Drop alarm for return belt of belt conveyor

Abstract

The purpose of this invention is to solve the problem of difficulty in detecting ore falling onto the return conveyor belt of a belt conveyor. It provides an alarm device for ore falling onto the return conveyor belt, belonging to the field of mining machinery equipment. The device consists of a bearing seat bracket on each side of the belt conveyor frame on the return conveyor belt. Each bearing seat bracket has a bearing seat, and a long shaft is positioned between the two bearing seats, with both ends of the long shaft extending beyond the bearing seats. A baffle with a length equal to the width of the conveyor belt is mounted downwards on the long shaft. A rectangular trigger plate is fixedly connected to one end of the long shaft, and the other end of the trigger plate is fixedly connected to the end of a limit switch linkage. The limit switch is electrically connected to a photoelectric alarm. This invention can promptly detect ore falling onto the return conveyor belt, effectively reducing belt downtime during operation, improving work efficiency, and reducing economic losses.

Description

Technical Field

[0001] This utility model belongs to the field of mining machinery and equipment, and specifically relates to a device for timely detection and alarm of ore falling onto the lower return conveyor belt during conveyor belt operation. Background Technology

[0002] Belt conveyors are crucial transportation equipment in mining machinery. During transport, deviations or unstable operation of the conveyor can frequently cause ore or slag to fall onto the lower return belt. Alternatively, blockages in the conveyor's hopper can prevent timely unloading of ore, leading to spillage onto the return belt. If not detected promptly, the ore can bounce across various parts of the return belt. Inadequate cleaning can cause ore to embed itself in the conveyor rollers, resulting in scratches, abrasions, or even roller damage. This necessitates downtime for repairs, consuming manpower and causing economic losses, while also posing significant safety hazards to production. Therefore, early detection of ore falling onto the return belt is essential. Summary of the Invention

[0003] The purpose of this invention is to solve the problem of difficulty in detecting ore falling onto the return conveyor belt of a belt conveyor, and to provide an alarm device for ore falling onto the return conveyor belt. This device can promptly detect ore falling onto the return conveyor belt, effectively reducing belt downtime, improving operational efficiency, and minimizing economic losses.

[0004] An alarm device for ore falling off the return conveyor belt of a conveyor belt includes a bearing housing bracket, a bearing housing, a long shaft, a trigger plate, a limit switch with a connecting rod, and a photoelectric alarm.

[0005] A bearing seat bracket is installed on each side of the conveyor frame on the return conveyor belt. The bearing seat bracket is equipped with a bearing seat. A long shaft is installed between the two bearing seats, and both ends of the long shaft extend out of the bearing seats. A baffle with the same length as the width of the conveyor belt is installed downward on the long shaft. The trigger plate is rectangular. One end of the long shaft is fixedly connected to one end of the trigger plate, and the other end of the trigger plate is fixedly connected to the end of the linkage of the limit switch.

[0006] The limit switch is electrically connected to the photoelectric alarm.

[0007] Furthermore, in the aforementioned conveyor belt return belt ore drop alarm device, the distance between the lower end of the baffle and the return belt is 20~30mm.

[0008] Furthermore, in the aforementioned conveyor belt return conveyor belt ore drop alarm device, the limit switch and the photoelectric alarm are connected in series in the circuit, and the limit switch is in the normally open state.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] 1. This utility model device can promptly detect ore that has fallen onto the return conveyor belt, effectively reducing the downtime of the conveyor belt during operation, improving work efficiency, and reducing costs.

[0011] 2. The limit switch of this utility model has a large linkage travel range, is less affected by external factors, does not have malfunctions, and is reliable in operation.

[0012] 3. This utility model device is simple to install and maintain, and highly operable. Attached Figure Description

[0013] Figure 1 Top view of the device of this utility model;

[0014] Figure 2 Right view of the device of this utility model;

[0015] Among them, 1. bearing housing bracket, 2. bearing housing, 3. long shaft, 4. trigger plate, 5. limit switch, 6. photoelectric alarm, 7. connecting rod, 8. baffle, 9. frame, 10. tape. Detailed Implementation

[0016] An alarm device for ore falling off the return conveyor belt of a conveyor belt includes a bearing housing bracket 1, a bearing housing 2, a long shaft 3, a trigger plate 4, a limit switch 5, and a photoelectric alarm 6;

[0017] A bearing seat bracket is installed on each side of the conveyor frame 9 on the return conveyor belt. The bearing seat is equipped with a bearing seat, and a long shaft is provided between the two bearing seats. Both ends of the long shaft extend out of the bearing seats and can rotate along the axis inside the bearing seats. A baffle 8 with the same length as the width of the conveyor belt is provided on the long shaft. The lower end of the baffle is 20~30mm away from the return conveyor belt. Maintaining this distance allows the baffle to sensitively detect the falling ore on the return conveyor belt and quickly push it away, thereby driving the long shaft to rotate. One end of the long shaft is fixedly connected to one end of the trigger plate, and the other end of the trigger plate is fixedly connected to the end of the limit switch linkage 7.

[0018] The limit switch is connected in series with the photoelectric alarm in the circuit, and the limit switch is in the normally open state.

[0019] The principle and usage of this device are as follows:

[0020] When the device is operating normally, the baffle is in a vertical position and the star switch is in the normally open position, meaning it is not powered. Therefore, the photoelectric alarm does not work.

[0021] The return conveyor belt is located on the lower layer of the conveyor belt. When ore falls onto the normally operating return conveyor belt 10, the ore will touch the baffle as the return conveyor belt moves. The baffle is pushed, which drives the long shaft sleeved in the bearing seat to rotate. The trigger plate fixedly connected to one end of the long shaft rotates, and the other end of the trigger plate presses down. The linkage of the limit switch fixedly connected to that end of the trigger plate will press down with the pressing trigger plate, thereby triggering the internal action of the limit switch. The limit switch changes from normally open to closed, thereby energizing the audible and visual alarm to achieve linkage.

[0022] The operator can stop the machine, clean up the fallen ore, reset the limit switches and photoelectric alarms, and restore the belt conveyor to operation.

[0023] This device can sensitively detect ore falling onto the return conveyor belt and promptly alert workers, reducing the likelihood of the return belt being scratched or damaged. This effectively reduces belt downtime, improves work efficiency, and lowers costs. The limit switch linkage of this device has a large travel range, is less affected by external factors, and is free from malfunctions, ensuring reliable operation. Furthermore, this device is simple to install and maintain, and highly operable.

Claims

1. A device for detecting ore drop during the return of a conveyor belt, characterized in that, Includes bearing housing bracket, bearing housing, long shaft, trigger plate, limit switch and photoelectric alarm; A bearing seat bracket is installed on each side of the conveyor frame on the return conveyor belt. The bearing seat bracket is equipped with a bearing seat. A long shaft is installed between the two bearing seats, and both ends of the long shaft extend out of the bearing seats. A baffle with the same length as the width of the conveyor belt is installed on the long shaft. One end of the long shaft is fixedly connected to one end of a trigger plate, and the other end of the trigger plate is fixedly connected to the end of the linkage of the limit switch. The limit switch is electrically connected to the photoelectric alarm.

2. The ore-drop alarm device for the return conveyor belt of the belt conveyor according to claim 1, characterized in that, The distance between the lower end of the baffle and the return conveyor belt is 20~30mm.

3. The ore-drop alarm device for the return conveyor belt of the belt conveyor according to claim 1, characterized in that, The limit switch is connected in series with the photoelectric alarm in the circuit, and the limit switch is in the normally open state.

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