A device for preventing belt misalignment to overcome uneven material distribution at the tail end of a belt conveyor

Abstract

This invention provides an anti-deviation device to overcome uneven material receiving at the tail of a belt conveyor, comprising: a mounting frame; rollers, wherein several rollers are mounted parallel to each other on the mounting frame for contacting and adjusting the position of the conveyor belt, wherein the rolling direction of the rollers is perpendicular to the transmission direction of the conveyor belt; a driving device for driving the rollers to rotate clockwise or counterclockwise in the same direction; two sensors, respectively installed on the left and right sides of the conveyor belt, for sensing the position of the conveyor belt; and a control system for receiving information from the two sensors and controlling the driving device to run or stop. This device can quickly correct the deviation of the conveyor belt at impact points, preventing abnormal damage to the main components of the belt conveyor due to deviation, avoiding system malfunctions and downtime affecting production efficiency, and preventing safety hazards such as lateral tearing caused by conveyor belt overturning.

Description

Technical Field

[0001] This invention relates to an anti-deviation device for overcoming uneven material receiving at the tail end of a belt conveyor. Background Technology

[0002] Belt conveyors are a type of underground conveying machinery in mines. With the increasing mechanization of mining and the accelerated progress of the working face, the quality of transportation equipment is a crucial factor. Belt conveyors have advantages such as long conveying distance, large conveying capacity, low working resistance, easy installation, low power consumption, and low wear. However, in some harsh working conditions and with limited space, the chute cannot provide material accumulation and buffering, and side discharge is required. If both the left and right discharge ports at the top discharge simultaneously, the belt will not deviate. However, if only one discharge port at the top is open, the material discharge will impact one side of the belt, causing it to deviate. This can easily lead to: abnormal damage to major components of the equipment, system malfunctions causing shutdowns and affecting production efficiency, or, due to severe belt deviation, material rolling on the belt, causing the force on one side of the belt to exceed the longitudinal breaking force, resulting in transverse tearing of the belt and other safety hazards.

[0003] Existing belt conveyor correction devices that use limit designs are prone to belt tearing, while other adjustment methods are for the entire belt and require a long time to achieve the correction effect. They cannot promptly adjust for belt deviation caused by a large amount of material impacting a section of the belt in a short period of time. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects and provide an anti-deviation device to overcome uneven material receiving at the tail of a belt conveyor.

[0005] The present invention adopts the following technical solution:

[0006] An anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor includes: a mounting frame; rollers, wherein several rollers are mounted parallel to each other on the mounting frame for contacting the conveyor belt and adjusting its position, wherein the rolling direction of the rollers is perpendicular to the conveying direction of the conveyor belt; a driving device for driving the rollers to rotate clockwise or counterclockwise in the same direction; two sensors, respectively mounted on the left and right sides of the conveyor belt, for sensing the position of the conveyor belt; and a control system for receiving information from the two sensors and controlling the driving device to start or stop.

[0007] Preferably, the mounting frame includes a bracket, a first idler frame, a second idler frame, and a third idler frame, wherein the third idler frame is located between the first idler frame and the second idler frame; a plurality of rollers are mounted on the first idler frame, the second idler frame, and the third idler frame; the third idler frame is fixedly mounted above the bracket; the third idler frame has a first connecting frame and a second connecting frame at both ends; a first support device is used to hinge one end of the bracket to the first idler frame, and the other end of the first idler frame is hinged to the first connecting frame; a second support device is used to hinge one end of the bracket to the second idler frame, and the other end of the second idler frame is hinged to the second connecting frame.

[0008] Preferably, both the first support device and the second support device are hydraulic cylinders; when the first support device and the second support device are lifted, the first roller frame, the second roller frame and the third roller frame form a groove-shaped structure that is low in the middle and high at both ends.

[0009] Preferably, the driving device includes a geared motor and a belt transmission structure, wherein the belt transmission structure includes: a pulley seat, a plurality of belts, and a tension pulley; a plurality of rollers are mounted in parallel on a plurality of pulley seats; a plurality of pulley seats are mounted on a first idler frame, a second idler frame, and a third idler frame; the tension pulley is used to adjust the belt mounted on the third idler frame; the geared motor is connected to drive the belt transmission structure, driving the plurality of rollers to rotate in the same direction.

[0010] Preferably, the leftmost mounting position of the first idler frame for mounting the pulley seat is a long groove structure, so that the pulley seat can be adjusted to be installed in the long groove to adjust the tension of the belt installed on the first idler; the rightmost mounting position of the second idler frame for mounting the pulley seat is a long groove structure, so that the pulley seat can be adjusted to be installed in the long groove to adjust the tension of the belt installed on the second idler.

[0011] Preferably, the two sensors are respectively installed on the left side of the first idler frame and the right side of the second idler frame.

[0012] Preferably, the sensor is a distance sensor or a contact sensor.

[0013] Preferably, the control system is a PLC control system.

[0014] The beneficial effects of this invention are as follows: the hydraulic cylinder can be raised or lowered according to the needs of on-site work; when only one material inlet is open, the hydraulic cylinder is raised so that the roller and the belt work in close contact, and the belt can be quickly corrected in the event of belt deviation in the impact section; it avoids abnormal damage to the main components of the belt conveyor caused by deviation; it avoids system failure and downtime affecting production efficiency; and it avoids safety hazards such as belt overturning causing lateral tearing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is a front view of the present invention with a transport belt.

[0017] Figure 3 This is a top view of the first idler frame of the present invention.

[0018] Figure 4 This is a top view of the second idler frame of the present invention. Detailed Implementation

[0019] To make the objectives and technical solutions of this invention clearer, the invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0020] like Figures 1-2 The device shown is an anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor, comprising: a mounting frame; the mounting frame includes a support 1, a first idler frame 21, a second idler frame 22, and a third idler frame 23, wherein the third idler frame 23 is located between the first idler frame 21 and the second idler frame 22; the third idler frame 23 is fixedly mounted above the support 1; the third idler frame 23 has two first connecting frames 231 and two second connecting frames 232 at its two ends respectively; a first support device 31 is used to hinge one end of the support 1 to the first idler frame 21, and the other end of the first idler frame 21 is hinged to the two first connecting frames 231 on both sides; a second support device 32 is used to hinge one end of the support 1 to the second idler frame 22, and the other end of the second idler frame 22 is hinged to the two second connecting frames 232 on both sides. The hinge can be made directly by the above components or by the bracket, which is a conventional connection method, and will not be described in detail in this invention.

[0021] Several rollers 4 are installed in parallel on the first idler frame 21, the second idler frame 22, and the third idler frame 23; they are used to contact the conveyor belt 5 of the conveyor and adjust the position of the conveyor belt 5. The rolling direction of the rollers 4 is perpendicular to the conveying direction of the conveyor belt 5. This arrangement allows the rollers 4 to quickly return the belt to its original position when the conveyor belt 5 is deflected to one side due to the impact of the material.

[0022] The driving device includes a geared motor 6 (or a motor-connected transmission box structure) and a belt transmission structure. The belt transmission structure includes a pulley seat 71, several belts, and a tension pulley 72. The pulley seats 72 are distributed on a first idler frame 21, a second idler frame 22, and a third idler frame 23. Several rollers 4 are installed in parallel on the pulley seats 71. The tension pulley 72 is used to adjust the belts installed on the third idler frame 23. The geared motor 6 is connected to drive the belt transmission structure, driving the rollers 4 to rotate clockwise or counterclockwise in the same direction. In this embodiment, the first idler frame 21 has two rollers, the second idler frame 22 has two rollers, and the third idler frame 23 has three rollers.

[0023] Two sensors 8 are provided, which are respectively installed on the left and right sides of the transmission belt 5. They can be installed on the left side of the first idler frame 21 and the right side of the second idler frame 22 to sense the position of the belt 5. The control system (not shown in the figure) receives information from the two sensors 8 and controls the drive device to run or stop. The sensors 8 are distance sensors or contact sensors. The control system is a PLC control system.

[0024] Preferably, the first support device 31 and the second support device 32 are both hydraulic cylinders; when the first support device 31 and the second support device 32 are lifted, the first roller frame 21, the second roller frame 22 and the third roller frame 23 form a groove-shaped structure that is low in the middle and high at both ends.

[0025] Preferred, such as Figure 3 , Figure 4 As shown, the leftmost mounting position of the first idler frame 21 for mounting the pulley seat is a long groove structure, which allows the pulley seat to be adjusted in the long groove to adjust the belt tension of the first idler; the rightmost mounting position of the second idler frame 22 for mounting the pulley seat is a long groove structure, which allows the pulley seat to be adjusted in the long groove to adjust the belt tension of the second idler.

[0026] The method of using this invention is as follows:

[0027] When performing on-site work, if the material is falling from the upper left and right drop ports at the same time, there is no need to raise the left and right hydraulic cylinders.

[0028] When working on site, if only one of the two material drop ports on the left and right is dropping material, the left and right hydraulic cylinders are raised, so that the first roller frame, the second roller frame, and the third roller frame form a trough-shaped structure that is low in the middle and high at both ends.

[0029] When the material is fed from the left discharge port alone, the material will exert a rightward impact force on the conveyor belt, causing the conveyor belt to deviate to the right. When the deviation reaches a preset distance (when the right-side distance sensor detects the belt, or when the belt touches the contact sensor; in this embodiment, a distance sensor is used to avoid collision between the sensor and the conveyor belt), the sensor sends a signal to the control system. The control system controls the geared motor to rotate, causing the roller to rotate and driving the conveyor belt to move in the opposite direction of the deviation (to the left). The geared motor stops working within a preset time to achieve the purpose of correction.

[0030] When the material is fed from the right discharge port alone during on-site operation, the material will exert a leftward impact force on the conveyor belt, causing the conveyor belt to deviate to the left. When the deviation reaches a preset distance (when the distance sensor detects the belt), the left sensor sends a signal to the control system. The control system controls the geared motor to rotate in the opposite direction, causing the roller to rotate in the opposite direction, driving the conveyor belt to move in the opposite direction of the deviation (to the right). The geared motor stops working within a preset time to achieve the purpose of correction.

[0031] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The components used in this invention are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0034] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for preventing belt misalignment to overcome uneven material receiving at the tail end of a belt conveyor, characterized in that, include: Mounting rack; A plurality of rollers are mounted in parallel on the mounting frame for contacting the conveyor belt of the conveyor and adjusting the position of the conveyor belt, wherein the rolling direction of the rollers is perpendicular to the conveying direction of the conveyor belt; A driving device is used to drive the rollers to rotate clockwise or counterclockwise in the same direction; Two sensors are installed on the left and right sides of the conveyor belt to sense the position of the conveyor belt. The control system receives information from the two sensors and controls the drive device to operate or stop operating. The mounting frame includes a bracket, a first idler frame, a second idler frame, and a third idler frame, wherein the third idler frame is located between the first idler frame and the second idler frame; Several rollers are mounted on the first idler frame, the second idler frame, and the third idler frame; The third idler roller frame is installed and fixed above the bracket; The third idler frame is provided with a first connecting frame and a second connecting frame at both ends; A first support device is used to hinge the bracket to one end of the first idler frame, and the other end of the first idler frame is hinged to the first connecting frame. The second support device is used to hinge the bracket to one end of the second roller frame, and the other end of the second roller frame is hinged to the second connecting frame.

2. The anti-deviation device for overcoming uneven material receiving at the tail end of a belt conveyor according to claim 1, characterized in that: Both the first support device and the second support device are hydraulic cylinders; When the first support device and the second support device are lifted, the first roller frame, the second roller frame and the third roller frame form a trough-shaped structure that is low in the middle and high at both ends.

3. The anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor according to claim 1, characterized in that: The drive device includes a geared motor and a belt transmission structure, wherein the belt transmission structure includes: a pulley seat, several belts, and a tensioner. Several rollers are mounted in parallel on several pulley seats; Several of the aforementioned pulley seats are mounted on the first idler frame, the second idler frame, and the third idler frame; The tensioning wheel is used to adjust the belt mounted on the third idler frame; The geared motor is connected to the drive belt transmission structure, which drives several rollers to rotate in the same direction.

4. The anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor according to claim 3, characterized in that: The leftmost mounting position of the first idler roller frame for mounting the pulley seat is a long groove structure, which allows the pulley seat to be adjusted in the long groove to adjust the tension of the belt mounted on the first idler roller. The rightmost mounting position of the second idler frame, used for mounting the pulley seat, is a long groove structure, which allows the pulley seat to be adjusted in the long groove to adjust the tension of the belt installed on the second idler.

5. A device for preventing uneven material distribution at the tail end of a belt conveyor according to any one of claims 1-4, characterized in that: The two sensors are respectively installed on the left side of the first idler frame and the right side of the second idler frame.

6. The anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor according to claim 5, characterized in that: The sensor is a distance sensor or a contact sensor.

7. The anti-deviation device for overcoming uneven material receiving at the tail of a belt conveyor according to claim 1, characterized in that: The control system is a PLC control system.

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