions of each electromechanical tension stabilizer are:
(a) Providing the necessary information to the control system. helping to distribute power respectively to each of the drive pulleys, (b) Avoiding of spreading a vibration waves along the flexible elastic element.
The ETS device is adjusting the initial tension of the flexible elastic element by following process.
The Pulley/Roller of the ETS device (part No 3) installed on the pivoted frame (part No 1) clamping the flexible elastic element down (Fig 1). In this arrangement the ETS
device is able to indicate the tension change of the flexible elastic element.
Any difference in the tension is reflected by a sag change and as result of it tilting the ETS's pivoting frame (part No 1) to a new position. By tilting the pivoting frame (under sag change) the ETS adjusting locally the initial tension level. While the Pivoted frame (part No 1) is tilted, the Proximity switches (parts No 5, 6 or 7) signaling the control system about the movement. As result of it, the control system transfers signal to the drive located in vicinity of the ETS. The drive torque of the located in vicinity driven pulley, is changed to a new level.
At the same time, the control system readjusting the total torque share of all other drives to a new balance.
Claims
4.0 The Claims for this particular application 4.1. The Electromechanical Tension Stabilizer (ETS) is the part of the take-up system.
4.2. The tension force created by the Electromechanical Tension Stabilizer (ETS) is inverse function of the sag size of the flexible elastic element.
4.3. The Electromechanical Tension Stabilizer (ETS) compensates initial tension force for local drive pulley.
4.4. The Electromechanical Tension Stabilizer (ETS) is used as an indicator of torque level for closest drive pulley.
4.5. The Electromechanical Tension Stabilizer (ETS) is a tool avoiding the slipping effect between the flexible elastic element and the surface of the closest drive pulley.
4.6. The Electromechanical Tension Stabilizer (ETS) signaling the time of activating the closest drive pulley at the start-up period.
4.7. The Electromechanical Tension Stabilizer (ETS) is able to indicate and transfer information to control system in case of the power failure of the closest drive.
4.8. The universal choke of the Electromechanical Tension Stabilizer (ETS) avoids spreading of stretching waves caused by the fluctuated tension into the flexible elastic element.
4.9. The Electromechanical Tension Stabilizer (ETS) allows switching/activate the drive pulleys in the required sequence during the start period.
4.10. The Electromechanical Tension Stabilizer (ETS) has a feature of the asymptotical change of the initial tension inversely to the sag of the flexible elastic element.
4.11. The Electromechanical Tension Stabilizer (ETS) avoiding overstressing the flexible elastic element.
4.12. The Electromechanical Tension Stabilizer (ETS) allows control of the power sharing between the drives pulleys by monitoring and indicating the local sags of the flexible elastic element.
4.13. The Electromechanical Tension Stabilizer (ETS) allows proper power distribution along the transporting and return part of the flexible elastic unit.
4.14. The Electromechanical Tension Stabilizer (ETS) are installed and controlling the initial tension at every drive pulley along the flexible elastic element of carrying and return part of the transporting system.
4.2. The tension force created by the Electromechanical Tension Stabilizer (ETS) is inverse function of the sag size of the flexible elastic element.
4.3. The Electromechanical Tension Stabilizer (ETS) compensates initial tension force for local drive pulley.
4.4. The Electromechanical Tension Stabilizer (ETS) is used as an indicator of torque level for closest drive pulley.
4.5. The Electromechanical Tension Stabilizer (ETS) is a tool avoiding the slipping effect between the flexible elastic element and the surface of the closest drive pulley.
4.6. The Electromechanical Tension Stabilizer (ETS) signaling the time of activating the closest drive pulley at the start-up period.
4.7. The Electromechanical Tension Stabilizer (ETS) is able to indicate and transfer information to control system in case of the power failure of the closest drive.
4.8. The universal choke of the Electromechanical Tension Stabilizer (ETS) avoids spreading of stretching waves caused by the fluctuated tension into the flexible elastic element.
4.9. The Electromechanical Tension Stabilizer (ETS) allows switching/activate the drive pulleys in the required sequence during the start period.
4.10. The Electromechanical Tension Stabilizer (ETS) has a feature of the asymptotical change of the initial tension inversely to the sag of the flexible elastic element.
4.11. The Electromechanical Tension Stabilizer (ETS) avoiding overstressing the flexible elastic element.
4.12. The Electromechanical Tension Stabilizer (ETS) allows control of the power sharing between the drives pulleys by monitoring and indicating the local sags of the flexible elastic element.
4.13. The Electromechanical Tension Stabilizer (ETS) allows proper power distribution along the transporting and return part of the flexible elastic unit.
4.14. The Electromechanical Tension Stabilizer (ETS) are installed and controlling the initial tension at every drive pulley along the flexible elastic element of carrying and return part of the transporting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2673063 CA2673063A1 (en) | 2009-07-24 | 2009-07-24 | Electromechanical tension stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2673063 CA2673063A1 (en) | 2009-07-24 | 2009-07-24 | Electromechanical tension stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2673063A1 true CA2673063A1 (en) | 2011-01-24 |
Family
ID=43513996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2673063 Abandoned CA2673063A1 (en) | 2009-07-24 | 2009-07-24 | Electromechanical tension stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2673063A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015039736A3 (en) * | 2013-09-18 | 2015-07-02 | Schenck Process S.R.O. | Device for indication and setting of operating tension of an endless chain strand |
| EP3241785A1 (en) * | 2016-05-03 | 2017-11-08 | René Brunone | Belt conveyor with a device for assessing the belt tension |
-
2009
- 2009-07-24 CA CA 2673063 patent/CA2673063A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015039736A3 (en) * | 2013-09-18 | 2015-07-02 | Schenck Process S.R.O. | Device for indication and setting of operating tension of an endless chain strand |
| CN105408230A (en) * | 2013-09-18 | 2016-03-16 | 申克股份有限公司 | Device for indication and setting of operating tension of an endless chain strand |
| CN105408230B (en) * | 2013-09-18 | 2017-05-10 | 申克股份有限公司 | Device for indication and setting of operating tension of an endless chain strand |
| US9738453B2 (en) | 2013-09-18 | 2017-08-22 | Schenck Process S.R.O. | Device for indication and setting of operating tension of an endless chain strand |
| EP3241785A1 (en) * | 2016-05-03 | 2017-11-08 | René Brunone | Belt conveyor with a device for assessing the belt tension |
| FR3050985A1 (en) * | 2016-05-03 | 2017-11-10 | Rene Brunone | BELT CONVEYOR WITH DEVICE FOR EVALUATING THE TENSION OF THE BAND |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |