A belt conveyor deviation adjusting device

Abstract

The present invention discloses an offset adjustment device for a belt conveyor. The offset adjustment device includes a clamping assembly that fixedly clamps the belt; a driving assembly that is drivingly connected to the clamping assembly to drive the clamping assembly to move to a preset position; an explosion-proof magnetic switch transmitting end fixing frame, with stoppers provided on both sides thereof, one end of one of the stoppers being located beside one end of the belt, and one end of the other stopper being located beside the other end of the belt; an explosion-proof magnetic switch transmitting end, which has at least 3, and each explosion-proof magnetic switch transmitting end is arranged on the explosion-proof magnetic switch transmitting end fixing frame and is spaced apart by a predetermined offset distance; an explosion-proof magnetic switch receiving end, which is correspondingly arranged with the explosion-proof magnetic switch transmitting end and is used to receive signals sent by different explosion-proof magnetic switch transmitting ends. The present invention can correct and adjust the offset belt without stopping the machine, and even when in the state of conveying materials, it can always ensure the normal operation of the belt.

Description

Technical Field

[0001] The present invention relates to the field of material conveyors, and more particularly to an offset adjustment device for a belt conveyor. Background Art

[0002] The existing protective facilities for belt conveyors are mostly physical protection. Most physical protections are not convenient for the daily maintenance and line cleaning of belt conveyors. Especially for the anti-deviation equipment, when the belt deviates during the transportation process of the belt conveyor, the most commonly used method for handling it nowadays is to stop the machine for deviation adjustment. The work of stopping the machine for deviation adjustment is heavy, which affects production. The monitoring system is not visual, and accurate response measures cannot be taken immediately after the alarm, resulting in poor early warning effects. Even for deviation early warning, it is still necessary to stop the machine for deviation adjustment. Most sensors are point detections, and the detection accuracy is highly limited by the installation position. The sensor failure rate is high, the monitoring result credibility is low, and the accident prevention effect is poor. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art solutions, the present invention provides an offset adjustment device for a belt conveyor.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] An offset adjustment device for a belt conveyor, the offset adjustment device includes a clamping assembly that fixedly clamps the belt; a driving assembly that is drivingly connected to the clamping assembly to drive the clamping assembly to move to a preset position; a fixed bracket for the transmitting end of an explosion-proof magnetic switch, with stoppers provided on both sides of the fixed bracket for the transmitting end of the explosion-proof magnetic switch. One end of one of the stoppers is located beside one end of the belt, and one end of the other stopper is located beside the other end of the belt; an explosion-proof magnetic switch transmitting end, with at least 3 explosion-proof magnetic switch transmitting ends, each explosion-proof magnetic switch transmitting end is arranged on the fixed bracket for the transmitting end of the explosion-proof magnetic switch and spaced apart by a predetermined offset distance; an explosion-proof magnetic switch receiving end, which is correspondingly arranged with the explosion-proof magnetic switch transmitting end for receiving signals sent by different explosion-proof magnetic switch transmitting ends.

[0006] As a preferred technical solution of the present invention, the clamping assembly includes: a roller frame, the driving shaft of the driving assembly is connected to the roller frame; a conical roller, the conical roller is fixedly arranged in the roller frame, and the conical roller is internally provided with a groove to clamp the belt and realize reverse pushing.

[0007] As a preferred technical solution of the present invention, the clamping assembly includes: a roller frame, the driving shaft of the driving assembly is connected to the roller frame; a conical roller, the conical roller is fixedly arranged in the roller frame, and the conical roller is internally provided with a groove to clamp the belt and realize reverse pushing.

[0008] As a preferred technical solution of the present invention, the clamping assembly further includes a bearing bracket fixedly arranged on the idler bracket; bearings, the bearings are arranged on both sides of the bearing bracket, and both ends of the tapered idler are respectively connected to the corresponding bearings to fix the idler.

[0009] As a preferred technical solution of the present invention, springs are arranged at both ends of the fixed bracket of the transmitting end of the explosion-proof magnetic switch, and one end of each spring is connected to the fixed bracket.

[0010] As a preferred technical solution of the present invention, an orifice plate is arranged between the transmitting end and the receiving end of the explosion-proof magnetic switch, and through holes are formed in the orifice plate.

[0011] As a preferred technical solution of the present invention, the belt deviation adjusting device further includes a tensioning pulley which is in contact with and fits the belt to adjust the belt tension; a tensioning device which is arranged at intervals beside the belt and is connected to the belt for control; a belt tension protection device which monitors the tightness of the belt in real time.

[0012] As a preferred technical solution of the present invention, the belt deviation adjusting device includes a driving component base frame and driving component support ribs. The driving component is arranged on the driving component base frame, and one end of the driving component support rib is supported and connected to the driving component base frame, which can reduce the space occupied on both sides of the present invention and at the same time improve the stability of the belt deviation adjusting device.

[0013] As a preferred technical solution of the present invention, the belt deviation adjusting device further includes a smoke sensor which detects the condition of the belt and sends instructions; a spray watering device which receives the instructions of the smoke sensor and sprays misty water on the belt.

[0014] As a preferred technical solution of the present invention, the belt deviation adjusting device further includes a centralized controller.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Dynamic deviation adjustment without the need to stop the machine. The grooved tapered idler can effectively exert a reverse pushing effect on the belt. Since bearings are arranged on the tapered idler, the bearings are fixed on the idler bracket by the bearing bracket, and there is also a driving component on the other side of the tapered idler. Devices such as the driving component support ribs and the driving component base frame form an integral body to adjust the offset belt.

[0017] 2. The present invention uses a hydraulic system and idlers to correct the deviation of the belt. The hydraulic system has good stability and a large deviation correction force. Moreover, the contact area between the idler and the belt is small, resulting in less frictional damage to the belt. The side of the conical idler in contact with the belt has grooves. When the edge of the belt enters the idler grooves, the belt will not swing when being pushed in the reverse direction, improving the stability of the deviation correction process.

[0018] 3. It changes the situation that the existing belt conveyor needs to stop for deviation correction and maintenance. Under the operating state, it can always ensure the normal operation of the belt. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the clamping assembly and the belt in an embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the clamping assembly in an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the transmitting end and the receiving end of the explosion-proof magnetic switch in an embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the right deviation prevention travel switch and the left travel switch in an embodiment of the present invention. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] The present invention provides a deviation correction device for a belt conveyor, which is mainly used on a belt conveyor, especially in environments such as slopes, curves, and where the transported material has a relatively large viscosity. The present invention can correct and adjust the belt 31 that has deviated from its original position without stopping the machine, greatly improving the production efficiency and reducing the labor intensity of maintenance personnel. According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the deviation correction device specifically includes:

[0026] A clamping assembly that fixedly clamps the belt 31. According to the attachment Figure 2 shown, there are two clamping assemblies, which respectively clamp the two ends of the belt 31;

[0027] The driving assembly 24 is drivingly connected to the clamping assembly to drive the clamping assembly to move to a preset position. During the process of conveying materials, the belt 31 often deviates from its initial position. In the existing belt conveyors, generally the operation of the whole machine is shut down and then the position of the belt 31 is corrected manually. However, in the present invention, when the belt deviates during operation, the driving assembly 24 drives the clamping assembly that fixedly clamps the belt 31 to move, so as to correct and adjust the belt 31 that has deviated from its initial position. That is to say, even when the belt conveyor is operating, the belt 31 that has deviated from its initial position can be corrected and adjusted in real time.

[0028] The above-mentioned driving assembly 24 can be a cylinder or other types of power devices, only for driving the clamping assembly that clamps the belt 31 to move. In the present invention, a hydraulic cylinder driving mode is adopted to drive the clamping assembly to move. Of course, which type of driving assembly 24 is specifically selected can be determined according to the actual situation of the on-site belt conveyor.

[0029] The deviation adjusting device includes a driving assembly base frame 35 and a driving assembly support rib 34. The driving assembly 24 is arranged on the driving assembly base frame 35. As shown in the appendix Figure 2 The driving assembly base frame 35 is arranged on both sides of the belt 31. In order to strengthen the supporting force of the driving assembly base frame 35 on the driving assembly 24, etc., one end of the driving assembly support rib 34 is supported and connected to the driving assembly base frame 35, and the other end is connected to the ground to strengthen the supporting force of the driving assembly base frame 35, which can reduce the space occupied on both sides of the present invention and at the same time improve the stability of the deviation adjusting device.

[0030] The explosion-proof magnetic switch transmitting end fixing frame 38 is arranged directly above the belt 31. Blocks 48 are arranged at some positions on both sides of the explosion-proof magnetic switch transmitting end fixing frame 38. One end of one of the blocks 48 is beside one end of the belt 31, and one end of the other block 48 is beside the other end of the belt 31; the function of the block 48 is to touch the belt 31 that has deviated from its initial position. For example, when the belt 31 deviates to the right during the process of conveying materials, it will touch the right block 48 at this time. Under the driving action of the deviation movement of the belt 31, the explosion-proof magnetic switch transmitting end fixing frame 38 will be synchronously shifted to the right.

[0031] At least three explosion-proof magnetic switch transmitting ends 39 are arranged on the explosion-proof magnetic switch transmitting end fixing frame 38. Each explosion-proof magnetic switch transmitting end 39 is arranged on the explosion-proof magnetic switch transmitting end fixing frame 38 and there is a predetermined deviation distance between them. As shown in the appendix Figure 4As shown, the distances between the transmitting ends 39 of each explosion-proof magnetic switch are uniform and the same;

[0032] An explosion-proof magnetic switch receiving end 40, which is arranged corresponding to the explosion-proof magnetic switch transmitting end 39, and is specifically arranged above each explosion-proof magnetic switch transmitting end 39, and the two are axially corresponding, and the explosion-proof magnetic switch receiving end 40 is used to receive signals sent by different explosion-proof magnetic switch transmitting ends 39;

[0033] When the belt 31 is transporting materials normally (the belt 31 is not offset), the explosion-proof magnetic switch transmitting end 39 in the middle position always sends a signal to the explosion-proof magnetic switch receiving end 40 during the process of the belt 31 transporting materials to form a loop; when the belt 31 deviates to the right during the process of conveying materials, that is, when it deviates, the belt 31 touches the block 48, and then drives the explosion-proof magnetic switch transmitting end fixing frame 38 to move to the right through the block 48, and at this time, the explosion-proof magnetic switch transmitting end 39 in the middle position will also move to the right accordingly, when the belt 31 deviates to the explosion-proof magnetic switch transmitting end 39 on the left side through the perforation on the perforated plate 37 to form a loop with the explosion-proof magnetic switch receiving end 40, then the right drive component 24 is started to adjust the deviated belt 31 in the opposite direction; when the belt 31 is deviated to the explosion-proof magnetic switch transmitting end 39 in the middle to penetrate the perforation of the perforated plate 37 to form a loop with the explosion-proof magnetic switch receiving end 40, the right drive component 24 stops working and returns to its original position, thereby completing the correction adjustment of the belt 31.

[0034] A perforated plate 37 is provided between the explosion-proof magnetic switch transmitting end 39 and the explosion-proof magnetic switch receiving end 40, and a perforated plate 37 is penetrated therethrough; during normal operation, the middle explosion-proof magnetic switch transmitting end 39 passes through the perforated hole of the perforated plate 37 to form a loop with the explosion-proof magnetic switch receiving end 40, which represents that the present invention is operating normally; if the belt 31 deviates to the right during operation, the belt sensor will alarm and send an alarm message to the monitoring center, and then the explosion-proof magnetic switch transmitting end 39 on the left side forms a loop with the explosion-proof magnetic switch receiving end 40 through the perforated hole of the perforated plate 37, and then the driving component 24 on the right side is started to push the conical roller 29 to correct and adjust the deviated belt 31.

[0035] Springs 44 are provided at both ends of the explosion-proof magnetic switch transmitting end fixing frame 38, and one end of the spring 44 is connected to the fixing frame 45. Specifically, the spring 44 is arranged in the spring fixing seat 43. When the belt 31 deviates, it will drive the explosion-proof magnetic switch transmitting end fixing frame 38 and the block 48 to move. Under the action of the spring 44, the block 48 is rebounded back to the initial position to prepare for the next operation.

[0036] The clamping assembly of this embodiment includes the following:

[0037] The idler support 25, the drive shaft 33 of the drive assembly 24 is connected to the idler support 25. When correcting the offset position of the belt 31, the entire idler support 25 is directly driven to move through the drive assembly 24;

[0038] The conical idler 29 is fixedly arranged in the idler support 25. The conical idler 29 is internally provided with grooves. The function of using the grooved conical idler 29 is to avoid the belt 31 from swinging during pushing.

[0039] The bearing support 26 is fixedly arranged on the idler support 25;

[0040] The bearings 28 are arranged on both sides of the bearing support 26. The two ends of the conical idler 29 are respectively connected to the corresponding bearings 28 to fix the conical idler 29 in the idler support 25 without moving.

[0041] In addition, this embodiment further includes the following:

[0042] The tensioning pulley 9 is in contact with the belt 31 to adjust the tension of the belt 31. When the center distance of the belt 31 cannot be adjusted, the tensioning pulley 9 can be used to tension the belt, thereby controlling the tension of the belt 31.

[0043] The tensioning device 17 is arranged at intervals beside the belt and is connected to the belt 31 for control, and is also used to adjust the tension of the belt 31 in real time to avoid the accident of the belt 31 running off due to being too loose.

[0044] The tension protection device 3 monitors the tightness of the belt 31 in real time and sends instructions to the tensioning pulley 9 and the tensioning device 17 to adjust the tension of the belt 31 in real time.

[0045] The smoke sensor 50 and the spray watering device 8; due to the friction between the belt 31 and the frame, heat is easily generated, which will cause the materials on the belt conveyor to heat up and burn, thus triggering a fire accident, posing a serious threat to safe production, and at least causing the shutdown and production suspension, seriously affecting the production efficiency. Therefore, the smoke sensor 50 in this embodiment constantly detects the condition of the belt 31. When the above accident occurs, a warning signal is sent to the spray watering device 8. After receiving the instruction of the smoke sensor 50, the spray watering device 8 sprays misty water on the belt 31.

[0046] The idler 30, a part of the position on the belt is in contact connection with the idler 30. The contact area between the idler 30 and the belt 31 is small, and the friction with the belt 31 is small, reducing the overheating caused by the friction with the belt 31. It should also be noted that the idler 30 and the conical idler 29 are of an integral structure.

[0047] The centralized controller 1 and the single-unit control and protector 2. After the centralized controller 1 is started, each controller and sensor are in the working state. Then, when the single-unit control and protector 2 is turned on, the driving roller 7 starts to run. If it is a multi-stage belt 31 transportation, it is turned on step by step in sequence, and the material enters the present invention from the transfer machine.

[0048] Certainly, this embodiment also includes a tensioning device 4, a no-material delay stop device 5, a coal accumulation sensor 6, a deviation sensor 10, a support plate 11, a conical roller groove 12, an anti-deviation support screw 13, an anti-deviation right travel switch 14, a belt tensioning device 15, a redirecting idler 16, a conveyor frame 18, a head coal bunker 19, a speed sensor 20, a temperature sensor 21, a lower idler 22, an emergency stop and locking switch 23, a drive assembly fixing frame 27, a idler frame fixing screw 32, a idler support 46, a idler fixing frame 47, and a left travel switch 49. These structural components are all shown in the drawings, so no further detailed description is given.

[0049] In summary, the embodiments of the present invention are as follows:

[0050] During normal operation, the transmitting end 39 of the explosion-proof magnetic switch in the middle passes through the perforation of the orifice plate 37 to form a circuit with the receiving end 40 of the explosion-proof magnetic switch, indicating that the present invention is operating normally; if the belt 31 deviates to the right during operation, the belt sensor will alarm and send an alarm message to the monitoring center. Then, the transmitting end 39 of the left explosion-proof magnetic switch forms a circuit with the receiving end 40 of the explosion-proof magnetic switch through the perforation of the orifice plate 37, and then the right drive assembly 24 is started to push the conical idler 29 to correct and adjust the deviated belt 31.

[0051] Compared with the prior art, the present invention can achieve:

[0052] 1. Dynamic deviation adjustment without the need to stop the machine. The grooved conical idler 29 can effectively exert a reverse pushing effect on the belt 31. Since the bearing 28 is provided on the conical idler 29, the bearing 28 is provided with a bearing bracket 26 fixed on the idler frame, and there is also a drive assembly 24 on the other side of the conical idler 29. These devices such as the drive assembly support rib 34 and the drive assembly base frame 35 form an integral body to adjust the deviated belt 31.

[0053] 2. The present invention uses a hydraulic system and idlers 30 to adjust the deviation of the belt 31. The hydraulic system has good stability and large deviation adjustment force, and the contact area between the idler 30 and the belt 31 is small, resulting in less frictional damage to the belt 31. The side of the idler 30 in contact with the belt 31 has grooves, and the edge of the belt 31 enters the idler groove. When the belt 31 is pushed in the reverse direction, it will not swing, improving the stability of the deviation adjustment process.

[0054] 3. It has changed the situation that the existing belt conveyor needs to be shut down for deviation adjustment and maintenance. During the running state, the normal operation of the belt can always be ensured.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A deviation rectifying device for a belt conveyor, characterized in that The deviation adjusting device includes: A clamping assembly that fixedly clamps the belt; A driving assembly that is drivingly connected to the clamping assembly to drive the clamping assembly to move to a preset position; A fixed bracket for the transmitting end of the explosion-proof magnetic switch, with stoppers provided on both sides of the fixed bracket for the transmitting end of the explosion-proof magnetic switch. One end of one of the stoppers is located beside one end of the belt, and one end of the other stopper is located beside the other end of the belt. The stoppers are used to touch the belt that has deviated from the initial position. When the belt deviates to the right during the process of conveying materials, it will touch the right stopper at this time. Under the driving effect of the belt deviation movement, the fixed bracket for the transmitting end of the explosion-proof magnetic switch will be synchronously offset to the right; The transmitting ends of the explosion-proof magnetic switches, with at least 3 transmitting ends of the explosion-proof magnetic switches. Each transmitting end of the explosion-proof magnetic switch is arranged on the fixed bracket for the transmitting end of the explosion-proof magnetic switch and is spaced at a predetermined offset distance; The receiving ends of the explosion-proof magnetic switches, which are arranged corresponding to the transmitting ends of the explosion-proof magnetic switches and are used to receive signals sent by different transmitting ends of the explosion-proof magnetic switches. The receiving ends of the explosion-proof magnetic switches are located above each transmitting end of the explosion-proof magnetic switch, and they are axially corresponding to each other; The clamping assembly includes: A roller frame, to which the drive shaft of the driving assembly is connected; A conical roller, which is fixedly arranged inside the roller frame. The conical roller is internally provided with a groove to clamp the belt and achieve reverse pushing; A bearing frame, which is fixedly arranged on the roller frame; Bearings, which are arranged on both sides of the bearing frame. The two ends of the conical roller are respectively connected to the corresponding bearings to fix the roller; The deviation adjusting device further includes: A tensioning wheel, which is in contact with the belt to adjust the tension of the belt; A tensioning device, which is arranged at intervals beside the belt and is in control connection with the belt; A tension protection device, which monitors the tightness of the belt in real time; Rollers, with partial positions on the belt in contact connection with the rollers; Springs are provided at both ends of the fixed bracket for the transmitting end of the explosion-proof magnetic switch, and one end of each spring is connected to the fixed bracket. A hole plate is arranged between the transmitting end of the explosion-proof magnetic switch and the receiving end of the explosion-proof magnetic switch, and through holes are formed in the hole plate. The springs are arranged inside the spring fixed seats. Since the belt deviation will drive the fixed bracket for the transmitting end of the explosion-proof magnetic switch and the stoppers to move, under the action of the springs, the stoppers will bounce back to the initial position for the next operation; During normal operation, the middle transmitting end of the explosion-proof magnetic switch passes through the through hole of the hole plate to form a circuit with the receiving end of the explosion-proof magnetic switch, indicating that the deviation adjusting device is operating normally. If the belt deviates to the right during operation, the belt sensor will alarm and send an alarm message to the monitoring center. Then, the left transmitting end of the explosion-proof magnetic switch forms a circuit with the receiving end of the explosion-proof magnetic switch through the through hole of the hole plate, and then the right driving assembly is started to push the conical roller to correct and adjust the belt that has deviated from the initial position; The deviation adjustment device is used on a belt conveyor and can achieve real-time correction and adjustment of the belt that has deviated from its original position without stopping the machine.

2. The deviation adjusting device of a belt conveyor according to claim 1, characterized in that: The deviation adjustment device includes a driving component base frame and driving component support ribs. The driving component is arranged on the driving component base frame, and one end of the driving component support ribs is supported and connected to the driving component base frame.

3. The deviation adjusting device of a belt conveyor according to claim 1, characterized in that, The deviation adjustment device further includes: a smoke sensor that detects the condition of the belt and sends instructions; a spray watering device that receives the instructions from the smoke sensor and sprays misty water on the belt.

4. The deviation rectifying device of a belt conveyor according to claim 1, characterized in that: The deviation adjustment device further includes a centralized controller and a single-unit control and protector. After the centralized controller is started, each controller and sensor are in a working state. Then, when the single-unit control and protector is turned on, the driving roller starts to operate. If it is a multi-stage belt transportation, it is turned on step by step in sequence, and the material enters the deviation adjustment device from the transfer machine.

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