CN217321986U - Automatic tensioning device of belt conveyor - Google Patents
Automatic tensioning device of belt conveyor Download PDFInfo
- Publication number
- CN217321986U CN217321986U CN202220906009.9U CN202220906009U CN217321986U CN 217321986 U CN217321986 U CN 217321986U CN 202220906009 U CN202220906009 U CN 202220906009U CN 217321986 U CN217321986 U CN 217321986U
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- winch
- belt conveyor
- tensioning
- automatic
- tension
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 230000007257 malfunction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model relates to a colliery is automatic control device in the pit specifically is an automatic overspeed device tensioner of belt conveyor. The technical problems that automatic tensioning cannot be achieved by an existing telescopic belt conveyor winch fixing and tensioning device and control failure protection cannot be achieved by an ordinary belt conveyor automatic tensioning device in the market are solved. A tensioning winch is arranged on the winch bracket; the moving trolley is positioned behind the winch bracket and is provided with a group of moving pulleys; the steel wire rope sequentially bypasses the tensioning winch, the guide pulley, the fixed pulley and the movable pulley and is connected with a tensioning frame of the belt conveyor through the tension sensor and the tension buffer cylinder. The utility model provides a current fixed overspeed device tensioner can't adjust by oneself problem, overcome the unable problem of absorbing the regulation of the tensile force that belt feeder tension size produced under the different work condition, solved the safety problem that causes because the tensioning winch malfunction that the signal lag control became invalid causes simultaneously.
Description
Technical Field
The utility model relates to a colliery is automatic control device in the pit specifically is an automatic overspeed device tensioner of belt conveyor.
Background
The tension device is a basic component of the belt conveyor and is an important part for ensuring the normal operation of the belt conveyor. The belt conveyor tensioning device has a vital function on the stable operation of the belt conveyor, the performance of the belt conveyor tensioning device directly influences the working performance of the whole belt conveyor, and the reasonable design of the tensioning device is important.
The tensioning device ensures enough tension of a separation point of a driving roller of the belt conveyor, prevents the conveying belt from slipping, transmits friction traction force transmitted by the driving device to the conveying belt to drive the conveyor to normally operate, compensates plastic deformation generated when the conveying belt is in an excessive working condition, absorbs extension change generated by creep deformation, maintains the minimum tension required by normal operation of the conveyor, and ensures normal operation of the belt conveyor. At present, most of telescopic belt conveyor tensioning devices adopt winch fixed tensioning devices, and the tensioning conveyor belts of the type basically have the functions of tensioning only, and can be tensioned again after being discovered by people when the tensioning force is reduced due to the fact that the conveyor belts are stretched for various reasons. Or a common automatic winch tensioning device is adopted, the automatic tensioning can only be realized at a stable stage, the tension of the conveying belt at the stable stage is kept constant, and the tension cannot be automatically controlled according to the requirement of the operation condition of the belt conveyor. Due to the influence of factors such as low quality of the pressure sensor, signal lag of an inertia machine of a mechanical system and the like, the phenomenon of misoperation of the automatic winch tensioning device influences the safe use effect of the automatic winch tensioning device. When problems occur in the winch and the control system, the belt conveyor cannot generate a constant tension or the tension fails, and the safety reliability is relatively reduced. Therefore, how to automatically adjust the tension of the belt conveyor according to the use working condition of the belt conveyor in the use process has extremely important significance.
Disclosure of Invention
The utility model discloses a solve the fixed overspeed device tensioner of current telescopic belt conveyor winch and can't realize automatic tensioning and the technical problem that ordinary belt conveyor automatic take-up device can't realize control failure protection on the market, provide a belt conveyor automatic take-up device.
The utility model discloses an adopt following technical scheme to realize: an automatic tensioning device of a belt conveyor comprises a winch bracket, a traveling trolley, a steel wire rope and a controller; a tensioning winch is installed on the winch support, a guide pulley is installed at the front end of the winch support, and a group of fixed pulleys is installed at the rear end of the winch support; the travelling trolley is positioned behind the winch bracket and is provided with a group of movable pulleys; the steel wire rope sequentially bypasses the tensioning winch, the guide pulley, the fixed pulley and the movable pulley and is connected with a tensioning frame of the belt conveyor through the tension sensor; the signal output end of the tension sensor is connected with the signal input end of the controller, and the signal output end of the controller is connected with the control end of the driving motor of the tensioning winch.
The utility model discloses at belt conveyor rise and tightly install force sensor between the pull wire rope between the frame and the dolly that moves about for gather the tension signal of belt under the different work condition, dispose corresponding controller and be used for showing tension size, adjust and set for opening of tensioning winch and stop the tension value.
The working principle of the utility model is as follows: in the automatic control mode, a driver operates a start button of the belt conveyor tensioning device in a inching mode, and the tensioning device enters a working state. The control system firstly self-checks the belt tension, if the tension is smaller than the set lower limit, the tensioning control system is started, when the tension enables the tension of the steel wire rope to reach the set upper limit (the specific numerical value can be set according to the actual requirements on the site), the tensioning winch stops working to ensure the enough tension of the driving roller separation point of the belt conveyor and prevent the conveyor belt from slipping, so that the friction traction force transmitted by the driving device is transmitted to the conveyor belt, and the conveyor belt is driven to normally run. The automatic tensioning device is started when the tension is smaller than a set value, and after the adjustment is finished, the tensioning is automatically stopped to maintain the minimum tension required by the normal operation of the conveyor, so that the normal operation of the belt conveyor is ensured.
Furthermore, a travel switch is arranged on the travelling trolley and matched with a control end of a driving motor of the tensioning winch; the device is used for preventing the phenomenon that the tension overrun winch does not stop after the control system fails.
If the travel switch is switched off when the control failure travelling trolley exceeds the set position in the control process, the automatic tensioning device stops working, so that the safe operation of the belt conveyor is ensured.
Furthermore, the tension sensor is connected with a tension frame of the belt conveyor through a tension buffer cylinder, and meanwhile, the tension buffer cylinder can absorb transient tension fluctuation in the operation process of the belt.
The utility model has the advantages that: the utility model discloses it is rational in infrastructure reliable, solved the problem that current fixed overspeed device tensioner can't be adjusted by oneself, overcome the unable problem of absorbing the regulation of the tensile force that belt feeder tension size produced under the different work condition, solved the safety problem that the tensioning winch malfunction caused because signal lag control became invalid simultaneously.
Drawings
Fig. 1 is a schematic diagram of the structure and signal control of the present invention.
Fig. 2 is a schematic view of installation control of the present invention.
Fig. 3 is a schematic structural diagram of the belt conveyer.
1-tension buffer cylinder, 2-tension sensor, 3-winch support, 4-guide pulley, 5-tensioning winch, 6-steel wire rope, 7-fixed pulley, 8-traveling trolley, 9-movable pulley, 10-travel switch, 11-explosion-proof switch, 12-controller, 13-winch motor, 14-driving roller, 15-nose unloading roller, 16-belt conveyor support and 17-belt.
Detailed Description
Example 1
As shown in fig. 1 and 2, an automatic tensioning device of a belt conveyor comprises a winch support 3, a traveling trolley 8, a steel wire rope 6 and a controller 12; a tensioning winch 5 is installed on the winch support 3, a guide pulley 4 is installed at the front end of the winch support 3, and a group of fixed pulleys 7 are installed at the rear end of the winch support 3; the moving trolley 8 is positioned behind the winch bracket 3, and a group of moving pulleys 9 are arranged on the moving trolley 8; the steel wire rope 6 sequentially rounds a tensioning winch 5, a guide pulley 4, a fixed pulley 7 and a movable pulley 9 (the fixed pulley and the movable pulley form a pulley block, and the steel wire rope is wound back and forth), and is connected with a tensioning frame of the belt conveyor through a tension sensor 2 and a tension buffer cylinder (device); the control end of the winch motor 13 adopts an explosion-proof switch 11, the signal output end of the tension sensor 2 is connected with the signal input end of a controller 12, and the signal output end of the controller 12 is connected with the explosion-proof switch 11 of the winch motor 13 of the tensioning winch 5; the front end of the travelling trolley 8 is provided with a travel switch 10, and the travel switch 10 is matched with an explosion-proof switch 11 of a winch motor 13. The fixed pulley and the movable pulley form a pulley block for dragging the traveling trolley. The utility model discloses install force sensor between the pull wire rope between belt conveyor tension buffer cylinder and the dolly that moves about for gather the tension signal of belt under the different work condition, dispose corresponding controller and be used for showing tension size, adjust and set for opening of tensioning winch and stop the tension value. The tensioning frame is a structure fixed on the belt conveyer. The winch support is fixed on the ground.
The working principle of the embodiment 1 is as follows: in the automatic control mode, a driver operates a start button (on a controller) of the belt conveyor tensioning device in a inching mode, and the tensioning device enters a working state. The control system firstly self-checks the belt tension, if the tension is smaller than the set lower limit, the tensioning control system is started, the driving motor drives the tensioning winch to rotate, the traveling trolley moves towards the direction of the winch support (moves towards the right in the figure 1), when the tension enables the steel wire rope tension to reach the set upper limit (specific numerical values can be set according to actual requirements on site), the tensioning winch stops working to ensure enough tension of the driving roller and drum separation point of the belt conveyor, the conveyor belt is prevented from slipping, and therefore the friction traction force transmitted by the driving device is transmitted to the conveyor belt, and the belt conveyor is enabled to normally operate. The automatic tensioning device is started when the tension is smaller than a set value, and after the adjustment is finished, the tensioning is automatically stopped to maintain the minimum tension required by the normal operation of the conveyor, so that the normal operation of the belt conveyor is ensured. If the control failure of the traveling trolley exceeds the set position in the control process, the travel switch triggers the explosion-proof switch to disconnect a driving motor control loop of the tensioning winch, and the automatic tensioning device stops working, so that the safe operation of the belt conveyor is ensured.
Example 2
As shown in fig. 3, the travelling carriage 8 and the tensioning winch 5 are both located below the belt conveyor frame, the winch frame 3 being part of the belt conveyor frame 15. The belt conveyor comprises a driving roller, a machine head unloading roller, a machine tail roller and the like, and the tension buffer cylinder faces to the machine tail direction.
Example 3
The controller 12 adopts a signal control box or an industrial personal computer or a PLC controller, can receive signals of the tension sensor, and judges the tension of the steel wire rope according to a preset tension threshold value so as to determine whether to start the driving motor to enable the tensioning winch to act and further enable the tensioning frame to be tensioned.
Claims (7)
1. An automatic tensioning device of a belt conveyor is characterized by comprising a winch bracket (3), a traveling trolley (8), a steel wire rope (6) and a controller (12); a tensioning winch (5) is installed on the winch support (3), a guide pulley (4) is installed at the front end of the winch support (3), and a group of fixed pulleys (7) is installed at the rear end of the winch support (3); the moving trolley (8) is positioned behind the winch bracket (3), and a group of movable pulleys (9) are arranged on the moving trolley (8); the steel wire rope (6) sequentially bypasses the tensioning winch (5), the guide pulley (4), the fixed pulley (7) and the movable pulley (9) and is connected with a tensioning frame of the belt conveyor through the tension sensor (2); the signal output end of the tension sensor (2) is connected with the signal input end of the controller (12), and the signal output end of the controller (12) is connected with the control end of a winch motor (13) of the tensioning winch (5).
2. The automatic belt conveyor tensioning device according to claim 1, characterized in that the travelling trolley (8) is provided at its front end with a travel switch (10), the travel switch (10) being fitted to the control end of the winch motor (13).
3. The automatic tensioning device of the belt conveyor according to claim 2, characterized in that the control end of the winch motor (13) adopts an explosion-proof switch (11).
4. The automatic belt conveyor tensioning device according to any one of claims 1 to 3, characterized in that the tension sensor (2) is connected to the tension frame of the belt conveyor through a tension buffer cylinder (1).
5. A belt conveyor automatic tensioning device according to any one of claims 1 to 3, characterized in that the travelling trolley (8) and the tensioning winch (5) are located below the belt conveyor frame, the winch frame (3) being part of the belt conveyor frame (16).
6. Automatic belt conveyor tensioning device according to claim 4, characterized in that the travelling trolley (8) and the tensioning winch (5) are located below the belt conveyor frame, the winch frame (3) being part of the belt conveyor frame (16).
7. The automatic belt conveyor tensioning device according to any one of claims 1 to 3, characterized in that the controller (12) employs a signal control box or an industrial control computer or a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220906009.9U CN217321986U (en) | 2022-04-19 | 2022-04-19 | Automatic tensioning device of belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220906009.9U CN217321986U (en) | 2022-04-19 | 2022-04-19 | Automatic tensioning device of belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217321986U true CN217321986U (en) | 2022-08-30 |
Family
ID=82947722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220906009.9U Expired - Fee Related CN217321986U (en) | 2022-04-19 | 2022-04-19 | Automatic tensioning device of belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217321986U (en) |
-
2022
- 2022-04-19 CN CN202220906009.9U patent/CN217321986U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220830 |