Scraper blockage alarm mechanism

Abstract

The utility model relates to the technical field of scraper machines, and discloses a scraper machine blockage alarm mechanism which comprises a scraper machine shell, installation shafts are arranged at the left end and the right end of the front side of the scraper machine shell, one end of each installation shaft extends to the rear side of the scraper machine shell, and chain wheels located in the scraper machine shell are arranged on the outer sides of the two installation shafts. According to the material blocking alarm mechanism of the scraper, a pull ring is pulled backwards to drive a traction rod, a sliding block and a limiting block to move backwards, so that the limiting block is moved out of a limiting groove, position limitation on a positioning block is relieved, then a rotary knob can be screwed to drive a threaded rod to rotate, and the positioning block is driven to move downwards; when the mirror reflection type photoelectric sensor is dismounted, the arc-shaped pull rod is pulled backwards to pull out the mounting block from the interior of the rectangular frame, so that the mirror reflection type photoelectric sensor can be conveniently overhauled, maintained or replaced.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, specifically to a scraper conveyor material blockage alarm mechanism. Background Technology

[0002] The main working principle of a scraper conveyor is that a chain running around two parallel sprockets drags the material in the trough, thus completing the horizontal conveying of the material. When the material flow is blocked at the scraper conveyor outlet for some reason, the material will accumulate inside the scraper conveyor, causing problems such as motor stalling, shell deformation, and chain breakage. To protect the equipment itself, a blockage alarm mechanism is usually installed on the scraper conveyor. This typically uses a proximity switch photoelectric sensor, such as a specular reflective photoelectric sensor. By placing the specular reflective photoelectric sensor on one side of the inner wall of the trough, with the light emitted by the sensor pointing directly at the other side wall of the trough, under normal operating conditions, the sensor will detect blockages. Reflective photoelectric sensors can detect the side wall of the opposite trough. However, when material blockage occurs, the mirror-reflective photoelectric sensor can no longer detect the side wall of the opposite trough, thus triggering a switch and controlling the alarm to sound. However, in actual use, the existing scraper conveyor blockage alarm mechanism is inconvenient to disassemble because the mirror-reflective photoelectric sensor is usually fixedly connected to the scraper conveyor. Furthermore, the mirror-reflective photoelectric sensor is prone to failure after long-term operation, making it inconvenient to inspect, maintain, or replace the sensor, which is detrimental to its use. Therefore, a scraper conveyor blockage alarm mechanism is proposed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a scraper conveyor blockage alarm mechanism that offers advantages such as easy disassembly of the mirror-reflective photoelectric sensor. This solves the problems of existing scraper conveyor blockage alarm mechanisms where, in practical use, the mirror-reflective photoelectric sensor is typically fixedly connected to the scraper conveyor, making disassembly inconvenient. Furthermore, the mirror-reflective photoelectric sensor is prone to malfunction after prolonged operation, leading to difficulties in maintenance, repair, or replacement, thus hindering its usability.

[0005] (II) Technical Solution

[0006] To facilitate the disassembly of the mirror-reflective photoelectric sensor, this utility model provides the following technical solution: a scraper conveyor blockage alarm mechanism, comprising a scraper conveyor housing, with a mounting shaft extending to its rear side at both ends of the front side of the scraper conveyor housing, sprockets located inside the scraper conveyor housing on the outer sides of the two mounting shafts, a chain between the two sprockets, a scraper plate on the outer side of the chain, a drive assembly fixedly connected to the rear side of the left mounting shaft on the rear side of the scraper conveyor housing, a circular hole at the right end of the rear side of the inner wall of the scraper conveyor housing, a rectangular frame located behind the circular hole on the rear side of the scraper conveyor housing, a mounting block extending to its rear side inside the rectangular frame, and a mirror-reflective photoelectric sensor extending into the circular hole on the front side of the mounting block. A microcontroller is located above a rectangular frame on the rear side of the scraper conveyor housing. A buzzer alarm is located above the microcontroller on the rear side of the scraper conveyor housing. Both the upper and lower sides of the inner wall of the rectangular frame have a stop block whose end is attached to the front side of the mounting block. An arc-shaped pull rod is located on the rear side of the mounting block. A rectangular block is located on the bottom rear side of the rectangular frame. A rectangular groove is located on the top of the rectangular block. A threaded rod is located on the bottom of the rectangular block, with one end extending into the rectangular groove. A knob is located on the bottom of the threaded rod. A positioning groove is located directly above the threaded rod on the bottom of the mounting block. A positioning block is located inside the rectangular groove, with one end threaded to the outside of the threaded rod and the other end extending into the positioning groove. A limit groove is located on the rear bottom of the positioning block. A limit component is located on the rear side of the rectangular block, with one end extending into the limit groove.

[0007] Preferably, the drive assembly includes a drive motor, and the drive motor located on the right side of the left mounting shaft is fixedly installed on the rear side of the scraper conveyor housing. The output shaft of the drive motor is fixedly installed with a drive bevel gear, and a driven bevel gear with one end meshing with the drive bevel gear is fixedly installed on the rear side of the left mounting shaft.

[0008] Preferably, the limiting component includes a rectangular housing, a rectangular housing is fixedly installed on the rear side of the rectangular block, a slider is movably installed on the front side of the inner side of the rectangular housing, a limiting block with one end extending into the limiting groove is fixedly installed on the front side of the slider, a traction rod with one end extending into the rear side of the rectangular housing is fixedly installed on the rear side of the slider, a limiting spring located outside the traction rod is fixedly installed between the rear side of the slider and the rear side of the inner wall of the rectangular housing, and a pull ring is fixedly installed on the rear side of the traction rod.

[0009] Preferably, the bottom of the rectangular block has a mounting hole and a bearing is fixedly installed inside the mounting hole, and the threaded rod is rotatably connected to the rectangular block through the bearing.

[0010] Preferably, the bottom of the positioning block is provided with a threaded groove that matches the threaded rod, and the bottom rear side of the rectangular frame is provided with a first through hole that matches the positioning block.

[0011] Preferably, the inner wall of the rectangular housing has a second through hole adapted to the limiting block on the front side, the rectangular block has a third through hole adapted to the limiting block on the rear side, and the inner wall of the rectangular housing has a fourth through hole adapted to the traction rod on the rear side.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a scraper conveyor blockage alarm mechanism, which has the following beneficial effects:

[0014] The scraper conveyor's blockage alarm mechanism works by pulling the pull ring backward, which moves the traction rod, slider, and limit block backward, causing the limit block to move out of the limit groove and thus releasing the position restriction on the positioning block. Then, the knob can be turned to rotate the threaded rod, which moves the positioning block downward, causing it to move out of the positioning groove and thus releasing the fixing of the mounting block. At this point, pulling the arc-shaped pull rod backward will pull the mounting block out of the rectangular frame, allowing the mirror-reflective photoelectric sensor to be disassembled, thus facilitating the inspection, maintenance, or replacement of the mirror-reflective photoelectric sensor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial top view of the present invention;

[0017] Figure 3 This is a partial cross-sectional view of the circular hole of this utility model from the left side;

[0018] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Scraper conveyor housing; 2. Mounting shaft; 3. Sprocket; 4. Chain; 5. Scraper; 6. Drive assembly; 61. Drive motor; 62. Drive bevel gear; 63. Driven bevel gear; 7. Circular hole; 8. Rectangular frame; 9. Mounting block; 10. Mirror-reflective photoelectric sensor; 11. Microcontroller; 12. Buzzer alarm; 13. Stop block; 14. Arc-shaped pull rod; 15. Rectangular block; 16. Rectangular groove; 17. Threaded rod; 18. Knob; 19. Positioning groove; 20. Positioning block; 21. Limiting groove; 22. Limiting assembly; 221. Rectangular housing; 222. Slider; 223. Limiting block; 224. Traction rod; 225. Limiting spring; 226. Pull ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a scraper conveyor blockage alarm mechanism, including a scraper conveyor housing 1. The left and right ends of the front side of the scraper conveyor housing 1 are rotatably connected to a mounting shaft 2 extending to the rear side. The outer sides of the two mounting shafts 2 are fixedly mounted with sprockets 3 located inside the scraper conveyor housing 1. A chain 4 is driven between the two sprockets 3. Scraper plates 5 are fixedly mounted on the outer side of the chain 4. The number of scraper plates 5 is not less than fifteen and they are evenly distributed.

[0022] A drive assembly 6 is fixedly installed on the rear side of the scraper conveyor housing 1, with one end fixedly connected to the rear side of the left mounting shaft 2. The drive assembly 6 includes a drive motor 61. The drive motor 61 is fixedly installed on the rear side of the scraper conveyor housing 1, located on the right side of the left mounting shaft 2. The model of the drive motor 61 can be SEWR17. A drive bevel gear 62 is fixedly installed on the output shaft of the drive motor 61. A driven bevel gear 63 with one end meshing with the drive bevel gear 62 is fixedly installed on the rear side of the left mounting shaft 2. The drive motor 61 is electrically connected to the control terminal and power supply on the scraper conveyor.

[0023] A circular hole 7 is provided on the right rear side of the inner wall of the scraper conveyor housing 1. A rectangular frame 8 is fixedly installed on the rear side of the scraper conveyor housing 1, located behind the circular hole 7. A mounting block 9 with one end extending to its rear side is movably installed inside the rectangular frame 8. A mirror-reflective photoelectric sensor 10 with one end extending into the circular hole 7 is fixedly installed on the front side of the mounting block 9. The model of the mirror-reflective photoelectric sensor 10 can be VL53L0. A microcontroller 11 is fixedly installed on the rear side of the scraper conveyor housing 1, located above the rectangular frame 8. The model of the microcontroller 11 can be STM8S207CBT6. A buzzer alarm 12 is fixedly installed on the rear side of the scraper conveyor housing 1, located above the microcontroller 11. A stop block 13 with one end abutting the front side of the mounting block 9 is fixedly installed on both the upper and lower sides of the inner wall of the rectangular frame 8. An arc-shaped pull rod 14 is fixedly installed on the rear side of the mounting block 9.

[0024] The mirror-reflective photoelectric sensor 10 is electrically connected to the microcontroller 11 and the power supply. The microcontroller 11 is electrically connected to the buzzer alarm 12 and the power supply. The buzzer alarm 12 is electrically connected to the power supply. Since the application of the mirror-reflective photoelectric sensor is a conventional technology in the field, and the power supply is also common knowledge in the field, and since this utility model is mainly used to protect the mechanical structure, the working principle, control method and circuit connection will not be explained in detail.

[0025] A rectangular block 15 is fixedly installed on the bottom rear side of the rectangular frame 8. A rectangular groove 16 is opened on the top of the rectangular block 15. A threaded rod 17 with one end extending into the rectangular groove 16 is movably installed on the bottom of the rectangular block 15. A mounting hole is opened on the bottom of the rectangular block 15, and a bearing is fixedly installed inside the mounting hole. The threaded rod 17 is rotatably connected to the rectangular block 15 through the bearing. A knob 18 is fixedly installed on the bottom of the threaded rod 17. A positioning groove 19 is opened on the bottom of the mounting block 9, located directly above the threaded rod 17. A positioning block 20 with one end threadedly connected to the outside of the threaded rod 17 and the other end extending into the positioning groove 19 is movably installed inside the rectangular groove 16. A threaded groove that matches the threaded rod 17 is opened on the bottom rear side of the rectangular frame 8. A first through hole that matches the positioning block 20 is opened.

[0026] A limiting groove 21 is formed at the bottom rear side of the positioning block 20. A limiting component 22 extending into the limiting groove 21 is fixedly installed on the rear side of the rectangular block 15. The limiting component 22 includes a rectangular housing 221. The rectangular housing 221 is fixedly installed on the rear side of the rectangular block 15. A slider 222 is movably installed on the front side of the interior of the rectangular housing 221. A limiting block 223 extending into the limiting groove 21 is fixedly installed on the front side of the slider 222. A limiting block 223 extending into the limiting groove 21 is fixedly installed on the rear side of the slider 222. The traction rod 224 on the rear side of the rectangular housing 221 has a second through hole on the front side of the inner wall that matches the limiting block 223. The rectangular block 15 has a third through hole on the rear side that matches the limiting block 223. The inner wall of the rectangular housing 221 has a fourth through hole on the rear side that matches the traction rod 224. A limiting spring 225 located outside the traction rod 224 is fixedly installed between the rear side of the slider 222 and the rear side of the inner wall of the rectangular housing 221. A pull ring 226 is fixedly installed on the rear side of the traction rod 224.

[0027] In operation, the drive motor 61 can be started via the control terminal on the scraper conveyor to drive the drive bevel gear 62 to rotate, which in turn drives the left mounting shaft 2 and the left sprocket 3 to rotate via the driven bevel gear 63, thereby driving the chain 4 to rotate counterclockwise. This, in turn, drives the scraper 5 to move the material to the right inside the scraper conveyor housing 1, thus performing the material conveying operation. Secondly, by setting a mirror-reflective photoelectric sensor 10, under normal machine operation, the mirror-reflective photoelectric sensor 10 can detect the front side of the inner wall of the scraper conveyor housing 1. However, when material blockage occurs, the accumulation of material at the outlet position will block the light emitted by the mirror-reflective photoelectric sensor 10. At this time, the mirror-reflective photoelectric sensor 10 will not be able to detect the front side of the inner wall of the scraper conveyor housing 1, thus enabling the microcontroller 1 to... 1. Activate the buzzer alarm 12 to alert the outside world. When the mirror-reflective photoelectric sensor 10 malfunctions, the operator can pull the pull ring 226 backward to move the traction rod 224, slider 222, and limit block 223 backward, so that the limit block 223 moves out of the limit groove 21, thereby releasing the position restriction on the positioning block 20. Then, turn the knob 18 to rotate the threaded rod 17, thereby moving the positioning block 20 downward, so that the positioning block 20 moves out of the positioning groove 19, thereby releasing the fixation on the mounting block 9. At this time, pull the arc-shaped pull rod 14 backward to pull the mounting block 9 out of the rectangular frame 8, so that the mirror-reflective photoelectric sensor 10 can be disassembled, thus facilitating the inspection, maintenance, or replacement of the mirror-reflective photoelectric sensor 10.

[0028] In summary, the scraper conveyor blockage alarm mechanism moves the traction rod 224, slider 222, and limit block 223 backward by pulling the pull ring 226 backward, causing the limit block 223 to move out of the limit groove 21, thereby releasing the position restriction on the positioning block 20. Then, the knob 18 can be turned to rotate the threaded rod 17, causing the positioning block 20 to move downward, thus moving it out of the positioning groove 19 and releasing the fixation on the mounting block 9. At this point, pulling the arc-shaped pull rod 14 backward will move the mounting block 9 out of the rectangular frame 8. The mirror-reflective photoelectric sensor 10 can be removed by pulling it out, which facilitates the inspection, maintenance or replacement of the mirror-reflective photoelectric sensor 10. This solves the problem that in the actual use of existing scraper conveyor blockage alarm mechanisms, the mirror-reflective photoelectric sensor on the mechanism is usually fixedly connected to the scraper conveyor, making it inconvenient to disassemble the mirror-reflective photoelectric sensor. Furthermore, the mirror-reflective photoelectric sensor is prone to failure after long-term operation, which makes it inconvenient to inspect, maintain or replace the mirror-reflective photoelectric sensor, thus hindering its use.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scraper conveyor blockage alarm mechanism, comprising a scraper conveyor housing (1), wherein each of the left and right ends of the front side of the scraper conveyor housing (1) is provided with a mounting shaft (2) extending to its rear side, and sprockets (3) located inside the scraper conveyor housing (1) are provided on the outer sides of the two mounting shafts (2), a chain (4) is provided between the two sprockets (3), and a scraper plate (5) is provided on the outer side of the chain (4), and a drive assembly (6) is provided on the rear side of the scraper conveyor housing (1), one end of which is fixedly connected to the rear side of the left mounting shaft (2), and the inner wall of the scraper conveyor housing (1) is further provided with a drive assembly (6) fixedly connected to the rear side of the left mounting shaft (2), and the rear side of the scraper conveyor housing (1) is further provided with a drive assembly (6) fixedly connected to the rear side of the left mounting shaft (2), and the inner wall of the scraper conveyor housing (1) is further provided with a drive assembly (6) fixedly connected to the rear side of the left mounting shaft (2). A circular hole (7) is provided on the right side. A rectangular frame (8) is provided on the rear side of the scraper machine housing (1) behind the circular hole (7). A mounting block (9) with one end extending to its rear side is provided inside the rectangular frame (8). A mirror-reflective photoelectric sensor (10) with one end extending into the circular hole (7) is provided on the front side of the mounting block (9). A microcontroller (11) is provided on the rear side of the scraper machine housing (1) above the rectangular frame (8). A buzzer alarm (12) is provided on the rear side of the scraper machine housing (1) above the microcontroller (11). The feature is that: The inner walls of the rectangular frame (8) are provided with a stop block (13) on both the upper and lower sides, one end of which is attached to the front side of the mounting block (9). An arc-shaped tie rod (14) is provided on the rear side of the mounting block (9). A rectangular block (15) is provided on the bottom rear side of the rectangular frame (8). A rectangular groove (16) is provided on the top of the rectangular block (15). A threaded rod (17) extending into the rectangular groove (16) is provided on the bottom of the rectangular block (15). The bottom of the threaded rod (17) is provided with... There is a knob (18), and the bottom of the mounting block (9) is provided with a positioning groove (19) located directly above the threaded rod (17). Inside the rectangular groove (16), there is a positioning block (20) with one end threaded to the outside of the threaded rod (17) and the other end extending into the positioning groove (19). The bottom rear side of the positioning block (20) is provided with a limiting groove (21), and the rear side of the rectangular block (15) is provided with a limiting component (22) with one end extending into the limiting groove (21).

2. The scraper conveyor blockage alarm mechanism according to claim 1, characterized in that: The drive assembly (6) includes a drive motor (61). The drive motor (61) located on the right side of the left mounting shaft (2) is fixedly installed on the rear side of the scraper machine housing (1). The output shaft of the drive motor (61) is fixedly installed with a drive bevel gear (62). A driven bevel gear (63) with one end meshing with the drive bevel gear (62) is fixedly installed on the rear side of the left mounting shaft (2).

3. The scraper conveyor blockage alarm mechanism according to claim 1, characterized in that: The limiting component (22) includes a rectangular housing (221). The rectangular housing (221) is fixedly installed on the rear side of the rectangular block (15). A slider (222) is movably installed on the front side of the interior of the rectangular housing (221). A limiting block (223) with one end extending into the limiting groove (21) is fixedly installed on the front side of the slider (222). A traction rod (224) with one end extending into the rear side of the rectangular housing (221) is fixedly installed on the rear side of the slider (222). A limiting spring (225) located outside the traction rod (224) is fixedly installed between the rear side of the slider (222) and the rear side of the inner wall of the rectangular housing (221). A pull ring (226) is fixedly installed on the rear side of the traction rod (224).

4. The scraper conveyor blockage alarm mechanism according to claim 1, characterized in that: The bottom of the rectangular block (15) is provided with an installation hole and a bearing is fixedly installed inside the installation hole. The threaded rod (17) is rotatably connected to the rectangular block (15) through the bearing.

5. The scraper conveyor blockage alarm mechanism according to claim 1, characterized in that: The bottom of the positioning block (20) is provided with a threaded groove that is compatible with the threaded rod (17), and the bottom rear side of the rectangular frame (8) is provided with a first through hole that is compatible with the positioning block (20).

6. The scraper conveyor blockage alarm mechanism according to claim 3, characterized in that: The inner wall of the rectangular housing (221) has a second through hole adapted to the limiting block (223) on the front side, the rectangular block (15) has a third through hole adapted to the limiting block (223) on the rear side, and the inner wall of the rectangular housing (221) has a fourth through hole adapted to the traction rod (224) on the rear side.

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