Roller rod breakage alarm device for roller kiln

Abstract

The utility model discloses a roller breakage alarm device for roller kiln, including mounting plate, connecting shaft, connecting chain, magnet subassembly, magnetic switch subassembly, the outer surface of mounting plate is penetrated by connecting shaft, and one end of connecting shaft is equipped with round hole, and connecting chain passes through the round hole in one end of connecting shaft, and the magnetic switch subassembly is equipped with magnetic switch subassembly. A magnet assembly is fixedly mounted at one end of the connecting shaft, and a magnetic switch assembly is fixedly mounted on the outer surface of one side of the mounting plate. According to the roller rod breakage alarm device for the roller kiln, in the operation process of a roller rod in the roller kiln, the roller rod drives the connecting shaft to rotate, the magnet assembly rotates along with the connecting shaft and drives the magnet to rotate, the magnet periodically triggers the proximity switch to generate signals, the frequency of the signals received by the proximity switch is accurately judged through the alarm system, and the breakage of the roller rod is avoided. When the proximity switch cannot receive the signal for a long time or receives the signal all the time, whether the roller is broken or not can be judged.

Description

Technical Field

[0001] The utility model relates to the technical field of roller kilns, in particular to a roller bar break alarm device used in roller kilns. Background Art

[0002] The roller kiln belongs to the tunnel kiln. The roller of the roller kiln is composed of rollers arranged in parallel and crossing the cross section of the kiln working channel. The products can be placed directly on the rollers or on the pads. The transmission system rotates the rollers, so that the products are transported into the kiln as the rollers rotate, and the firing process is completed in the kiln.

[0003] There are more and more roller kilns in the lithium battery industry. Due to the long firing cycle of lithium battery materials, the kiln length is relatively short, generally around 40 meters. The conveying speed of the silicon carbide rollers used is relatively slow, and the rotation of the rollers is also very slow. It is difficult for kiln employees to judge the rotation of the rollers by observing them with the naked eye during regular inspections. Therefore, once a broken rod occurs, it will be difficult to quickly and accurately detect the location of the broken rod, which can easily cause kiln blockage accidents and bring great safety hazards to production. Utility Model Content

[0004] The utility model aims to provide a roller rod break alarm device for a roller kiln, so as to solve the problem in the above background technology that broken rollers cannot be detected quickly and accurately.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a roller rod broken alarm device for a roller kiln, comprising a mounting plate, a connecting shaft, a connecting chain, a magnet assembly and a magnetic switch assembly, the outer surface of the mounting plate is penetrated by the connecting shaft, and a circular hole is provided at one end of the connecting shaft, and a connecting chain is passed through the circular hole at one end of the connecting shaft, a magnet assembly is fixedly installed at one end of the connecting shaft, and a magnetic switch assembly is fixedly installed on the outer surface of one side of the mounting plate.

[0006] Preferably, a connecting clip is inserted into one end of the connecting chain, and the connecting clip is snap-connected to the roller rod.

[0007] By adopting the above technical solution, the roller rod can be conveniently connected via the connecting clip.

[0008] Preferably, a bearing is fixedly mounted on the outer surface of the connecting shaft, and the bearing is snap-fitted and mounted inside the mounting plate.

[0009] By adopting the above technical solution, the friction between the connecting shaft and the mounting plate can be reduced through the bearing, and at the same time, the inner and outer rings of the bearing are always in contact with the rolling elements through the pulling force of the connecting shaft, so that the connecting shaft is always located at the center point.

[0010] Preferably, a positioning retaining ring is embedded and installed on the outer surface of one end of the mounting plate, and the outer surface of the positioning retaining ring is penetrated by the connecting shaft.

[0011] By adopting the above technical solution, the positioning retaining ring can be taken out from the side surface of the mounting plate, and the bearing can be easily replaced.

[0012] Preferably, a groove is provided at one end of the connecting shaft away from the connecting chain, and the groove on the outer surface of the connecting shaft is snap-fittedly connected to the anti-sliding block.

[0013] By adopting the above technical solution, the anti-sliding block is engaged with the connecting shaft to prevent the screws of the magnet assembly connected to the connecting shaft from loosening when the connecting shaft rotates, so that the magnet is always in contact with the proximity switch, causing a false alarm of roller breakage.

[0014] Preferably, a slide groove is provided on the outer surface of the side close to the magnetic switch assembly, and the magnetic switch assembly is fixed to the mounting plate by means of positioning screws.

[0015] By adopting the above technical solution, the height of the proximity switch can be adjusted by adjusting the magnetic switch assembly, so that the proximity switch is triggered when the magnet passes by.

[0016] Preferably, an anti-sliding block is fixedly provided on one side of the magnet assembly close to the mounting plate, and a magnet is fixedly mounted on the outer surface of one end of the magnet assembly.

[0017] By adopting the above technical solution, the connecting shaft is driven to rotate by the rotation of the roller, so that the magnet assembly rotates accordingly, and the magnet triggers the proximity switch once every period of time.

[0018] Preferably, a limiting cylindrical pin is provided on one side outer surface of the magnetic switch assembly, and the limiting cylindrical pin is slidably installed inside the slide groove.

[0019] By adopting the above technical solution, the height of the magnetic switch assembly can be limited by the limiting cylindrical pin, and at the same time, the magnetic switch assembly can be prevented from rotating, causing the proximity switch to be unable to detect the magnet.

[0020] Preferably, a proximity switch is fixedly mounted on the outer surface of the magnetic switch assembly, and the proximity switch and the magnetic switch assembly are fixed by fixing screws.

[0021] By adopting the above technical solution, the depth of the proximity switch is adjusted through the waist-shaped hole at one end of the proximity switch and then fixed, so as to prevent the proximity switch from moving on the magnetic switch assembly.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the roller rod breakage alarm device for roller kiln:

[0023] 1. During the operation of the roller in the roller kiln, the roller drives the connecting shaft to rotate, causing the magnet assembly to rotate with it, and the magnet to rotate, causing the magnet to periodically trigger the proximity switch to generate a signal. The alarm system accurately judges the frequency of the signal received by the proximity switch. When the proximity switch does not receive a signal for a long time, or receives a signal all the time, it can be judged whether the roller is broken;

[0024] 2. Due to the long length of the roller kiln and the large number of rollers in the roller kiln, the screws at the connection between the magnet assembly and the connecting shaft may loosen after being used for a period of time. The anti-sliding block can be used to fix the magnet assembly in the connecting shaft to prevent the magnet assembly from pointing downward when the connecting shaft rotates, causing false alarms;

[0025] 3. The magnetic switch assembly is fixed to the side of the mounting plate by the limiting cylindrical pin, so that the magnetic switch assembly can slide on the mounting plate when the positioning screw is loosened, which is convenient for adjusting the height of the proximity switch without adjusting the angle of the magnetic switch assembly and preventing the magnetic switch assembly from being knocked out of position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional structural diagram of the roller break alarm device of the utility model;

[0027] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the mounting plate and the positioning retaining ring of the utility model;

[0028] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the mounting plate and magnetic switch assembly of the utility model;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation plate, bearing and positioning retaining ring of the utility model;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the installation plate of the utility model in a side axial section;

[0031] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the mounting plate and the slide groove of the utility model.

[0032] In the figure: 1. Mounting plate; 2. Connecting shaft; 3. Connecting chain; 4. Connecting retaining ring; 5. Bearing; 6. Positioning retaining ring; 7. Magnet assembly; 8. Anti-sliding block; 9. Magnet; 10. Magnetic switch assembly; 11. Limit cylindrical pin; 12. Positioning screw; 13. Slide; 14. Proximity switch; 15. Fixing screw. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-6 The utility model provides a technical solution: a roller rod broken alarm device for a roller kiln, comprising a mounting plate 1, a connecting shaft 2, a connecting chain 3, a connecting clip 4, a bearing 5, a positioning retaining ring 6, a magnet assembly 7, an anti-sliding block 8, a magnet 9, a magnetic switch assembly 10, a limiting cylindrical pin 11, a positioning screw 12, a slide groove 13, a proximity switch 14 and a fixing screw 15. The outer surface of the mounting plate 1 is penetrated by the connecting shaft 2, and a round hole is provided at one end of the connecting shaft 2, and a connecting chain 3 is passed through the round hole at one end of the connecting shaft 2. A bearing 5 is fixedly installed on the outer surface of the connecting shaft 2, and the bearing 5 is clamped and installed inside the mounting plate 1. A connecting clip 4 is inserted at one end of the connecting chain 3, and the connecting clip 4 is clamped and connected to the roller rod. When the roller rod in the roller kiln rotates, the roller rod will drive the connecting clip 4 to rotate, and the rotation of the connecting clip 4 will drive the connecting chain 3 to rotate, so that the connecting chain 3 drives the connecting shaft 2 to rotate slowly, drives the magnet assembly 7 to rotate, and detects the rotation of the roller rod.

[0035] A positioning retaining ring 6 is inlaid on the outer surface of one end of the mounting plate 1, and the outer surface of the positioning retaining ring 6 is penetrated by the connecting shaft 2. A positioning retaining ring 6 is inlaid on the outer surface of one end of the mounting plate 1, and the outer surface of the positioning retaining ring 6 is penetrated by the connecting shaft 2. Through the connection between the bearing 5, the mounting plate 1 and the connecting shaft 2, the friction force of the connecting shaft 2 is reduced when the connecting shaft 2 rotates inside the mounting plate 1, making the connecting shaft 2 rotate more easily. At the same time, the inner and outer rings of the bearing 5 and the rolling elements can be pulled closer by the pulling force of the connecting chain 3 and the connecting retaining ring 4 on the connecting shaft 2, reducing the gap between the parts in the bearing 5 and keeping the connecting shaft 2 in the center. At the same time, the bearing 5 and the connecting shaft 2 can be inspected and replaced by the positioning retaining ring 6, reducing the friction force when the connecting shaft 2 rotates, and the bearing 5 can be easily replaced.

[0036] A magnet assembly 7 is fixedly installed at one end of the connecting shaft 2, an anti-sliding block 8 is fixedly opened on the side of the magnet assembly 7 close to the mounting plate 1, and a magnet 9 is fixedly installed on the outer surface of one end of the magnet assembly 7, a groove is opened at the end of the connecting shaft 2 away from the connecting chain 3, and the groove on the outer surface of the connecting shaft 2 is snap-fitted with the anti-sliding block 8. The magnet assembly 7 can be fixed to one end of the connecting shaft 2 through the anti-sliding block 8 on one side of the magnet assembly 7 to prevent the screws between the connecting shaft 2 and the magnet assembly 7 from loosening due to vibration and the like after long-term use, so that the magnet assembly 7 is always facing the lower end and does not rotate with the connecting shaft 2, causing the magnet 9 to always trigger the proximity switch 14, thereby causing a false alarm.

[0037] A magnetic switch assembly 10 is fixedly mounted on the outer surface of one side of the mounting plate 1. A limiting cylindrical pin 11 is provided on the outer surface of one side of the magnetic switch assembly 10, and the limiting cylindrical pin 11 is slidably mounted inside the slide groove 13. A slide groove 13 is provided on the outer surface close to the side of the magnetic switch assembly 10, and the magnetic switch assembly 10 and the mounting plate 1 are fixed by a positioning screw 12. When the magnet assembly 7 rotates around the connecting shaft 2, the magnet 9 cannot trigger the proximity switch 14. At this time, the position of the magnetic switch assembly 10 can be adjusted and the positioning screw 12 can be loosened to allow the limiting cylindrical pin 11 to move in the slide groove 13. The limiting cylindrical pin 11 and the slide groove 13 can limit the magnetic switch assembly 10 to prevent the magnetic switch assembly 10 from being excessively raised, causing a collision between the magnet assembly 7 and the proximity switch 14, and can also limit the left and right rotation of the magnetic switch assembly 10.

[0038] A proximity switch 14 is fixedly installed on the outer surface of the magnetic switch assembly 10, and the proximity switch 14 and the magnetic switch assembly 10 are fixed by a fixing screw 15. When the height adjustment is completed, the position of the proximity switch 14 can be adjusted by the fixing screw 15, so that the sensor of the proximity switch 14 is directly under the magnet 9, so that the proximity switch 14 can detect the passage of the magnet 9, thereby triggering a signal.

[0039] When the roller in the roller kiln is broken, the roller cannot drive the connecting shaft 2 to rotate, so that the proximity switch 14 is always triggered by the magnet 9, or the proximity switch 14 cannot receive the signal triggered by the rotation of the magnet 9 for a long time. Since the proximity switch 14 does not periodically release the signal, the alarm system will make a judgment at this time to remind the workers that the roller is broken.

[0040] 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 roller bar break alarm device for a roller kiln, comprising a mounting plate (1), a connecting shaft (2), a connecting chain (3), a magnet assembly (7), and a magnetic switch assembly (10), characterized in that: The outer surface of the mounting plate (1) is penetrated by a connecting shaft (2), and a circular hole is provided at one end of the connecting shaft (2), and a connecting chain (3) is passed through the circular hole at one end of the connecting shaft (2), a magnet assembly (7) is fixedly mounted at one end of the connecting shaft (2), and a magnetic switch assembly (10) is fixedly mounted on the outer surface of one side of the mounting plate (1).

2. The roller rod breakage alarm device for a roller kiln according to claim 1, characterized in that: A connecting clip (4) is inserted into one end of the connecting chain (3), and the connecting clip (4) is connected to the roller rod in a snap-fitting manner.

3. The roller rod breakage alarm device for a roller kiln according to claim 1, characterized in that: A bearing (5) is fixedly mounted on the outer surface of the connecting shaft (2), and the bearing (5) is snap-fitted and mounted inside the mounting plate (1).

4. The roller rod breakage alarm device for a roller kiln according to claim 1, characterized in that: A positioning retaining ring (6) is embedded and installed on the outer surface of one end of the mounting plate (1), and the outer surface of the positioning retaining ring (6) is penetrated by the connecting shaft (2).

5. The roller bar breakage alarm device for a roller kiln according to claim 1, characterized in that: A groove is provided at one end of the connecting shaft (2) away from the connecting chain (3), and the groove on the outer surface of the connecting shaft (2) is snap-fitted with the anti-sliding block (8).

6. The roller bar breakage alarm device for a roller kiln according to claim 1, characterized in that: A sliding groove (13) is provided on the outer surface of one side close to the magnetic switch assembly (10), and the magnetic switch assembly (10) and the mounting plate (1) are fixed by means of positioning screws (12).

7. The roller bar breakage alarm device for a roller kiln according to claim 1, characterized in that: An anti-sliding block (8) is fixedly provided on one side of the magnet assembly (7) close to the mounting plate (1), and a magnet (9) is fixedly installed on the outer surface of one end of the magnet assembly (7).

8. The roller rod breakage alarm device for a roller kiln according to claim 1, characterized in that: A limiting cylindrical pin (11) is provided on one outer surface of the magnetic switch assembly (10), and the limiting cylindrical pin (11) is slidably mounted inside the slide groove (13).

9. The roller rod breakage alarm device for a roller kiln according to claim 1, characterized in that: A proximity switch (14) is fixedly mounted on the outer surface of the magnetic switch assembly (10), and the proximity switch (14) and the magnetic switch assembly (10) are fixed by means of fixing screws (15).

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