Belt deviation sensing and alarming device

Abstract

The utility model discloses a kind of belt conveyor deviation sensing alarm equipment, belong to belt conveyor safety monitoring technical field.The equipment includes sensor main body, rotating support, vertical roll, secondary shell, main shell, positioner and movable cover.Rotating support is set on the surface of sensor main body by pivot, vertical roll is installed in rotating support top, secondary shell and main shell are sleeved on the surface of sensor main body, its same side is provided with side through-hole as belt passage, positioner is slidably arranged in the inner side wall of secondary shell, and opening is provided in the same side of side through-hole, movable cover is set in secondary shell by pivot.When belt deviation contacts vertical roll, rotating support is pushed to rotate, sensor main body triggers different levels of alarm or shutdown signal according to rotation angle, through the interference of external environment effectively reducing misfire caused by protective shell sleeving structure and adjustable opening design, improve detection accuracy and equipment reliability, the equipment is suitable for the deviation monitoring and safety protection of various belt conveyors.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring technology for belt conveyors, and in particular to a belt conveyor deviation sensing and alarm device. Background Technology

[0002] Belt conveyors are widely used in industrial production, but belt misalignment is prone to occur during operation, leading to material spillage, equipment wear, or even shutdown accidents. Existing misalignment sensing devices mostly adopt mechanical contact detection methods, which directly or indirectly push the detection rod through the belt to trigger a micro switch or proximity switch, thereby realizing alarm or shutdown functions.

[0003] These devices typically employ a two-stage action mechanism: the first stage triggers an alarm when there is a slight deviation, while the second stage stops the machine directly when there is a severe deviation. However, in actual use, it has been found that simply installing the sensor on the side of the conveyor belt can lead to the exposed vertical roller being susceptible to external interference, potentially resulting in false triggering.

[0004] Therefore, a sensing alarm device composed of sensors and corresponding protective housings is designed to reduce the occurrence of accidental activation. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that are prone to false triggering, and to propose a belt conveyor misalignment sensing alarm device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A belt conveyor misalignment sensing alarm device includes a sensor body and a rotating bracket rotatably mounted on the surface of the sensor body housing via a rotating shaft, with a vertical roller mounted on the top of the rotating bracket;

[0008] The sub-shell and the main shell are fitted onto the surface of the sensor body and fixed with screws. The sub-shell and the main shell have side through holes on the same side for use as a channel for the belt.

[0009] An adjustment plate is slidably disposed on the inner side wall of the sub-shell, and the adjustment plate and the side through hole have an opening on the same side;

[0010] The movable cover is rotatably mounted inside the sub-shell via a pivot.

[0011] In one possible design, the inner part of the sub-shell is rotatably provided with a threaded shaft, and the adjusting plate is threadedly sleeved on the outer wall of the threaded shaft. By rotating the threaded shaft, the adjusting plate is driven to move, so as to adjust the opening position to adapt to the belt range.

[0012] In one possible design, the top end of the threaded shaft extends to the outside of the sub-shell and is fixedly provided with a polygonal connecting rod. A screw cap is slidably fitted on the outer wall of the polygonal connecting rod, and the threaded shaft is rotated by manually turning the screw cap.

[0013] In one possible design, the side wall of the sub-shell has a groove, and the side wall of the movable cover has a fixed insert. The insert is located inside the groove, and the top of the insert and the top of the sub-shell both have arc-shaped grooves. The bottom of the screw cap has a fixed limiting ring, which cooperates with the annular groove formed by the two arc-shaped grooves to lock or unlock the movable cover.

[0014] In one possible design, the side of the sensor body is provided with multiple interfaces for transmission, used to connect to an external control system.

[0015] In one possible design, the bottom of the sensor body is provided with two supports, and the surface of the supports is provided with mounting holes for fixing to the belt conveyor bracket by bolts.

[0016] In one possible design, the surface of the sensor housing located on the same side as the rotating bracket is provided with an arc-shaped limiting groove with the same center as the rotation point of the rotating bracket, which is used to cooperate with the rotating bracket to limit its range of motion.

[0017] In this application, during actual use, the equipment is bolted to the bracket on the side of the belt conveyor. When the belt is running, if the belt deviates and comes into contact with the vertical roller of the equipment, it will drive the vertical roller to rotate. If the deviation continues to increase, the vertical roller will be squeezed and deviated.

[0018] The equipment is divided into two stages. When the edge of the conveyor belt drives the vertical roller to rotate and squeeze, causing it to tilt, if the tilt angle of the vertical roller is greater than the predetermined initial angle, the sensor body will send a switch signal to alarm. If the vertical roller continues to tilt greater than the action angle, it will output another set of switch signals to control the belt conveyor to stop.

[0019] During equipment installation, the operator manually screws on the screw cap, which drives the threaded shaft to rotate via the polygonal connecting rod, thereby driving the adjustment plate to move up and down and adjust its opening to within the range of belt offset.

[0020] When the equipment detects belt misalignment, after the conveyor belt is reset and can be used normally, the operator can manually move the screw cover upwards to disengage the bottom limiting ring from the arc-shaped groove, thereby releasing the fixed state of the movable cover and opening it. At this time, the operator can manually reset the rotating bracket with the vertical roller installed. After the operation is completed, the movable cover can be closed and fixed again by reversing the operation.

[0021] In this utility model, the belt conveyor misalignment sensing alarm device adopts a two-level alarm mechanism, which can issue alarm or stop signals when the degree of misalignment is different, thereby improving the safety and reliability of the equipment.

[0022] In this utility model, the belt conveyor misalignment sensing alarm device can adjust the belt channel to the range of belt deviation through a threaded shaft and a screw cap, and at the same time, the operating structure is integrated to facilitate operation.

[0023] In this invention, the housing structure not only provides protection for the sensor body but also covers and protects the vertical roller without affecting the original sensing, thereby reducing the possibility of misunderstanding or false triggering. It adopts a dual-level alarm mechanism, which can issue alarm or stop signals when the deviation degree is different, thus improving the safety and reliability of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of a belt conveyor misalignment sensing and alarm device proposed in this utility model;

[0025] Figure 2 This is an exploded structural diagram of a belt conveyor misalignment sensing and alarm device proposed in this utility model;

[0026] Figure 3 This is an exploded structural diagram of the secondary housing of a belt conveyor misalignment sensing alarm device proposed in this utility model.

[0027] In the diagram: 1. Sensor body; 2. Sub-shell; 3. Side through hole; 4. Adjustment plate; 5. Main shell; 6. Interface; 7. Arc-shaped limiting groove; 8. Support; 9. Rotating bracket; 10. Vertical roller; 11. Movable cover; 12. Threaded shaft; 13. Insert groove; 14. Tightening cover; 15. Polygonal connecting rod; 16. Limiting ring; 17. Arc-shaped groove; 18. Insert block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In one embodiment: Reference Figure 1 An alarm device includes: a sensor body 1, a sub-shell 2, a main shell 5, an adjustment plate 4, and a movable cover 11.

[0030] refer to Figure 2The sensor body 1 is mounted on the bracket on the side of the belt conveyor via two supports 8 at the bottom. Mounting holes are opened on the surface of the supports 8 for bolt fixing. The rotating bracket 9 is rotatably mounted on the surface of the sensor body 1 via a rotating shaft. A vertical roller 10 is mounted on its top. When the belt runs off-center, the vertical roller 10 contacts the belt and rotates or deviates. Multiple transmission interfaces 6 are provided on the side of the sensor body 1 for connecting to an external control system.

[0031] When the belt misaligns and contacts the vertical roller 10, it pushes the rotating bracket 9 to rotate around the axis. The sensor body 1 monitors the rotation angle in real time. When the angle reaches the preset first-level threshold, an alarm signal is triggered. When the angle continues to increase to the second-level threshold, a stop signal is triggered. The sensor body and related components can be LPK-J conveyor misalignment sensors.

[0032] The secondary shell 2 and the main shell 5 are fitted onto the surface of the sensor body 1 and fixed with screws. Their overall shape matches that of the sensor body 1, and they have space for the vertical roller 10 to move, thus ensuring the original offset detection while covering and protecting it. The secondary shell 2 and the main shell 5 have side through holes 3 on the same side as the belt channel. The adjustment plate 4 is slidably set on the inner wall of the secondary shell 2 to cover the empty space of the belt channel, thereby reducing the risk of false triggering. It has an opening on the same side as the side through hole 3. The adjustment plate 4 is driven by a threaded shaft 12, which is rotatably set inside the secondary shell 2. The adjustment plate 4 is threaded on the outer wall of the threaded shaft 12. The top end of the threaded shaft 12 extends to the outside of the secondary shell 2 and is fixedly set with a polygonal connecting rod 15. The screw cap 14 is slidably set on the outer wall of the polygonal connecting rod 15. By manually screwing the screw cap 14, the threaded shaft 12 can be rotated, thereby driving the adjustment plate 4 to move up and down and adjust its opening position to adapt to the belt deviation range.

[0033] refer to Figure 3 The movable cover 11 is rotatably mounted inside the sub-shell 2 via a pivot at the bottom to cover the internal components. The sub-shell 2 has a groove 13 on its side wall, and a block 18 is fixedly mounted on the side wall of the movable cover 11. The block 18 is located inside the groove 13. Both the top of the block 18 and the top of the sub-shell 2 have arc-shaped grooves 17. A limiting ring 16 is fixedly mounted at the bottom of the screw cover 14. When the screw cover 14 moves downward, the limiting ring 16 engages with the annular groove formed by the two arc-shaped grooves 17 to lock the movable cover 11. When the screw cover 14 moves upward, the limiting ring 16 disengages from the annular groove, and the movable cover 11 can be opened.

[0034] In actual operation, the equipment is bolted to the side support of the belt conveyor. When the belt deviates and comes into contact with the vertical roller 10, the vertical roller 10 rotates. If the deviation worsens, the vertical roller 10 is squeezed and deviates. The sensor body 1 monitors the tilt angle of the rotating support 9. When the tilt angle is greater than the preset primary angle, a switch signal alarm is issued. If the tilt continues to be greater than the action angle, another set of switch signals is output to control the belt conveyor to stop.

[0035] During installation and commissioning, the operator manually screws the screw cover 14, which drives the threaded shaft 12 to rotate via the polygonal connecting rod 15, thereby driving the adjustment plate 4 to move up and down and adjust its opening to the belt deviation range. When the equipment triggers an alarm, the maintenance personnel can move the screw cover 14 upward to disengage the limit ring 16 from the arc groove 17, open the movable cover 11, manually reset the rotating bracket 9 and the vertical roller 10, and finally close and fix the movable cover 11.

[0036] This application can be used in the field of safety monitoring of belt conveyors, or in other fields applicable to this application.

[0037] In another embodiment: Reference Figure 2 A belt conveyor misalignment sensing alarm device is applied to the field of belt conveyor safety monitoring. The surface of the sensor body 1 is also provided with an arc-shaped limiting groove 7, which is concentric with the rotation point of the rotating bracket 9, and is used to limit the range of motion of the rotating bracket 9.

[0038] A compression spring can be provided at the joint between the polygonal connecting rod 15 and the screw cap 14 to provide force for locking into the arc-shaped groove 17, thereby ensuring its stability.

[0039] However, as is well known to those skilled in the art, the working principle and wiring method of the sensor body 1 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A belt conveyor misalignment sensing and alarm device, characterized in that, include: The sensor body (1) and the rotating bracket (9) rotatably disposed on the surface of the housing of the sensor body (1) via a rotating shaft, wherein a vertical roller (10) is mounted on the top of the rotating bracket (9); Sub-shell (2) and main shell (5) are fitted onto the surface of the sensor body (1) and fixed with screws. Side through holes (3) are opened on the same side of the sub-shell (2) and main shell (5) to serve as channels for belts. The adjusting plate (4) is slidably disposed on the inner side wall of the sub-shell (2), and the adjusting plate (4) and the side through hole (3) have an opening on the same side; The movable cover (11) is rotatably mounted inside the sub-shell (2) via a rotating shaft.

2. The belt conveyor misalignment sensing and alarm device according to claim 1, characterized in that, The inner part of the sub-shell (2) is provided with a threaded shaft (12) for rotation. The adjusting plate (4) is threaded onto the outer wall of the threaded shaft (12). By rotating the threaded shaft (12), the adjusting plate (4) is driven to move to adjust the opening position to adapt to the belt range.

3. The belt conveyor misalignment sensing and alarm device according to claim 2, characterized in that, The top end of the threaded shaft (12) extends to the outside of the sub-shell (2) and is fixedly provided with a polygonal connecting rod (15). The outer wall of the polygonal connecting rod (15) is slidably fitted with a screw cap (14). The threaded shaft (12) is rotated by manually turning the screw cap (14).

4. The belt conveyor misalignment sensing and alarm device according to claim 3, characterized in that, The side wall of the sub-shell (2) is provided with a groove (13), and the side wall of the movable cover (11) is fixedly provided with a block (18). The block (18) is located inside the groove (13). The top of the block (18) and the top of the sub-shell (2) are both provided with arc-shaped grooves (17). The bottom of the screw cap (14) is fixedly provided with a limiting ring (16). The limiting ring (16) cooperates with the annular groove formed by the two arc-shaped grooves (17) to lock or unlock the movable cover (11).

5. The belt conveyor misalignment sensing and alarm device according to claim 4, characterized in that, The sensor body (1) has multiple transmission interfaces (6) on its side for connecting to an external control system.

6. The belt conveyor misalignment sensing and alarm device according to claim 5, characterized in that, The bottom of the sensor body (1) is provided with two supports (8), and the surface of the supports (8) is provided with mounting holes for fixing to the belt conveyor bracket by bolts.

7. The belt conveyor misalignment sensing and alarm device according to any one of claims 1 to 6, characterized in that, The sensor body (1) housing has an arc-shaped limiting groove (7) on the same side as the rotating bracket (9) on its surface, which is concentric with the rotation point of the rotating bracket (9) and is used to cooperate with the rotating bracket (9) to limit its range of motion.

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