CN220663914U - Real-time monitoring device for loose chain of scraper chain - Google Patents
Real-time monitoring device for loose chain of scraper chain Download PDFInfo
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- CN220663914U CN220663914U CN202321857781.7U CN202321857781U CN220663914U CN 220663914 U CN220663914 U CN 220663914U CN 202321857781 U CN202321857781 U CN 202321857781U CN 220663914 U CN220663914 U CN 220663914U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010516 chain-walking reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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Abstract
A real-time monitoring device for loose chains of scraper chains comprises a working shaft, a supporting guide device and a second limiting rod, wherein the working shaft is arranged between a head wheel and a riding wheel and is positioned below a chain rod of a return scraper chain; the working shaft is provided with a rotating arm at the outer part of the head casing, one side of the rotating arm deviating from the axis is connected with the heavy hammer, the upper end of the other side of the rotating arm deviating from the axis is limited by a first limiting rod, and the lower part of the rotating arm is opposite to the proximity switch. The real-time monitoring device for chain loosening of the scraper chain provided by the utility model can timely react when serious chain loosening phenomenon occurs.
Description
Technical Field
The utility model relates to a loose chain monitoring device, in particular to a real-time loose chain monitoring device for a scraper chain.
Background
After the embedded scraper conveyor runs for a period of time, chain rods in the scraper chain can stretch, and as the embedded scraper conveyor consists of n sections (n is determined by the length of the embedded scraper conveyor) of scraper chain rods, the accumulated elongation of the n sections of scraper chain rods is large even if each section of chain rod stretches for a small distance. At this time, the scraper chain is in a loose chain state, and is in a severely bent state when the scraper chain bypasses the head pulley and the riding wheel.
When the buried scraper conveyor runs through and is in a state of serious chain loosening and is not processed, the scraper chain can slip or deviate at the tail wheel. The scraper chain slips on the tail wheel, so that the buried scraper conveyor cannot continue to convey materials, and a blocking accident can be caused when the scraper chain is severe. The scraper chain is deviated at the tail wheel, so that abrasion of the tail wheel is caused, the service life of the tail wheel is reduced, meanwhile, the deviation can cause the scraper chain to rub the side plate of the middle machine shell at the middle machine shell, the running noise can be increased, and the side plate of the shell can be worn out when serious, so that a material leakage accident is caused. Moreover, as the scraper chain is too loose, the head is bent too much, and the returning scraper chain can return the material to the tail direction, so that the conveying amount is reduced, and the material is blocked in the machine shell. When serious, the return scraper chain collides with the lower layer scraper chain to be extruded, so that the buried scraper conveyor cannot be used normally, and production accidents are caused.
At present, no online detection device is used for monitoring the chain loosening phenomenon of the scraper chain in real time on the market. Generally, the utility unit will arrange to patrol and examine personnel regularly to bury scraper conveyor scraper chain running state and patrol and examine whether the scraper chain loosens the chain, judge again and record, then arrange the tensioning of maintenance personal at afterbody overspeed device tensioner department regulation scraper chain and be degree. However, this also creates new problems. Firstly, the scraper chain generates loose chain serious degree, whether the tensioning degree of the scraper chain is necessary to be adjusted or not, whether the tensioning degree of the scraper chain is required to be adjusted or not is judged through regular inspection by inspection staff, so that the personal capability of the inspection staff is required to be certain, meanwhile, the judgment accuracy of the inspection staff is unknown, and the working efficiency of the inspection staff is limited. Furthermore, because the online monitoring device is not used for monitoring the tightness degree of the scraper chain in real time and reserving data, after equipment operation faults are caused, the production party and the use party of the embedded scraper conveyor do not have related data to support, and great technical disputes are generated.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a real-time monitoring device for chain loosening of a scraper chain, which is used for monitoring the running state of the scraper chain in real time and timely reacting when the chain loosening serious phenomenon occurs.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a real-time monitoring device for loose chains of scraper chains comprises a working shaft, a supporting guide device and a second limiting rod, wherein the working shaft is arranged between a head wheel and a riding wheel and is positioned below a chain rod of a return scraper chain; the working shaft is provided with a rotating arm at the outer part of the head casing, one side of the rotating arm deviating from the axis is connected with the heavy hammer, the upper end of the other side of the rotating arm deviating from the axis is limited by a first limiting rod, and the lower part of the rotating arm is opposite to the proximity switch.
The support guiding device comprises a horizontal working plate, one end of the horizontal working plate is connected with an arc-shaped part in a smooth transition mode, the lower end of the horizontal working plate is fixed with a vertical working plate, and the vertical working plate is fixedly connected with a working shaft.
The rotating arm comprises a rotating seat arranged on the working shaft, a first working arm is fixed on one side of the rotating seat, a second working arm is fixed on the other side of the rotating seat, and an induction block is fixed at the lower end of the second working arm.
The utility model discloses a scraper chain loose chain real-time monitoring device, which has the following technical effects:
1) The operation state of the scraper chain of the buried scraper conveyor can be monitored in real time, the alarm can be given out in time when the serious chain loosening phenomenon occurs, the judgment accuracy is high, and the monitored signal is fed back to the DCS central control system in real time for display and archiving.
2) When serious chain loosening signal alarm is met, a user can timely arrange personnel to go to the field for processing, and the inspection personnel do not need to regularly check the chain loosening degree of the scraper chain, so that the labor cost of enterprises is reduced, and the labor intensity of workers is reduced.
3) After the broken scraper chain, the producer and the consumer of the scraper conveyor can have relevant data evidence for supporting without great technical disputes.
4) The supporting and guiding device can play a supporting role and a guiding role for the bent scraper chain, and the guiding device can automatically reset after the chain is tensioned without manual reset, so that the requirements of clients can be better met, and the clients can be better served.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic view of the state inside the head during normal operation.
Fig. 2 is a schematic view of the outside of the head during normal operation.
Fig. 3 is a schematic view of the inside of the head when the chain is run too loose.
Fig. 4 is a schematic view of the outside of the head when the chain is in an over-loose operation.
Fig. 5 is a schematic view of the external structure of the present utility model.
Fig. 6 is a cross-sectional view at a in fig. 5.
Fig. 7 is a cross-sectional view at B in fig. 6.
Fig. 8 is a front view of the support guide of the present utility model.
Fig. 9 is a top view of the support guide of the present utility model.
Fig. 10 is a front view of a swivel arm of the present utility model.
Fig. 11 is a top view of a swivel arm of the present utility model.
Fig. 12 is a top view of the present utility model in a single row chain flight conveyor.
Fig. 13 is a top view of the present utility model in a duplex link flight conveyor.
In the figure: the device comprises a head casing side plate 1, a heavy weight piece 2, a flexible traction piece 3, a rotating arm 4, a first flat key 5, a proximity switch 6, a switch support 7, a cable 8, a DCS central control system 9, a working hole 10, a support guiding device 11, a second horizontal working plate 12, a vertical working plate 13, a working shaft 14, a bearing seat mounting plate 15, a sealing gasket 16, UCFU (unified use unit) with a seat bearing 17, a first bolt assembly 18, a second limiting rod 19, a first limiting rod 20, a shaft end baffle 21, a second bolt assembly 22, a return scraper chain link 23, a head pulley 24, a riding wheel 25, a scraper chain central line 26, a first working arm 401, a rotating seat 402, a second working arm 403 and an induction block 404.
Detailed Description
As shown in fig. 5-7, a real-time monitoring device for loose chain of a scraper chain comprises a working shaft 14 which is arranged between a head wheel 24 and a riding wheel 25 and is positioned below a return scraper chain rod 23, and a supporting and guiding device 11 is arranged on the working shaft 14 and is positioned in a proper position in a head machine shell. The support guiding device 11 comprises a horizontal working plate 12, one end of the horizontal working plate 12 is in smooth transition connection with an arc-shaped part, the lower end of the horizontal working plate 12 is fixedly provided with a vertical working plate 13, and the vertical working plate 13 is fixedly connected with a working shaft 14. After the loose chain is pressed down, the loose chain can be supported by the supporting guide device 11, and the supporting guide device 11 can rotate around the center line of the working shaft 14. A second limiting rod 19 is fixed below the outer end of the horizontal working plate 12, and the second limiting rod 19 prevents the supporting and guiding device 11 from rotating downwards all the time when the chain loosening phenomenon occurs. And simultaneously, the supporting and guiding device 11 is not rotated when being inclined to a certain angle, so that the loose chain scraper chain can be supported and guided.
As shown in fig. 10-11, a rotating arm 4 is arranged at the end of the working shaft 14, which is positioned outside the head casing, the rotating arm 4 comprises a rotating seat 402 installed on the working shaft 14, a first working arm 401 is fixed on one side of the rotating seat 402, a second working arm 403 is fixed on the other side of the rotating seat, and the first working arm 401 and the second working arm 403 are arranged at a certain angle. Wherein, first work arm 401 is connected with weight 2 through the lifting rope, and second work arm 403 terminal lower part is fixed with sensing block 404, and proximity switch 6 is installed to the position under the sensing block 404, and proximity switch 6 is connected with DCS central control system 9 through the cable.
The first stop lever 20 is disposed above the second working arm 403, and the weight component and the first stop lever 20 are cooperatively controlled, so that the supporting and guiding device 11 can maintain a static balance state in a normal working state of the scraper chain, and the supporting and guiding device 11 maintains a horizontal direction in the static balance state.
As shown in fig. 12 to 13, when the apparatus is a single-row chain scraper conveyor, one supporting guide 11 is provided, and when the apparatus is a double-row chain scraper conveyor, two supporting guides 11 are provided. The supporting and guiding device 11 is located right below the return link chain 23, and can support the return link chain 23 in the later stage.
The assembly process comprises the following steps:
the working holes 10 are formed on two sides of the head casing side plate 1, and then the bearing seat mounting plates 15 are fixed on two sides of the head casing side plate 1. The working shaft 14 is then vertically passed through the head housing side plate 1 through the working hole 10. The supporting and guiding device 11 is installed inside the head shell side plate 1 through the working shaft 14 and is positioned right below the return scraper chain link 23, and the supporting and guiding device 11 is connected with the middle of the working shaft 14 by using a second flat key and is fixed through a first nut. And then the UCFU bearing with a seat 17 passes through the working shaft 14 and is arranged on the bearing seat mounting plate 15 and is fixed by a first bolt assembly 18, a sealing gasket 16 is arranged between the UCFU bearing with a seat 17 and the bearing seat mounting plate 15, and sealing glue is required to be smeared on two sides of the sealing gasket 16. And a second limiting rod 19 is arranged at the lower part of the supporting and guiding device 11, and two ends of the second limiting rod 19 are fixed with the head shell side plate 1. Then, a rotary arm 4 is installed at one end part of the working shaft 14, a first flat key 5 is arranged between the rotary arm 4 and the working shaft 14, a shaft end baffle 21 is installed on the outer side of the rotary arm 4, and the rotary arm 4, the shaft end baffle 21 and the working shaft 14 are fixed through a second bolt assembly 22. Weight 2 is mounted on the lower portion of the first working arm 401, and the weight 2 is connected with the first working arm 401 by flexible traction member 3. A first stopper rod 20 is provided on the upper portion of the second working arm 403, and one end of the first stopper rod 20 is fixed to the head casing side plate 1. A proximity switch 6 is arranged at the lower part of the sensing block 404, the proximity switch 6 is arranged on a switch support 7, and one end of the switch support 7 is fixed with the head shell side plate 1. And finally, the proximity switch 6 is connected with the DCS central control system 9 in a direction by a cable 8, so that a signal monitored by the proximity switch 6 can be transmitted to the DCS central control system 9.
Working principle:
when the scraper chain works normally, the chain loosening serious phenomenon does not occur. At this time, the scraper chain is in a straight line or slightly bent state when bypassing the head pulley and the riding wheel, and a certain distance is reserved between the scraper chain and the horizontal working plate 12 of the supporting and guiding device 11, and the scraper chain is not contacted; the first arm 401 of the rotating arm 4 has a downward rotation tendency due to the gravity of the weight 2, and the second arm 403 has an upward rotation tendency, but is limited by the first limiting rod 20 and cannot rotate, so that the whole loose chain monitoring device maintains a static balance state. At this time, the sensing block 404 under the second working arm 403 is at the upper position of the proximity switch 6, and does not reach the detection range of the proximity switch 6, and the proximity switch 6 cannot detect the signal source, so that the DCS central control system displays that the scraper chain is in a normal running state (i.e. the scraper chain does not have serious chain loosening phenomenon).
When the scraper chain works abnormally, the chain loosening serious phenomenon occurs. At this time, the blade chain is in a severely curved state when it bypasses the head pulley and the riding pulley, and the link lever of the blade chain is in contact with the horizontal work plate 12 supporting the guide 11. At this time, the supporting and guiding device 11 is affected by the gravity of the scraper chain, and the gravity of the scraper chain is greater than that of the weight piece 2 outside the head, and the supporting and guiding device 11 is rotated downward, and when the supporting and guiding device rotates to the second limiting rod 19, the supporting and guiding device is stopped due to the blocking of the second limiting rod 19. As the supporting and guiding device 11 rotates downwards, the first working arm 401 together with the weight 2 is driven to rotate upwards, and the second working arm 403 and the sensing block 404 rotate downwards. Since the sensing block 404 rotates to the detection range of the proximity switch 6, the proximity switch 6 detects the signal source at this time, so as to generate a pulse signal and transmit the pulse signal to the DCS central control system. The DCS central control system sends out an alarm signal after receiving the pulse signal, and the scraper chain displayed on the DCS central control system is in a seriously loose chain running state.
Claims (3)
1. A scraper chain loose chain real-time monitoring device is characterized in that: the device comprises a working shaft (14) which is arranged between a head wheel (24) and a riding wheel (25) and is positioned below a return scraper chain rod (23), wherein a supporting and guiding device (11) is fixed on the part, positioned in a head machine shell, of the working shaft (14), and a second limiting rod (19) is arranged below one side, deviating from the working shaft (14), of the supporting and guiding device (11); the part of the working shaft (14) positioned outside the head casing is provided with a rotating arm (4), one side of the rotating arm (4) deviating from the axis is connected with the heavy hammer (2), and the upper end of the other side of the rotating arm (4) deviating from the axis is limited by a first limiting rod (20) and the lower part of the rotating arm is opposite to the proximity switch (6).
2. The device for monitoring chain loosening of a scraper chain in real time according to claim 1, wherein: the support guiding device (11) comprises a horizontal working plate (12), one end of the horizontal working plate (12) is connected with an arc-shaped part in a smooth transition mode, the lower end of the horizontal working plate (12) is fixedly provided with a vertical working plate (13), and the vertical working plate (13) is fixedly connected with a working shaft (14).
3. The device for monitoring chain loosening of a scraper chain in real time according to claim 1, wherein: the rotary arm (4) comprises a rotary seat (402) arranged on the working shaft (14), a first working arm (401) is fixed on one side of the rotary seat (402), a second working arm (403) is fixed on the other side of the rotary seat, and an induction block (404) is fixed at the lower end of the second working arm (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857781.7U CN220663914U (en) | 2023-07-14 | 2023-07-14 | Real-time monitoring device for loose chain of scraper chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857781.7U CN220663914U (en) | 2023-07-14 | 2023-07-14 | Real-time monitoring device for loose chain of scraper chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220663914U true CN220663914U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321857781.7U Active CN220663914U (en) | 2023-07-14 | 2023-07-14 | Real-time monitoring device for loose chain of scraper chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220663914U (en) |
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2023
- 2023-07-14 CN CN202321857781.7U patent/CN220663914U/en active Active
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