A boiler ash bucket hoist speed abnormality early warning device

Abstract

The utility model relates to automatic control technical field, concretely is a kind of boiler ash slag hopper hoist speed abnormal early warning device, including fixed block, pivot one and pivot two, the pivot one and the pivot two are respectively rotationally connected in the inside of the fixed block, the front of the fixed block is provided with the detection piece for detecting the pivot two rotating speed, the detection piece includes the installation shell being arranged in the front of the fixed block, the inside of the installation shell is provided with sensor, the inside of the sensor is provided with inner ring, the movable mounting of the inner ring has fixed plate, this boiler ash slag hopper hoist speed abnormal early warning device, using the fixed plate and fixed pin snap joint pivot two front end inside the inner ring realizable center positioning and installation, six hexagonal distribution's slide rod and movable block in the inner ring can be linked chain movement and make multiple movable block simultaneously approach or away from the center of circle, thereby can push multiple fixed pin simultaneously approach pivot two, complete the fixation of pivot two and the positioning of rotating center.

Description

Technical Field

[0001] This utility model relates to the field of automation control technology, specifically to an early warning device for abnormal speed of a boiler ash bucket elevator. Background Technology

[0002] The abnormal speed warning device for boiler ash bucket elevator is a device used to monitor the operating status of boiler ash bucket elevator. Its core function is to detect the speed of key rotating shafts to warn of abnormal situations and avoid equipment failure or safety problems caused by abnormal speed.

[0003] Existing speed sensors require the shaft to be accurately inserted into the center of the sensor during installation. Then, a pin is inserted into the pin hole at the top of the shaft, and the sensor and shaft are fixed by the friction of the pin. Since the pin is inserted between the sensor and the pin hole from one direction, the pin will push the sensor away from the center of the shaft. During the subsequent use of the sensor and the machine, the offset of the rotation center of the shaft will cause one side of the sensor to be compressed when it rotates. At the same time, the unidirectional offset will cause the detection accuracy to decrease. To address this, we propose an abnormal speed warning device for boiler ash bucket elevators. Utility Model Content

[0004] One of the technical problems this application aims to solve is that the unidirectional pin thrust causes the sensor to deviate from the center of the rotating shaft, resulting in distortion of the detection signal.

[0005] To solve the above-mentioned technical problems, this application provides an abnormal speed warning device for a boiler ash bucket elevator, including a fixed block, a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are respectively rotatably connected inside the fixed block, and a detection element for detecting the speed of the second rotating shaft is provided at the front of the fixed block.

[0006] Preferably, the detection component includes a mounting shell disposed at the front of the fixed block, a sensor disposed inside the mounting shell, an inner ring disposed inside the sensor, a fixing plate movably mounted on the inner ring, a fixing pin abutting inside the fixing plate, and the fixing pin abutting at the front end of the rotating shaft.

[0007] Preferably, the inner ring has a plurality of evenly distributed slide rods and movable blocks slidably connected inside, the fixed plate is disposed at the front of the movable block, and one end of two adjacent slide rods slides inside the movable block.

[0008] Preferably, a screw is rotatably connected to the upper part of the inner ring, and a second pusher block and a first pusher block are slidably connected to the upper part of the inner ring. A pusher plate is provided at the front of the first pusher block, and the pusher plate slides at the rear end of the second pusher block. The rear end of the first pusher block is located at the front of the movable block, and the screw is threadedly connected to the inside of the second pusher block.

[0009] Preferably, a limiting block is provided on the rear side of the movable block, and the limiting block slides inside the inner ring.

[0010] Preferably, the inner side of the fixing plate is provided with two sliding plates, and the left and right sides of the fixing pin are provided with fixing grooves, and the sliding plates slide inside the fixing grooves.

[0011] Preferably, the fixed plate is internally rotatably connected to two limiting plates, and each of the two limiting plates is provided with a spring on a side away from the limiting plate, with the end of the spring away from the limiting plate located inside the fixed plate.

[0012] This utility model has at least the following beneficial effects:

[0013] 1. The center positioning and installation are achieved by using the sliding fixed plate and fixed pin in the inner ring to lock the front end of the rotating shaft 2. The six hexagonal sliding rods and movable blocks in the inner ring can be moved in an interlocking manner so that multiple movable blocks can move closer to or away from the center at the same time. This can push multiple fixed pins to move closer to the rotating shaft 2 at the same time, thus completing the fixing of the rotating shaft 2 and the positioning of the rotation center.

[0014] 2. Rotating the screw can drive the push block 2 and the push plate to move and push the movable block to slide. The inner slide plate of the fixed plate cooperates with the fixing pin and the fixing groove to prevent the fixing pin from slipping off. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the mounting shell structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the slide bar structure of this utility model;

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

[0019] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0020] In the diagram: 1. Fixed block; 11. Rotating shaft one; 12. Rotating shaft two; 2. Detection component; 21. Mounting shell; 22. Sensor; 23. Inner ring; 24. Fixing pin; 241. Fixing groove; 242. Slide plate; 25. Fixing plate; 251. Limiting plate; 252. Spring; 26. Slide rod; 27. Movable block; 28. Limiting block; 29. ​​Screw; 291. Pushing block one; 292. Pushing plate; 293. Pushing block two. Detailed Implementation

[0021] 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.

[0022] Example 1: Please refer to Figure 1-4 This utility model provides a technical solution: an abnormal speed warning device for a boiler ash bucket elevator, including a fixed block 1, a rotating shaft 11 and a rotating shaft 12, the rotating shaft 11 and the rotating shaft 12 are respectively rotatably connected inside the fixed block 1, and a detection element 2 for detecting the speed of the rotating shaft 12 is provided at the front of the fixed block 1.

[0023] Furthermore, the detection component 2 includes a mounting shell 21 disposed at the front of the fixed block 1. A sensor 22 is disposed inside the mounting shell 21. An inner ring 23 is disposed inside the sensor 22. A fixing plate 25 is movably mounted on the inner ring 23. A fixing pin 24 abuts against the inside of the fixing plate 25. The fixing pin 24 abuts against the front end of the rotating shaft 12.

[0024] Sensor 22 is an analog speed sensor. The inner ring 23 is the structure in which the rotating shaft is installed. The fixing plate 25 can slide inside the inner ring 23 to drive the fixing pin 24 to move. The fixing pin 24 can be locked at the front end of the rotating shaft 12 to complete the center positioning of the rotating shaft 12 and the installation of the sensor 22. The fixing pin 24 is inserted into the inside of the fixing plate 25, and then the position of the fixing plate 25 is adjusted to realize the function of the fixing pin 24 pushing the rotating shaft 12 to position the center and fix it.

[0025] Furthermore, the inner ring 23 has multiple evenly distributed slide rods 26 and movable blocks 27 slidably connected inside, and the fixed plate 25 is set at the front of the movable block 27. One end of two adjacent slide rods 26 slides inside the movable block 27.

[0026] Six hexagonal sliding rods 26 and movable blocks 27 are distributed inside the inner ring 23. There is a space for overlapping connection between two adjacent sliding rods 26. The movable blocks 27 are distributed in their overlapping positions. Pushing the movable blocks 27 can make two adjacent sliding rods 26 slide, which in turn drives the adjacent movable blocks 27 to slide. Through interlocking movements, multiple sliding rods 26 can slide along with multiple movable blocks 27. Multiple movable blocks 27 can slide simultaneously closer to or away from the center of the inner ring 23.

[0027] Furthermore, a screw 29 is rotatably connected to the upper part of the inner ring 23, and a second push block 293 and a first push block 291 are slidably connected to the upper part of the inner ring 23. A push plate 292 is provided at the front of the first push block 291, and the push plate 292 slides at the rear end of the second push block 293. The rear end of the first push block 291 is provided at the front of the movable block 27, and the screw 29 is threadedly connected to the inside of the second push block 293.

[0028] The push plate 292 is locked at the rear end of the push block 293. When the push block 293 moves, it can drive the push block 291 and the push plate 292 to move. When the push plate 292 moves, it can drive the upper movable block 27 to slide towards the center of the inner ring 23. The screw 29 is used to push the push block 293 to move.

[0029] Furthermore, a limiting block 28 is provided on the rear side of the movable block 27, and the limiting block 28 slides inside the inner ring 23.

[0030] Furthermore, two sliding plates 242 are provided on the inner side of the fixing plate 25, and fixing grooves 241 are provided on both the left and right sides of the fixing pin 24, and the sliding plates 242 slide inside the fixing grooves 241.

[0031] The limiting block 28 is used to guide the sliding of the movable block 27, so that the movable block 27 slides towards the center of the inner ring 23. The sliding plate 242 can cooperate with the fixing groove 241 to help fix the position of the fixing pin 24, preventing the fixing pin 24 from slipping out of the inside of the fixing plate 25 when it is not pressed against the outer wall of the second rotating shaft 12. In order to increase the installation stability of the device, the fixing pin 24 can be set as a trapezoid with a rear end width greater than the front end. The inclined surface of the trapezoid is used to lock the side wall of the second rotating shaft 12, increasing the friction of the fixing pin 24.

[0032] Example 2: Please refer to Figure 5 Based on Embodiment 1, this utility model provides another technical solution: two limiting plates 251 are rotatably connected inside the fixing plate 25, and springs 252 are provided on the opposite sides of the two limiting plates 251. The end of the spring 252 away from the limiting plate 251 is located inside the fixing plate 25.

[0033] Spring 252 can push the limiting plate 251 to rotate and lock it inside the fixing groove 241. When the fixing pin 24 is pushed into the fixing plate 25, the limiting plate 251 will be pushed to rotate by the fixing pin 24. The limiting plate 251 pushes the spring 252 to contract. When the limiting plate 251 and the fixing groove 241 coincide, the spring 252 rebounds and pushes the limiting plate 251 to rotate and lock it inside the fixing groove 241. This can complete the fixing of the fixing pin 24. The inclined setting of the rear end of the limiting plate 251 can push the limiting plate 251 to rotate when the fixing pin 24 is pulled, releasing the locking of the limiting plate 251 to the fixing pin 24. This can increase the locking protection function of the fixing pin 24.

[0034] 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 process, method, article, or apparatus.

[0035] 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.

Claims

1. A boiler ash bucket elevator speed abnormality early warning device, comprising a fixed block (1), a rotating shaft one (11) and a rotating shaft two (12), characterized in that: The first rotating shaft (11) and the second rotating shaft (12) are rotatably connected inside the fixed block (1), and the front part of the fixed block (1) is provided with a detection element (2) for detecting the rotation speed of the second rotating shaft (12).

2. The boiler ash bucket elevator speed abnormality early warning device according to claim 1, characterized in that: The detection component (2) includes a mounting shell (21) disposed at the front of the fixed block (1). A sensor (22) is disposed inside the mounting shell (21). An inner ring (23) is disposed inside the sensor (22). A fixing plate (25) is movably mounted on the inner ring (23). A fixing pin (24) abuts against the inside of the fixing plate (25). The fixing pin (24) abuts against the front end of the rotating shaft (12).

3. The boiler ash bucket elevator speed abnormality early warning device according to claim 2, characterized in that: The inner ring (23) is slidably connected with a plurality of evenly distributed slide rods (26) and movable blocks (27). The fixed plate (25) is disposed at the front of the movable block (27), and one end of two adjacent slide rods (26) slides inside the movable block (27).

4. The boiler ash bucket elevator abnormal speed early warning device according to claim 3, characterized in that: The upper part of the inner ring (23) is rotatably connected to a screw (29). The upper part of the inner ring (23) is slidably connected to a second push block (293) and a first push block (291). A push plate (292) is provided at the front of the first push block (291). The push plate (292) slides at the rear end of the second push block (293). The rear end of the first push block (291) is provided at the front of the movable block (27). The screw (29) is threadedly connected to the inside of the second push block (293).

5. The boiler ash bucket elevator speed abnormality early warning device according to claim 3, characterized in that: A limiting block (28) is provided on the rear side of the movable block (27), and the limiting block (28) slides inside the inner ring (23).

6. The boiler ash bucket elevator speed abnormality early warning device according to claim 2, characterized in that: The inner side of the fixing plate (25) is provided with two sliding plates (242), and the fixing pin (24) is provided with fixing grooves (241) on both the left and right sides. The sliding plates (242) slide inside the fixing grooves (241).

7. The boiler ash bucket elevator speed abnormality early warning device according to claim 2, characterized in that: The fixed plate (25) is internally rotatably connected to two limiting plates (251). Each of the two limiting plates (251) is provided with a spring (252) on the opposite side. The end of the spring (252) away from the limiting plate (251) is located inside the fixed plate (25).

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