Scraper chain jumping, chain inclining and chain breaking detection device

Abstract

The utility model relates to a scraper chain jumping, inclined chain and broken chain detection device, which comprises a fixed support plate, the right side of the fixed support plate is fixedly connected with a PLC (Programmable Logic Controller), the right side of the PLC is fixedly connected with a control box, the right side of the control box is fixedly provided with a driving structure, the right side of the control box is fixedly connected with a support rod, and the right side of the support rod is fixedly connected with a motor. And the right side of the control box is movably connected with an impact rod. According to the chain jumping, inclined chain and chain breaking detection device for the scraper conveyor, through the arrangement of the driving structure and the cooperation with the use of the control box, the design principles of simple structure, reliable principle, sensitive action, stability and durability are adopted, the inclined chain must be reported and the chain breaking must be stopped since the device is put into use, and the damage to equipment caused by the chain jumping, inclined chain and chain breaking detection device is reduced; meanwhile, the working environment is obviously improved, the workload of on-site civilized production is reduced, the enthusiasm of post workers is greatly improved, the production cost is saved, the effective starting time of equipment is prolonged, and normal operation of a production system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper chain skipping, oblique chain and chain break detection, in particular to a scraper chain skipping, oblique chain and chain break detection device. Background Art

[0002] Scraper conveyors are widely used in the coal preparation industry because of their solid structure, which can withstand external forces such as impact, collision, smashing and pressing of coal, gangue or other hard materials; short body, easy to install; reverse operation, easy to handle bottom chain accidents; simple structure, and can be fed or unloaded at any point on the conveying length. However, it is easy to have chain breakage failure, which seriously affects the safe production of the entire coal preparation plant. Therefore, it is very important to analyze the causes of chain breakage accidents and prevent them.

[0003] In the long-term operation of scraper conveyors, wear or material jams may easily cause scraper breakage, scraper chain loosening and chain jumping, and scraper chain breaking. Analyze the causes of chain breakage and take corresponding measures to prevent chain breakage from affecting the safe production of coal preparation plants. The scraper conveyor chain break protection device can moderately reduce the scope of production safety accidents and reduce losses. The use of combined broken, inclined, and skipped chain protection devices can greatly reduce production accidents caused by chain breaks, prevent chain break accidents in advance, and effectively reduce the frequency of chain break failures. To this end, we propose a scraper chain skipping, inclined chain, and broken chain detection device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a scraper chain skipping, oblique chain and chain break detection device, which has the advantages of mandatory reporting of oblique chains and mandatory stop of broken chains, thereby reducing the harm caused to the equipment and solving the problems of scraper breakage, scraper chain loosening and chain skipping, and scraper chain breakage caused by wear or material blockage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a scraper chain skipping, oblique chain and broken chain detection device, comprising a fixed support plate, a PLC controller is fixedly connected to the right side of the fixed support plate, a control box is fixedly connected to the right side of the PLC controller, a driving structure is fixedly arranged on the right side of the control box, a support rod is fixedly connected to the right side of the control box, a strike rod is movably connected to the right side of the control box, a metal sensor is fixedly connected to the bottom of the strike rod, a fixed base is fixedly arranged on the bottom of the fixed support plate, an adjustment slot is opened inside the fixed base, a fixing card is movably connected inside the fixed base, and a fixing bolt is threadedly connected inside the fixed base;

[0006] The driving structure comprises a mounting seat, the outer surface of the support rod is threadedly connected with the mounting seat, a mounting hole is provided inside the mounting seat, a heat dissipation hole is provided inside the mounting seat, and a rubber strip is fixedly connected inside the mounting seat.

[0007] Furthermore, a time relay and an industrial control computer are fixedly installed inside the control box, an audible and visual alarm is fixedly arranged inside the PLC controller, and an audible and visual alarm light is fixedly connected to the surface of the PLC controller.

[0008] Furthermore, the right side of the PLC controller is electrically connected to the industrial control computer inside the control box, and the interior of the fixed support plate is provided with 6 threaded holes that are equidistantly distributed.

[0009] Furthermore, a through hole is provided inside the impact rod, and a mounting seat is fixedly connected inside the through hole. The impact rod is connected to the support rod through the internal through hole and the mounting seat.

[0010] Furthermore, the adjusting slot is in the shape of an elongated strip as a whole, and the height inside the slot is adapted to the diameter of the threaded contact head of the fixing bolt. The fixing card is connected to the fixing base box through the fixing bolt and the adjusting slot.

[0011] Furthermore, a thread groove is fixedly provided inside the mounting hole, and thread teeth are fixedly provided on the outer surface of the support rod, and the threads of the thread teeth are adapted to the threads of the thread groove inside the mounting hole.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. The scraper conveyor chain skipping, inclined chain and broken chain detection device is configured with a driving structure and cooperates with the use of a control box. During operation, the time relay inside the control box is used to monitor the operation status of the scraper conveyor. At this time, the PLC controller is used to control the operation of the scraper conveyor and upstream equipment, and to feedback the equipment status to the industrial computer. At the same time, the sound and light alarm inside the PLC controller is used to issue a sound and light alarm to notify the post operators. The industrial computer is used to display the equipment operation status and control and supervise the equipment. At the same time, during the normal production and transportation of the scraper conveyor, The scraper will hit the two impact rods on the detection device at a fixed frequency at the same time, and the metal sensor installed on the impact rod will be moved back and forth together with the impact rod. A proximity switch is installed at the end of the reciprocating movement. When the metal sensing device reaches the end point each time, the normally open point proximity switches SQ1 and SQ2 are closed, the circuit is energized, the normally open contact (5-9) of the intermediate relay is energized to close, and the normally closed contact (2-10) is energized to open. The time relays KT1 (1-3) and KT2 (1-3) will be energized to reset within a fixed time, completing a cycle.

[0014] 2. The scraper chain skipping, chain tilting and chain breaking detection device is provided with a time relay and an industrial control computer installed inside the control box. When the chain skipping, chain breaking or chain tilting occurs during transportation, the scraper conveyor scraper will be out of sync when hitting the impact rod. At this time, the scraper will hit the impact rod front and back. The two proximity switches will also be closed at different time periods, which will cause the intermediate relay to be unable to be energized for a long time, forming a path. When the time exceeds the set time of the time relay KT1 or KT2 and cannot be reset, the time relay will always make one of the KT1 (6-8) or KT2 (6-8) energized delay coils (6-8) closed. , transmit a fault signal to the PLC controller. The PLC controller controls the on-site equipment according to the pre-set program and controls the sound and light alarm to alarm. At the same time, the dispatching desk industrial control machine will display the scraper conveyor fault, and the dispatcher will notify the post personnel to deal with it. The design principle of simple structure, reliable principle, sensitive action, stable and durable has been adopted since it was put into use. The inclined chain must be reported and the broken chain must be stopped, which reduces the harm to the equipment. At the same time, the working environment has been significantly improved, the workload of civilized production on site has been reduced, the enthusiasm of post workers has been greatly improved, the production cost has been saved, the effective startup time of equipment has been increased, and the normal operation of the production system has been ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the driving structure of the utility model;

[0017] Figure 3 This is a three-dimensional detail diagram of the connection between the support rod and the impact rod of the utility model.

[0018] In the figure: 1. Fixed support plate; 2. PLC controller; 3. Control box; 4. Drive structure; 401. Mounting seat; 402. Mounting hole; 403. Heat dissipation hole; 404. Rubber strip; 5. Support rod; 6. Impact rod; 7. Metal sensor; 8. Fixed base; 9. Adjustment slot; 10. Fixing card; 11. Fixing bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3In this embodiment, a scraper chain skipping, inclined chain and broken chain detection device comprises a fixed support plate 1, a PLC controller 2 is fixedly connected to the right side of the fixed support plate 1, a control box 3 is fixedly connected to the right side of the PLC controller 2, a driving structure 4 is fixedly arranged on the right side of the control box 3, a support rod 5 is fixedly connected to the right side of the control box 3, a striking rod 6 is movably connected to the right side of the control box 3, a metal sensor 7 is fixedly connected to the bottom of the striking rod 6, a fixed base 8 is fixedly arranged at the bottom of the fixed support plate 1, an adjusting slot 9 is opened inside the fixed base 8, a fixing card 10 is movably connected inside the fixed base 8, and a fixing bolt 11 is threadedly connected inside the fixed base 8;

[0021] The driving structure 4 includes a mounting seat 401, the outer surface of the support rod 5 is threadedly connected to the mounting seat 401, the mounting seat 401 has a mounting hole 402, the mounting seat 401 has a heat dissipation hole 403, and the mounting seat 401 is fixedly connected to a rubber strip 404;

[0022] In a specific implementation, six threaded holes are opened in the interior of the fixed support plate 1 and are distributed at equal intervals. During the installation of the detection device body, the detection device and the scraper can be threadedly connected by using bolts.

[0023] When implementing, follow these steps:

[0024] 1) Start the control box 3 first, so that the time relay inside the control box 3 is used to monitor the running status of the scraper conveyor. At this time, the PLC controller 2 is used to control the operation of the scraper conveyor and upstream equipment, and at the same time feedback the equipment status to the industrial computer;

[0025] 2) Then the sound and light alarm inside the PLC controller 2 is used to send out sound and light alarms to notify the post operators, and the industrial computer is used to display the equipment operation status and control and supervise the equipment;

[0026] 3) During the normal production and transportation process of the scraper, the scraper will hit the two impact rods 6 on the detection device at a fixed frequency at the same time, and hit the metal sensor 7 installed on the rod 6. At this time, the metal sensor 7 will move back and forth with the impact rod 6;

[0027] 4) Finally, a proximity switch is installed at the end point of the reciprocating motion. Each time the metal sensing device reaches the end point, the normally open point proximity switches SQ1 and SQ2 are closed, the circuit is energized, the normally open contacts (5-9) of the intermediate relay are energized to close, the normally closed contacts (2-10) are energized to open, and the time relays KT1 (1-3) and KT2 (1-3) are energized to reset within a fixed time, completing a cycle.

[0028] In summary, the scraper conveyor chain skipping, chain slanting and chain breaking detection device is provided with a driving structure 4 and cooperates with the use of a control box 3. During operation, the time relay inside the control box 3 is used to monitor the operation status of the scraper conveyor. At this time, the PLC controller 2 is used to control the operation of the scraper conveyor and upstream equipment, and to feedback the equipment status to the industrial computer. At the same time, the sound and light alarm inside the PLC controller 2 is used to send out sound and light alarms to notify the post operators. The industrial computer is used to display the equipment operation status and control and supervise the equipment. At the same time, the scraper conveyor is in the normal production and transportation process. In the process, the scraper will hit the two impact rods 6 on the detection device at a fixed frequency at the same time, and the metal sensor 7 installed on the impact rod 6 will be hit. At this time, the metal sensor 7 will make a reciprocating motion together with the impact rod 6. A proximity switch is installed at the end of the reciprocating motion. When the metal sensing device reaches the end point each time, the normally open point proximity switches SQ1 and SQ2 are closed, the circuit is energized, the normally open contacts (5-9) of the intermediate relay are energized to close, and the normally closed contacts (2-10) are energized to open. The time relays KT1 (1-3) and KT2 (1-3) will be energized to reset within a fixed time, completing a cycle.

[0029] In addition, by installing a time relay and an industrial control computer inside the control box 3, when a chain jump, chain breakage or inclined chain occurs during transportation, the scraper conveyor scraper will be out of sync when hitting the impact rod 6. At this time, the scraper will hit the impact rod 6 front and back, and the two proximity switches will be closed at different time periods, which will cause the intermediate relay to be unable to get power for a long time, forming a path. When the time exceeds the set time of the time relay KT1 or KT2 and cannot be reset, one of the delay coils (6-8) of the time relay KT1 (6-8) or KT2 (6-8) will always be closed, and a fault signal will be transmitted to the PLC controller 2. The PLC controller 2 controls the on-site equipment according to the pre-set program, controls the sound and light alarm to alarm, and at the same time, the dispatching desk industrial control machine will display the scraper conveyor fault, and the dispatcher will notify the post personnel to handle it.

[0030] Example 2: Time relay is used to monitor the operating status of the scraper conveyor

[0031] During normal production and transportation of the scraper conveyor, the KM AC contactor is energized and attracted, and the scraper will simultaneously hit the two impact rods on the detection device at a fixed frequency, and the metal sensing device installed on the impact rod will make a reciprocating motion together with the impact rod. A proximity switch is installed at the end of the reciprocating motion. When the metal sensing device reaches the end point each time, the normally open point proximity switches SQ1 and SQ2 are closed, the circuit is energized, the normally open contacts (5-9) of the intermediate relays KT1 (1-3) and KT2 (1-3) are energized to close, and the normally closed contacts (2-10) are energized to open. The time relay will be energized to reset within a fixed time, completing a cycle.

[0032] When the chain jumps, breaks or tilts during transportation, the scraper conveyor will be out of sync when hitting the impact rod. At this time, the scraper will hit the impact rod front and back, and the two proximity switches will be closed at different time periods, which will cause the intermediate relay to be unable to get power for a long time, forming a path. When the time exceeds the set time of the time relay KT1 or KT2 and cannot be reset, the time relay will always make one of the KT1 (6-8) or KT2 (6-8) energized delay coils (6-8) closed, and transmit a fault signal to the PLC controller. The PLC controls the on-site equipment according to the pre-set program and controls the sound and light alarm to alarm. At the same time, the dispatching desk industrial control machine will display the scraper conveyor fault, and the dispatcher will notify the post personnel to handle it.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scraper chain skipping, chain tilting and chain breaking detection device, comprising a fixed support plate (1), characterized in that: The right side of the fixed support plate (1) is fixedly connected to a PLC controller (2), the right side of the PLC controller (2) is fixedly connected to a control box (3), the right side of the control box (3) is fixedly provided with a driving structure (4), the right side of the control box (3) is fixedly connected to a support rod (5), the right side of the control box (3) is movably connected to an impact rod (6), the bottom of the impact rod (6) is fixedly connected to a metal sensor (7), the bottom of the fixed support plate (1) is fixedly provided with a fixed base (8), an adjustment slot (9) is provided inside the fixed base (8), a fixing card (10) is movably connected inside the fixed base (8), and a fixing bolt (11) is threadedly connected inside the fixed base (8); The driving structure (4) comprises a mounting seat (401), the outer surface of the support rod (5) is threadedly connected to the mounting seat (401), a mounting hole (402) is provided inside the mounting seat (401), a heat dissipation hole (403) is provided inside the mounting seat (401), and a rubber strip (404) is fixedly connected inside the mounting seat (401).

2. A scraper chain skipping, chain slanting and chain breaking detection device according to claim 1, characterized in that: A time relay and an industrial control computer are fixedly installed inside the control box (3), an audible and visual alarm is fixedly arranged inside the PLC controller (2), and an audible and visual alarm light is fixedly connected to the surface of the PLC controller (2).

3. A scraper chain skipping, chain slanting and chain breaking detection device according to claim 1, characterized in that: The right side of the PLC controller (2) is electrically connected to the industrial control computer inside the control box (3), and the interior of the fixed support plate (1) is provided with 6 threaded holes that are equidistantly distributed.

4. A scraper chain skipping, chain slanting and chain breaking detection device according to claim 1, characterized in that: The impact rod (6) is provided with a through hole inside, and a mounting seat (401) is fixedly connected inside the through hole. The impact rod (6) is connected to the support rod (5) via the through hole inside and the mounting seat (401).

5. A scraper chain skipping, chain slanting and chain breaking detection device according to claim 1, characterized in that: The adjusting slot (9) is in the shape of an elongated strip as a whole, and its internal height is adapted to the diameter of the threaded contact head of the fixing bolt (11). The fixing card (10) is connected to the fixing base (8) box via the fixing bolt (11) and the adjusting slot (9).

6. A scraper chain skipping, chain slanting and chain breaking detection device according to claim 1, characterized in that: A thread groove is fixedly provided inside the mounting hole (402), and thread teeth are fixedly provided on the outer surface of the support rod (5), and the threads of the thread teeth are adapted to the threads of the thread groove inside the mounting hole (402).

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