Broken rod detection mechanism for roller rod of roller bed furnace

Abstract

The utility model relates to the technical field of roller furnaces, in particular to a roller furnace roller rod breakage detection mechanism, which comprises a driven conductive part and a driving conductive part which are arranged at the tail part of a roller rod and are respectively connected with a detection device. The active conductive part comprises a supporting conductive part, a switch part is arranged at one end, close to the passive conductive part, of the supporting conductive part, extends to the position above the tail of the roller rod, is arranged up and down with the tail end of the roller rod, and is partially overlapped and not in contact with the tail end of the roller rod; the broken tail end of the roller is upwarped and pushed, so that the switch part moves upwards to be connected with the passive conductive piece; therefore, the detection device, the passive conductive member and the active conductive member are connected in series and electrically communicated to form a detection alarm loop. According to the utility model, a detection loop is formed among the passive conductive member, the active conductive member and the detection device to give an alarm. The broken rod can be automatically identified, the specific position of the broken rod can be quickly found and positioned when the roller rod is broken, and the equipment fault diagnosis efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of roller furnaces, in particular to a roller furnace roller bar breakage detection mechanism. Background Art

[0002] Roller (sintering) furnaces are mainly used for high-temperature heat treatment and are widely used in the production processes of ceramics, metallurgy, glass, batteries and magnetic materials.

[0003] Inside the roller furnace, several parallel rollers rotate synchronously in the same direction to convey the products. Although the materials used for the rollers are getting better and better, and the indicators of hardness and toughness are getting higher and higher, roller breakage still occurs from time to time. If the roller breaks during the operation of the equipment and cannot be discovered and eliminated in time, the products are likely to get stuck and accumulate at the break, resulting in product scrapping and accident losses.

[0004] In the prior art, the conventional detection method is manual inspection and visual inspection. However, when the roller furnace is in operation, the internal high temperature environment makes it inconvenient to inspect, and the product transmission blocks the rollers at the bottom, affecting the inspection. Stopping the machine for inspection will affect the production progress, and the inspection effect is greatly affected by the inspector's experience, skills, degree of attention and other factors. Therefore, manual inspection is inconvenient and has low reliability.

[0005] Compared with manual inspections, online monitoring using automatic detection devices such as infrared photoelectric or gratings has a high degree of automation, improved reliability and detection effects. However, the high-temperature seal inside the roller furnace easily produces pollutants, which interfere with the photoelectric equipment and affect the detection accuracy. During photoelectric detection, light is transmitted from the transmitting end to the reflecting end, and it can only be known that a roller rod in the furnace is broken, but the specific location of the broken rod cannot be distinguished. The reliability of detection still has room for improvement.

[0006] Based on the problems in the prior art, the utility model provides a roller furnace roller bar breakage detection mechanism. Utility Model Content

[0007] The utility model aims to provide a roller furnace roller broken rod detection mechanism to solve the technical problem that the broken rod detection method in the prior art is difficult to quickly and accurately locate the specific position of the broken rod.

[0008] The technical solution of the utility model is as follows: A broken roller bar detection mechanism for a roller hearth furnace, which includes a passive conductive part and an active conductive part installed at the tail of the roller bar. The passive conductive part and the active conductive part are respectively connected to a detection device; the active conductive part includes a supporting conductive part, which is fixedly arranged and keeps a distance from the tail of the roller bar without contact. At one end of the supporting conductive part close to the passive conductive part, there is a switch part, which extends above the tail of the roller bar and is arranged vertically and partially overlapped with the tail end of the roller bar without contact; the tail end of the broken roller bar warps upward to push the switch part upward until it is connected to the passive conductive part; so that the detection device, the passive conductive part and the active conductive part are connected in series and electrically connected to form a detection and alarm circuit.

[0009] Preferably, the switch part is set as a flexible horizontal part. Under the pushing action of the broken bar at the bottom, the flexible horizontal part deforms and bends upward and contacts and connects with the passive conductive part to form a detection and alarm circuit.

[0010] Preferably, the supporting conductive part is set as a conductive telescopic column, and the switch part is set as a fixed horizontal part. The fixed horizontal part moves upward until it is connected to the passive conductive part under the pushing force to form a detection and alarm circuit, and the supporting conductive part extends upward to adapt to the upward movement of the switch part.

[0011] Preferably, the passive conductive part is integrally L-shaped, including a vertically suspended fixed conductive part and a horizontally arranged baffle. The baffle extends horizontally above the switch part and is arranged vertically and partially overlapped with the switch part without contact.

[0012] Preferably, the passive conductive part and the active conductive part corresponding to the same roller bar are connected by wires to the same channel connection port of the detection device.

[0013] Compared with the prior art, the advantages of the utility model are as follows:

[0014] (1) The utility model forms a separate broken bar detection mechanism for each roller bar of the roller hearth furnace. The broken bar detection mechanism includes an active conductive part and a passive conductive part arranged at the tail of the roller bar and connected by wires to the detection device. The switch part of the active part moves upward under the pushing action of the warped end of the broken bar at the bottom and contacts and connects with the passive conductive part to form a detection circuit between the passive conductive part, the active conductive part and the detection device, and issues an alarm.

[0015] It can automatically identify a broken bar. Each roller bar corresponds to a channel of the detection device, which is convenient for quickly finding and quickly positioning the specific position of the broken bar when a roller bar breaks, and improving the efficiency of equipment fault diagnosis.

[0016] (2) Whenever a roller bar breaks, the detection and alarm circuit is turned on, an alarm signal is output, and the broken bar information is visualized, which is convenient for observation and reduces the workload of equipment personnel. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 This is an overall schematic diagram of the broken rod detection mechanism of the present utility model arranged at the tail of the roller rod of the roller hearth furnace;

[0019] Figure 2 This is a schematic diagram of the first embodiment of the detection mechanism under the normal operating state of the roller rod of the present utility model;

[0020] Figure 3 This is a schematic diagram of the first embodiment of the detection mechanism under the broken state of the roller rod of the present utility model;

[0021] Figure 4 This is a schematic diagram of the second embodiment of the detection mechanism under the normal operating state of the roller rod of the present utility model;

[0022] Figure 5 This is a schematic diagram of the second embodiment of the detection mechanism under the broken state of the roller rod of the present utility model;

[0023] Wherein: 1. Switch part; 2. Support conductive part; 3. Baffle; 4. Fixed conductive part; 5. Detection device; 6. Roller rod; 7. Wire; 8. Water-cooled section furnace frame; 11. Flexible horizontal part; 12. Fixed horizontal part; 21. Fixed conductive column; 22. Conductive telescopic column. Specific embodiments

[0024] The following will further elaborate on the content of the present utility model in conjunction with specific embodiments:

[0025] For ease of understanding, first, the application scenario of this application is described. Inside the roller hearth furnace, the products are conveyed by the synchronous and co-rotating of several roller rods in parallel. Referring to the attached Figure 1 , during the operation of the equipment, if the roller rod breaks and cannot be detected and eliminated in time, the products are likely to get stuck and accumulate at the break, resulting in product scrapping and accident losses.

[0026] The roller rod 6 is horizontally installed with installations at both ends. Usually, the roller rod breaks from the middle position. In the broken state, the rod body near the middle of the rod rotates downward, while both ends rotate upward. Therefore, the present utility model sets a detection mechanism at the tail of each roller rod. When the roller rod breaks, it triggers the formation of a detection alarm circuit inside the detection mechanism, automatically identifies the broken rod, and quickly locks the position of the broken rod, improving the diagnostic efficiency of the broken rod fault.

[0027] Such as Figure 2As shown in the figure, a detection mechanism for broken roller rods of a roller hearth furnace includes a passive conductive part and an active conductive part installed at the tail of the roller rod 6. The passive conductive part and the active conductive part are respectively connected to the detection device 5 through wires 7. When the roller rod is in normal operation, the passive conductive part and the active conductive part are not connected in series, and the detection alarm circuit is open. The detection device 5 adopts a signal display device with multiple channels such as an oscilloscope, a PLC controller, an industrial computer controller, etc.

[0028] The passive conductive part is L-shaped and is integrally arranged above the tail of the roller rod 6, including a fixed conductive part 4 suspended vertically and a baffle 3 fixed at the bottom of the fixed conductive part 4. The baffle 3 can be fixedly and integrally connected or detachably connected to the fixed conductive part 4.

[0029] The active conductive part is integrally L-shaped and is semi-surroundingly installed at the tail of the roller rod 6. Specifically, the active conductive part includes a fixedly installed support conductive part 2 and a switch part 1. The support conductive part 2 is vertically arranged and keeps a distance from the tail of the roller rod 6 without contact. The switch part 1 is fixedly installed at one end of the support conductive part 2 close to the upper baffle 3. The switch part 1 extends above the tail of the roller rod 6 and is arranged vertically with the tail of the roller rod 6 and partially overlaps without contact; Refer to the appendix Figure 2 The baffle 3 horizontally extends above the switch part 1 and is arranged vertically with the switch part 1 and partially overlaps without contact.

[0030] The upturned end of the broken roller rod 6 pushes the switch part 1 upward to connect with the baffle 3. The top end of the fixed conductive part 4 is connected to the detection device 5 through a wire 7, and the bottom end of the support conductive part 2 is connected to the detection device 5 through a wire 7, so that the detection device 5, the fixed conductive part 4, the baffle 3, the switch part 1, and the support conductive part 2 are connected in series and electrically conduct to form a detection alarm circuit.

[0031] The support conductive part 2 and the fixed conductive part 4 surround the end of the roller rod and are fixed inside the roller hearth furnace, such as on the water-cooled section furnace frame 8.

[0032] In one embodiment, refer to the appendix Figure 2 When the roller rod 6 is in normal operation, the support conductive part 2 is a fixed conductive column 21, and the switch part 1 is specifically a flexible horizontal part 11, which is made of a flexible conductive material and can be deformed by force. When the roller rod 6 is in a broken state, as shown in the appendix Figure 3 As shown, under the pushing action of the broken rod at the bottom, the switch part 1 bends upward and contacts and connects with the baffle 3, and then the detection alarm circuit is conducted.

[0033] Among them, the flexible horizontal part 11 can be a metal wire or metal sheet structure. For example, it can be a conductive rubber strip / sheet, a metal foil sheet, a steel wire rope / sheet.

[0034] In another embodiment, refer to the appendix Figure 4, under the normal operation state of the roller rod 6, the supporting conductive part 2 is specifically the conductive telescopic column 22, and the switch part 1 is specifically the fixed horizontal part 12, which is fixed on the top of the conductive telescopic column 22. When the roller rod 6 breaks, as shown in the attached Figure 5 figure, the broken rod end tilts upwards, pushing the switch part 1 to move upwards. Under the action of the pushing force, the supporting conductive part 2 extends upwards to adapt to the upward movement of the switch part 1 until the switch part 1 contacts the baffle 3, conducting the detection and alarm circuit.

[0035] Among them, the conductive telescopic column 22 can be a metal telescopic rod or a metal spring structure.

[0036] The passive conductive part and the active conductive part corresponding to the same roller rod 6 are connected to the same channel wiring port of the detection device 5 through a wire 7. In this way, a separate broken rod detection mechanism is formed for each roller rod of the roller hearth furnace, automatically identifying the broken rod. Each roller rod corresponds to a channel of the detection device 5, which is convenient for quickly finding and rapidly positioning the broken rod position (that is, specifically which roller rod breaks) when a roller rod breaks, greatly improving the equipment fault diagnosis efficiency. Whenever a roller rod breaks, the detection and alarm circuit is conducted, outputting an alarm signal, visualizing the broken rod information, facilitating observation, and reducing the workload of equipment personnel.

[0037] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, obviously the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A roller rod breakage detection mechanism for a roller hearth furnace, characterized in that, It comprises a passive conductive part and an active conductive part installed at the tail of the roller, and the passive conductive part and the active conductive part are respectively connected to the detection device; The active conductive member comprises a supporting conductive part, which is fixedly arranged and keeps a distance from the tail of the roller without contacting it. A switch part is arranged at one end of the supporting conductive part close to the passive conductive member, and the switch part extends above the tail of the roller and is arranged up and down with the tail of the roller and partially overlaps and does not contact it. The tail end of the broken roller rod tilts upward to push the switch part to move upward until it is connected with the passive conductive part; so that the detection device, the passive conductive part and the active conductive part are connected in series and electrically connected to form a detection alarm circuit.

2. The roller rod breakage detection mechanism of the roller hearth furnace according to claim 1, characterized in that, The switch part is configured as a flexible horizontal member. Under the pushing action of the broken rod at the bottom, the flexible horizontal member is deformed and bent upward, and is in contact and connected with the passive conductive member to form the detection alarm circuit.

3. The roller rod breakage detection mechanism of the roller hearth furnace according to claim 1, characterized in that The supporting conductive part is configured as a conductive telescopic column, and the switch part is configured as a fixed horizontal piece. The fixed horizontal piece moves upward under the action of the top thrust until it is connected with the passive conductive piece to form the detection alarm circuit. The supporting conductive part extends upward to accommodate the upward movement of the switch part.

4. The roller rod breakage detection mechanism of the roller hearth furnace according to claim 1, characterized in that, The passive conductive part is L-shaped as a whole, with a vertically suspended fixed conductive part and a transversely arranged baffle, the baffle extending horizontally and arranged above the switch part, and partially overlapping and not contacting the switch part.

5. The roller rod breakage detection mechanism of the roller hearth furnace according to claim 1, characterized in that, The passive conductive part and the active conductive part corresponding to the same roller are connected by wires to the same channel wiring port of the detection device.

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