A deviation prevention system for a pulley
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA BAOFENG ENERGY GROUP CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, belt pulley misalignment leads to wear, coal spillage, and safety hazards, and mechanical detection devices suffer from low reliability and untimely response.
Infrared sensors are used to detect belt pulley misalignment and coal stacking. The belt pulley is stopped by control components, and dust removal equipment is used to reduce the impact of dust and improve detection accuracy.
It enables timely detection and protection against belt pulley misalignment and coal stacking, improving safety and reliability, and reducing equipment wear and safety hazards.
Smart Images
Figure CN224529804U_ABST
Abstract
Description
Technical Field
[0001] This application generally relates to the field of coal mining technology. More specifically, this application relates to an anti-deviation protection system for belt pulleys. Background Technology
[0002] In a coal mine production system, the extracted coal often needs to be transported to different workshops. For example, in the coal face, the underground coal mining machine cuts the coal and conveys it to the face conveyor. Further, this coal can be conveyed by belt conveyors to the panel coal bunker. Still further, the coal in the panel coal bunker can be conveyed by belt conveyors to the bottom coal bunker. After the coal in the bottom coal bunker is transported to the surface, it is transported to the crushing and screening workshop for screening. The resulting clean coal can be transported sequentially to the heavy media separator and the clean coal bunker, while the resulting gangue can be transported sequentially to the middlings bunker and the gangue bunker. Understandably, coal often relies on belt conveyors for transportation between these different workshops.
[0003] However, in coal transportation, belt misalignment can occur (i.e., the belt no longer runs in a straight line along the center line of the rollers and idlers during operation, but deviates to the left or right, or even slips off the edge of the rollers). When the belt misaligns, the edge of the belt rubs against the frame, generating a large amount of heat. This causes the belt to wear out quickly, even to the point of being worn through, rendering the belt unusable and resulting in economic losses. Furthermore, belt misalignment can cause coal to spill. This spilled coal may accumulate at the bottom of the belt, and on the return trip, it can be drawn into the rollers, potentially causing the roller's rubber coating to catch fire. Moreover, belt misalignment leads to uneven stress on the belt, which can cause it to tear longitudinally.
[0004] Therefore, there is an urgent need to provide a belt misalignment protection system for pulleys so that belt misalignment can be detected in a timely manner. Utility Model Content
[0005] In order to at least solve one or more of the technical problems mentioned above, this application proposes, in one aspect, an anti-deviation protection system for pulleys.
[0006] In a first aspect, this application provides an anti-deviation protection system for a pulley, the pulley including a pulley body and a pulley collection chamber, the output end of the pulley body being connected to the pulley collection chamber, the anti-deviation protection system including a first detection component, a second detection component, a control component, and an alarm component; wherein, the first detection component is disposed on one side of the pulley body in the width direction, the second detection component including a second infrared transmitter and a second infrared receiver, the second infrared transmitter and the second infrared receiver being respectively disposed at both ends of the pulley collection chamber; the control component is electrically connected to the first detection component and the second detection component, and is used to receive first detection information from the first detection component and second detection information from the second detection component; the alarm component is electrically connected to the control component, and is used to issue alarm information.
[0007] In some embodiments, the first detection component includes a first infrared emitter and a first infrared receiver, the first infrared emitter and the first infrared receiver being disposed on the same side of the pulley body in the width direction.
[0008] In some embodiments, the pulley body has a first side and a second side opposite to the first side in the width direction, the first infrared transmitter and the first infrared receiver are disposed on the first side of the pulley body, and the anti-deviation protection system further includes a third detection component, the third detection component including a third infrared transmitter and a third infrared receiver, the third infrared transmitter and the third infrared receiver being disposed on the second side of the pulley body.
[0009] In some embodiments, the anti-deviation protection system further includes a dust removal device disposed on the first detection component to reduce the impact of dust on the first detection component.
[0010] In some embodiments, the dust removal equipment includes compressed air purging nozzles.
[0011] In some embodiments, the second detection component includes a second mounting component, wherein the second mounting component includes a second transmitter rod and a second receiver rod, the second transmitter rod is provided with the second infrared transmitter, and the second receiver rod is provided with the second infrared receiver, wherein the second transmitter rod and the second receiver rod are telescopic rods for adjusting the height of the second infrared transmitter and the second infrared receiver.
[0012] In some embodiments, the first detection component includes either a through-beam infrared sensor or a reflector infrared sensor.
[0013] With the pulley anti-deviation protection system provided above, the solution of this application can detect belt deviation of the pulley in a timely manner. Attached Figure Description
[0014] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein: Figure 1 An exemplary block diagram of an anti-deviation protection system for a pulley, according to some embodiments of this application, is shown; Figure 2 An exemplary structural diagram of an anti-deviation protection system for a pulley, according to other embodiments of this application, is shown. Detailed Implementation
[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0016] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0017] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.
[0018] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."
[0019] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0020] Exemplary application scenarios.
[0021] In related technologies, pulley misalignment protection devices often employ a mechanical contact method. Specifically, this device may include a vertical roller and a locking rod. The vertical roller can be positioned on both sides of the pulley, and a safe distance (e.g., 30-50mm) can be maintained between the roller and the edge of the pulley. Furthermore, the vertical roller can be configured to rotate around its axis, and its bottom can be rigidly connected to the locking rod via a connecting component (e.g., a cam or connecting rod). The locking rod can also be configured as a lever or crank arm, with one end connected to the vertical roller and the other end connected to a limit switch roller, which in turn connects to the switch in the pulley control circuit.
[0022] When the pulley is not misaligned, the vertical roller remains stationary. In this state, the normally closed contact of the switch is closed, energizing the control circuit and allowing it to maintain its operational state. When the pulley misaligns, the following mechanical transmission occurs: the edge of the belt touches the vertical roller, causing it to rotate, which in turn drives the locking rod to swing, thus moving the switch roller. Through this mechanical transmission, the normally closed contact of the switch opens, cutting off the control circuit and stopping the pulley from operating.
[0023] However, it is understandable that the aforementioned mechanical components, the vertical roller and locking rod, are prone to failure. Furthermore, when the pulley operates at high speed, if a failure occurs, the mechanical transmission takes time, which may result in delayed alarms and failure to stop the pulley, leading to safety hazards such as insensitive protection and low reliability. In addition, related technologies can detect excessive coal pile height at the conveyor output using resistive contact methods; however, this requires the coal pile height to reach a preset height before triggering an alarm. If the coal pile height is less than the preset height, the alarm will not be triggered. Since the preset height cannot be adjusted in a timely manner, even when the coal pile height is less than the preset height, safety hazards may still arise due to coal accumulation.
[0024] Figure 1An exemplary block diagram of an anti-deviation protection system for a pulley, according to some embodiments of this application, is shown. Figure 2 An exemplary structural diagram of an anti-deviation protection system for a pulley, according to other embodiments of this application, is shown. Figure 1 and Figure 2 As shown, the pulley includes a pulley body and a pulley collection chamber. The output end of the pulley body is connected to the pulley collection chamber. The anti-deviation protection system includes a first detection component, a second detection component, a control component, and an alarm component. The first detection component is located on one side of the pulley body in the width direction. The second detection component includes a second infrared transmitter and a second infrared receiver, which are respectively located at both ends of the pulley collection chamber. The control component is electrically connected to the first and second detection components and is used to receive first detection information from the first detection component and second detection information from the second detection component. The alarm component is electrically connected to the control component and is used to issue an alarm message.
[0025] In some embodiments, the first detection component includes either a through-beam infrared sensor or a reflector infrared sensor.
[0026] In some embodiments, the pulley body may include an input end and an output end, the output end of which may be connected to a pulley collection bin. Coal to be transported can enter the pulley body through the input end, and after being transported by the pulley body, it can be transferred to the pulley collection bin through the output end of the pulley, and then transferred to other plants or workshops.
[0027] In some embodiments, the first detection component may include an infrared detection component, which may be a through-beam infrared sensor or a reflective infrared sensor.
[0028] When the infrared detection component is a reflective infrared sensor, it may include an integrated infrared receiver / transmitter sensor and a reflective marker. The integrated infrared receiver / transmitter sensor may be located on the side of the sensor, and the reflective marker may be located on the edge of the pulley body. When the pulley is running normally, the infrared light emitted by the integrated infrared receiver / transmitter sensor can illuminate the reflective marker and be reflected back, thus being received by the integrated infrared receiver / transmitter sensor. When the pulley deviates from its normal position, the infrared light emitted by the integrated infrared receiver / transmitter sensor is at least partially blocked by the pulley and / or the items transported on the pulley. Only part of the infrared light can illuminate the reflective marker and be reflected back. At this time, the signal strength of the infrared light received by the integrated infrared receiver / transmitter sensor decreases, thereby triggering protection.
[0029] When the infrared detection component is a through-beam infrared sensor, it may include a first infrared transmitter and a first infrared receiver, which may be disposed on the side of the pulley and on the same side. Specifically, in the width direction of the pulley body, the aforementioned side of the pulley body may include a first side and a second side, and the first infrared transmitter and the first infrared receiver may both be disposed on the first side or both on the second side.
[0030] When the pulley is running normally, the infrared light emitted by the aforementioned first infrared transmitter can illuminate the first infrared receiver. When the pulley deviates, the infrared light emitted by the aforementioned first infrared transmitter is at least partially blocked by the pulley and / or the items transported on the pulley, and only part of the infrared light can illuminate the first infrared receiver. At this time, the signal strength of the infrared light received by the first infrared receiver decreases, thereby triggering the protection.
[0031] In some embodiments, the aforementioned second detection component may also be a through-beam type, comprising a second infrared transmitter and a second infrared receiver, which may be positioned at opposite ends of the pulley collection bin. When the pulley collection bins are not stacked, the infrared radiation emitted by the second infrared transmitter can be transmitted to the second infrared receiver. When the pulley collection bins are stacked, the infrared radiation emitted by the second infrared transmitter is at least partially blocked by the coal stack, reducing the signal strength of the infrared radiation that can be transmitted to the second infrared receiver, thereby triggering protection.
[0032] In some embodiments, the second detection component may be configured to be height-adjustable, which can be adjusted according to the coal pile conditions, thereby enabling coal pile protection at different heights.
[0033] It is understandable that both the first and second detection components mentioned above can be infrared sensors. The infrared rays emitted by the aforementioned infrared sensors are highly directional, have a fast response speed, and can detect minute displacements at the edge of the belt. When the dust concentration is low, they will not be affected by dust in the air.
[0034] In some embodiments, the control unit may be electrically connected to the first detection unit, the second detection unit, and the alarm unit, respectively. It is understood that when the first detection unit detects a decrease in the infrared light signal intensity, it can transmit deviation information to the control unit. Upon receiving this deviation information, the control unit can trigger the alarm unit to issue an alarm message, which may include an audible warning and / or a visual warning. Similarly, when the second detection unit detects a decrease in the infrared light signal intensity, it can also transmit stacking information to the control unit. Upon receiving this stacking information, the control unit can trigger the alarm unit to issue an alarm message.
[0035] In some embodiments, the control component may also be connected to the control switch of the control circuit of the pulley. When the control component receives information about belt misalignment and / or stacking, it can control the control switch of the control circuit of the pulley to disconnect, so that the pulley stops working in time, thereby reducing the damage caused by belt misalignment or coal stacking.
[0036] According to the solution of this application, when the pulley body shifts, the first detection component can detect the shift in a timely manner. Compared with detection by mechanical devices (such as vertical rollers and locking rods), it has a faster response speed, thus enabling timely detection of pulley body shift. Furthermore, the second detection component can also detect the stacking of pulley collection bins. The control component can control the switch of the pulley control circuit. When pulley shift or stacking is detected, the control component can disconnect the switch, thereby protecting the pulley.
[0037] In some embodiments, the first detection component includes a first infrared emitter and a first infrared receiver, the first infrared emitter and the first infrared receiver being disposed on the same side of the pulley body in the width direction.
[0038] In some embodiments, the pulley body has a first side and a second side opposite to the first side in the width direction, the first infrared transmitter and the first infrared receiver are disposed on the first side of the pulley body, and the anti-deviation protection system further includes a third detection component, the third detection component including a third infrared transmitter and a third infrared receiver, the third infrared transmitter and the third infrared receiver being disposed on the second side of the pulley body.
[0039] In some embodiments, the first detection component may be a through-beam infrared sensor, which may include a first infrared transmitter and a first infrared receiver.
[0040] In some embodiments, the pulley body may have a first side and a second side opposite to the first side in the width direction. In some embodiments, a first infrared transmitter and a first infrared receiver may be disposed on a first side of the pulley body, wherein the first infrared transmitter may be disposed in a region near the input end of the pulley body, and the first infrared receiver may be disposed in a region near the output end of the pulley body.
[0041] In some embodiments, a third infrared transmitter and a third infrared receiver may be disposed on a second side of the pulley body, wherein the third infrared transmitter may be disposed in a region near the input end of the pulley body, and the third infrared receiver may be disposed in a region near the output end of the pulley body.
[0042] According to the solution of this application, when the pulley body shifts, the first detection component can detect the shift in a timely manner. Compared with detection by mechanical devices (such as vertical rollers and locking rods), it has a faster response speed, thus enabling timely detection of pulley body shift. Furthermore, the second detection component can also detect the stacking of pulley collection bins.
[0043] In some embodiments, the anti-deviation protection system further includes a dust removal device disposed on the first detection component to reduce the impact of dust on the first detection component. In some embodiments, the dust removal device includes a compressed air purging nozzle.
[0044] In some embodiments, the aforementioned dust removal device may include compressed air purging nozzles, which may be disposed on the sensor lenses of the first infrared transmitter and the first infrared receiver. Furthermore, the aforementioned dust removal device may also be disposed on the sensor lenses of the second infrared transmitter, the second infrared receiver, the third infrared transmitter, and / or the third infrared receiver, which can spray air to prevent dust from entering the sensor lenses.
[0045] By installing dust removal equipment, the impact of dust generated by the belt pulley during coal transport on the first detection component can be reduced, thereby improving the accuracy of detection.
[0046] In some embodiments, the second detection component includes a second mounting component, wherein the second mounting component includes a second transmitter rod and a second receiver rod, the second transmitter rod is provided with the second infrared transmitter, and the second receiver rod is provided with the second infrared receiver, wherein the second transmitter rod and the second receiver rod are telescopic rods for adjusting the height of the second infrared transmitter and the second infrared receiver.
[0047] In some embodiments, the second detection component includes a second mounting component, wherein the second mounting component includes a second transmitter rod and a second receiver rod.
[0048] In some embodiments, the second transmitter rod and the second receiver rod may be respectively disposed at the edge of the pulley collection chamber, and the second transmitter rod and the second receiver rod may be respectively disposed at both ends of the pulley collection chamber.
[0049] In some embodiments, the aforementioned second transmitter rod can be configured as a telescopic rod, and the second receiver rod can also be configured as a telescopic rod.
[0050] Specifically, the aforementioned second transmitter rod and second receiver rod can be configured as a multi-stage (e.g., a two-stage or three-stage piston rod) hydraulic cylinder sleeve type. The second infrared transmitter and the second infrared receiver can be respectively mounted on the piston rod, and thus can move with the piston rod to adjust the height.
[0051] In some embodiments, the second transmitter rod and the second receiver rod can be a rack and pinion telescopic mechanism, and the second infrared transmitter and the second infrared receiver can be respectively mounted on the rack so that they can follow the piston rod to adjust the height.
[0052] By setting the second transmitter rod and the second receiver rod as telescopic rods, the height of the second detection component can be adjusted, thereby setting different heights as the detection height for coal pile detection. When the coal is higher than the detection height, the signal strength of the infrared rays received by the second infrared receiver weakens, thereby triggering an alarm and controlling the pulley to stop the machine.
[0053] In summary, the solution proposed in this application allows the first detection component to promptly detect pulley misalignment. Compared to detection via mechanical devices (such as vertical rollers and locking rods), it offers a faster response time, enabling timely detection of pulley misalignment. Furthermore, the second detection component can also detect pulley stacking. The control component controls the switch of the pulley's control circuit; when pulley misalignment or stacking is detected, the control component disconnects the switch, thus protecting the pulley.
[0054] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.
Claims
1. A system for preventing belt deviation in a pulley, the pulley comprising a pulley body and a pulley collection chamber, wherein the output end of the pulley body is connected to the pulley collection chamber, characterized in that, The anti-deviation protection system includes a first detection component, a second detection component, a control component, and an alarm component; wherein, The first detection component is disposed on one side of the pulley body in the width direction. The second detection component includes a second infrared transmitter and a second infrared receiver, which are respectively disposed at both ends of the pulley collection chamber; The control component is electrically connected to the first detection component and the second detection component, and is used to receive the first detection information from the first detection component and the second detection information from the second detection component. The alarm component is electrically connected to the control component and is used to issue alarm information.
2. The anti-deviation protection system according to claim 1, characterized in that, The first detection component includes a first infrared emitter and a first infrared receiver, which are disposed on the same side of the pulley body in the width direction.
3. The anti-deviation protection system according to claim 2, characterized in that, The pulley body has a first side and a second side opposite to the first side in the width direction. The first infrared transmitter and the first infrared receiver are disposed on the first side of the pulley body. The anti-deviation protection system further includes a third detection component, which includes a third infrared transmitter and a third infrared receiver, and the third infrared transmitter and the third infrared receiver are disposed on the second side of the pulley body.
4. The anti-deviation protection system according to claim 1, characterized in that, The anti-deviation protection system also includes a dust removal device, which is installed on the first detection component to reduce the impact of dust on the first detection component.
5. The anti-deviation protection system according to claim 4, characterized in that, The dust removal equipment includes compressed air purging nozzles.
6. The anti-deviation protection system according to claim 1, characterized in that, The second detection component includes a second mounting component, wherein the second mounting component includes a second transmitter rod and a second receiver rod, the second transmitter rod is provided with a second infrared transmitter, and the second receiver rod is provided with a second infrared receiver, wherein the second transmitter rod and the second receiver rod are telescopic rods for adjusting the height of the second infrared transmitter and the second infrared receiver.
7. The anti-deviation protection system according to any one of claims 1-6, characterized in that, The first detection component includes either a through-beam infrared sensor or a reflector infrared sensor.