Magnesia carbon brick hardness detection device

Abstract

The utility model relates to the technical field of magnesia carbon brick production, in particular to a magnesia carbon brick hardness detection device which comprises a device rack, a convex detection table is movably mounted on the top surface of the device rack through a lead screw transmission mechanism, the convex detection table is matched with a magnesia carbon brick detection supporting plate, and a detection mechanism is arranged at the top of the convex detection table. The detection mechanism comprises a fixed seat fixedly mounted at the top of the device rack through an L-shaped mounting seat, an automatic detection assembly is arranged at the bottom of the fixed seat and comprises a lifting seat movably mounted at the bottom of the fixed seat through an electric telescopic rod for lifting, and a Leeb hardness detection impact device is mounted in the lifting seat in a penetrating manner; the whole device adopts an automatic hardness detection process, the detection efficiency can be remarkably improved, the time and the cost of manual operation are reduced, and the accuracy and the reliability of a detection result can be ensured by detecting the hardness of the magnesia carbon brick by adopting a Leeb hardness detection method, so that the wear resistance of the magnesia carbon brick is better evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesia-carbon brick production, in particular to a magnesia-carbon brick hardness detection device. Background Art

[0002] Magnesia carbon brick is a composite refractory material, mainly made of high melting point basic oxide magnesium oxide and high melting point carbon material that is difficult to be wetted by slag as raw materials, adding various non-oxide additives and combining them with carbon binder. This material is mainly used for the lining of converters, AC arc furnaces, DC arc furnaces and slag lines of ladles. Magnesia carbon brick effectively utilizes the strong slag erosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, compensating for the biggest disadvantage of magnesia, which is poor spalling resistance.

[0003] For magnesia carbon bricks, hardness testing is directly related to their durability and service life in practical applications. Magnesia carbon bricks with high hardness can better resist wear in high temperature and high wear environments, thereby ensuring their long-term stable operation in the furnace, reducing replacement frequency and reducing production costs.

[0004] At present, the hardness test method of magnesia carbon bricks mainly uses Leeb hardness tester for measurement, which requires manual operation. When faced with the hardness test of a large number of magnesia carbon brick samples, it is obvious that this manual operation test method will waste a lot of time, which not only leads to low test efficiency, but also makes the entire test cost high. Utility Model Content

[0005] The purpose of the present utility model is to provide a magnesia-carbon brick hardness detection device, which can realize the automatic detection of magnesia-carbon bricks through the design of the device frame, screw transmission mechanism, convex detection platform and detection mechanism, significantly improve the detection efficiency, reduce the time and cost of manual operation, and solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A magnesia-carbon brick hardness testing device comprises a device frame, a convex testing platform is movably mounted on the top surface of the device frame through a screw transmission mechanism, the convex testing platform is adapted to be equipped with a magnesia-carbon brick testing support plate, a testing mechanism is provided on the top of the convex testing platform, the testing mechanism comprises a fixed seat fixedly mounted on the top of the device frame through an L-shaped mounting seat, an automatic testing component is provided at the bottom of the fixed seat, the automatic testing component comprises a lifting seat movably mounted on the bottom of the fixed seat through an electric telescopic rod for lifting, a Leeb hardness testing impact device is installed through the interior of the lifting seat, an inverted U-shaped frame is fixedly mounted on the top surface of the lifting seat near the hardness testing impact device, and a loading sleeve trigger and a release button trigger are movably mounted on the inner top surface of the inverted U-shaped frame through multiple sets of triggering electric telescopic rods.

[0008] As a preferred solution of the present invention, a support ring is fixedly installed at the bottom end of the Leeb hardness detection impact device, a coil is sleeved on the outer surface of the Leeb hardness detection impact device near the support ring, a loading sleeve is slidably installed on the outer surface of the Leeb hardness detection impact device near the top of the coil, a trigger seat is sleeved on the outer surface of the loading sleeve, and a release button is movably installed on the top of the Leeb hardness detection impact device, the loading sleeve trigger corresponds to the trigger seat, and the release button trigger corresponds to the release button.

[0009] As a preferred solution of the present invention, the L-shaped mounting seat and the device frame are fixedly connected by fixing bolts, and a Leeb hardness detection host is fixedly installed on a side of the L-shaped mounting seat away from the device frame, and the Leeb hardness detection host is electrically connected to the coil.

[0010] As a preferred solution of the present invention, a side seat is fixedly installed on the top surface of the convex detection platform away from the side of the magnesia carbon brick detection support plate, and a pushing frame is movably installed on the side of the side seat close to the magnesia carbon brick detection support plate through a pushing electric telescopic rod.

[0011] As a preferred solution of the present invention, limit sliders are fixedly installed at both ends of the bottom of the pushing rack, and a limit slot corresponding to the limit slider is opened on the top surface of the convex detection platform, and the limit slot and the limit slider are slidably connected.

[0012] As a preferred solution of the present invention, the screw transmission mechanism includes a supporting end and a fixed end fixedly installed on the top surface of the device frame near both ends, a screw assembly is movably installed at the center between the supporting end and the fixed end, and sliding rod assemblies are fixedly installed on both sides of the screw assembly between the supporting end and the fixed end, and the screw rod assembly and the sliding rod assembly pass through the interior of the convex detection table.

[0013] As a preferred solution of the present invention, a stepper motor is fixedly mounted on a side of the fixed end away from the supporting end through a motor seat, and the stepper motor and the end of the screw rod assembly close to the fixed end are fixedly connected through a coupling.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the utility model, the automatic detection of magnesia carbon bricks can be realized by the design of the device frame, the screw transmission mechanism, the convex detection platform and the detection mechanism, which significantly improves the detection efficiency and reduces the time and cost of manual operation. The hardness of magnesia carbon bricks is detected by the Leeb hardness detection method, which can ensure the accuracy and reliability of the test results, thereby better evaluating the wear resistance of magnesia carbon bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the screw transmission mechanism in the present utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the convex detection platform in the present utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection mechanism in the present utility model;

[0020] Figure 5 This is a schematic diagram of the disassembled three-dimensional structure of the automatic detection component in the present utility model.

[0021] In the figure: 1. Device frame; 2. Screw drive mechanism; 21. Support end; 22. Fixed end; 23. Screw assembly; 24. Slide assembly; 25. Motor seat; 26. Stepper motor; 27. Coupling; 3. Convex test table; 31. Magnesium carbon brick test support plate; 32. Side seat; 33. Electric telescopic rod for pushing; 34. Pushing frame; 35. Limiting slide; 4. Testing mechanism; 41. L-shaped mounting seat; 411. Fixing bolt; 412. Leeb hardness testing host; 42. Fixed seat; 43. Automatic testing component; 431. Electric telescopic rod for lifting; 432. Lifting seat; 433. Impact device for Leeb hardness testing; 4331. Support ring; 4332. Coil; 4333. Loading sleeve; 4334. Trigger seat; 4335. Release button; 434. Inverted U-shaped frame; 4341. Electric telescopic rod for triggering; 4342. Loading sleeve trigger; 4343. Release button trigger. DETAILED DESCRIPTION

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] The present invention provides a device for testing the hardness of magnesia-carbon bricks. The device frame, screw transmission mechanism, convex detection platform and detection mechanism are designed to realize automatic detection of magnesia-carbon bricks, significantly improve detection efficiency, reduce the time and cost of manual operation, and solve the problems raised in the above-mentioned background technology.

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] A magnesia-carbon brick hardness testing device comprises a device frame 1, a convex testing platform 3 is movably installed on the top surface of the device frame 1 through a screw transmission mechanism 2, the screw transmission mechanism 2 comprises a supporting end 21 and a fixed end 22 fixedly installed on the top surface of the device frame 1 near both ends, a screw assembly 23 is movably installed at the center between the supporting end 21 and the fixed end 22, a slide assembly 24 is fixedly installed on both sides near the screw assembly 23 between the supporting end 21 and the fixed end 22, the screw assembly 23 and the slide assembly 24 pass through the interior of the convex testing platform 3, a stepper motor 26 is fixedly installed on the side of the fixed end 22 away from the supporting end 21 through a motor seat 25, the stepper motor 26 and the end of the screw assembly 23 near the fixed end 22 are fixedly connected by a coupling 27, after the loading is completed, when the stepper motor 26 works, the screw assembly 23 is driven to rotate by the coupling 27, at this time, under the action of the screw assembly 23, the convex testing platform 3 slides on the slide assembly 24 for automatic displacement, thereby realizing automatic inspection.

[0027] A detection mechanism 4 is provided on the top of the convex detection platform 3.

[0028] Among them, the detection mechanism 4 includes a fixed base 42 fixedly mounted on the top of the device frame 1 through an L-shaped mounting base 41, the L-shaped mounting base 41 and the device frame 1 are fixedly connected by fixing bolts 411, and a Leeb hardness detection host 412 is fixedly mounted on the side of the L-shaped mounting base 41 away from the device frame 1. An automatic detection component 43 is provided at the bottom of the fixed base 42, and the automatic detection component 43 includes a lifting base 432 movably mounted on the bottom of the fixed base 42 through an electric telescopic rod 431 for lifting. A Leeb hardness detection impact device 433 is installed inside the lifting base 432, and a support ring 4331 is fixedly mounted on the bottom of the Leeb hardness detection impact device 433. The outer surface of the Leeb hardness detection impact device 433 is close to the support ring 43 31 is provided with a coil 4332, the Leeb hardness testing host 412 and the coil 4332 are electrically connected, the outer surface of the Leeb hardness testing impact device 433 is slidably installed with a loading sleeve 4333 near the top of the coil 4332, the outer surface of the loading sleeve 4333 is provided with a trigger seat 4334, and the top of the Leeb hardness testing impact device 433 is movably installed with a release button 4335, the top surface of the lifting seat 432 is fixedly provided with an inverted U-shaped frame 434 near the hardness testing impact device 433, the inner top surface of the inverted U-shaped frame 434 is movably provided with a loading sleeve trigger 4342 and a release button trigger 4343 through multiple sets of triggering electric telescopic rods 4341, the loading sleeve trigger 4342 and the trigger seat 4334 and the release button trigger 4343 The button trigger 4343 corresponds to the release button 4335. When the convex detection platform 3 automatically moves to the top center of the Leeb hardness detection impact device 433, the stepper motor 26 stops working. At this time, the electric telescopic rod 431 for lifting works to expand downward. Under its action, the lifting seat 432 continues to descend until the support ring 4331 is in contact with the top surface of the magnesia-carbon brick. Then, the triggering electric telescopic rod 4341 acting on the loading sleeve trigger 4342 works to expand downward. Under its action, the loading sleeve trigger 4342 continues to descend and drives the loading sleeve 4333 to slide downward through the trigger seat 4334 to complete automatic loading. Then, the loading sleeve trigger 4342 automatically resets, and then acts on the trigger of the release button trigger 4343. The electric telescopic rod 4341 is deployed downward, and under its action, the release button trigger 4343 triggers the release button 4335 to achieve automatic release, and then the release button trigger 4343 automatically resets. An impact body with a certain mass is used to impact the surface of the magnesium carbon brick under a certain test force, and then the impact speed and rebound speed of the impact body 1 mm away from the surface of the magnesium carbon brick are measured. Through the electromagnetic principle, a voltage proportional to the speed is induced, thereby calculating the Leeb hardness value. Specifically, the Leeb hardness value is expressed as the ratio of the impact body rebound speed to the impact speed. The calculation formula is HL=1000×(VB / VA), where HL represents the Leeb hardness value, VB represents the impact body rebound speed, and VA represents the impact speed of the impact body.Using the Leeb hardness test method to test the hardness of magnesia carbon bricks can ensure the accuracy and reliability of the test results, thereby better evaluating the wear resistance of magnesia carbon bricks. After the test is completed, the lifting seat 432 is reset, and the stepper motor 26 continues to work. At this time, the magnesia carbon bricks that have completed the hardness test will be unloaded at the end away from the loading end. The entire process uses an automated hardness testing process, which can significantly improve the test efficiency and reduce the time and cost of manual operation.

[0029] In addition, in this embodiment, please refer to Figure 1 and Figure 3 The convex testing platform 3 is adapted to be equipped with a magnesia-carbon brick testing support plate 31. A side seat 32 is fixedly installed on the side of the top surface of the convex testing platform 3 away from the magnesia-carbon brick testing support plate 31. The side seat 32 is close to the side of the magnesia-carbon brick testing support plate 31 and is movably installed with a pushing rack 34 through a pushing electric telescopic rod 33. When loading, the external loading conveyor pushes the magnesia-carbon brick testing support plate 31 with the magnesia-carbon brick to be tested to the convex testing platform 3. When the automatic hardness test is completed, the convex testing platform 3 will automatically unload at the end away from the loading end, and the pushing electric telescopic rod 33 is used to push the magnesia-carbon brick testing support plate 31. The telescopic rod 33 is unfolded toward one end close to the magnesia-carbon brick detection support plate 31. At this time, under its action, the pushing rack 34 is automatically guided out from the inside of the side seat 32 and slides on the top surface of the convex detection platform 3 to push the magnesia-carbon brick detection support plate 31 until it enters the external unloading conveyor device. Then the pushing rack 34 is reset, and the convex detection platform 3 also automatically returns to its original position to continue the next round of magnesia-carbon brick hardness testing work, further improving the automation level of the overall device. The use of the convex detection platform 3 is conducive to the stability of the entire magnesia-carbon brick detection;

[0030] In addition, in this embodiment, please refer to Figure 3 , both ends of the bottom of the pushing rack 34 are fixedly installed with limit sliders, and the top surface of the convex detection platform 3 is provided with a limit slide 35 corresponding to the limit slider. The limit slide 35 and the limit slider are slidably connected, and the design of the limit slide 35 and the limit slider can make the pushing process of the pushing rack 34 stable and reliable, and accurately unload the material;

[0031] It should be noted that the electric telescopic rod and the stepping motor are both existing technologies and will not be described in detail here.

[0032] In this embodiment, the implementation scenario is specifically as follows: when loading, the external loading conveyor pushes the magnesia carbon brick detection tray 31 on which the magnesia carbon bricks to be tested are placed to the convex detection platform 3, and then when the stepper motor 26 works, the screw assembly 23 is driven to rotate through the coupling 27. At this time, under the action of the screw assembly 23, the convex detection platform 3 slides on the slide assembly 24 for automatic displacement. When the convex detection platform 3 automatically moves to the top center of the Leeb hardness detection impact device 433, the stepper motor 26 stops working. At this time, the electric telescopic rod 431 for lifting works and unfolds downward. Under its action, the lifting seat 432 continues to descend until Until the support ring 4331 is in contact with the top surface of the magnesia carbon brick, the triggering electric telescopic rod 4341 acting on the loading sleeve trigger 4342 is expanded downward, and under its action, the loading sleeve trigger 4342 continues to descend, and drives the loading sleeve 4333 to slide downward through the trigger seat 4334 to complete the automatic loading, and then the loading sleeve trigger 4342 automatically resets, and then the triggering electric telescopic rod 4341 acting on the release button trigger 4343 is expanded downward, and under its action, the release button trigger 4343 triggers the release button 4335 to achieve automatic release, and then the release button trigger 4343 automatically resets. An impact body with a certain mass is used to impact the surface of the magnesium carbon brick under a certain test force, and then the impact velocity and rebound velocity of the impact body 1 mm away from the surface of the magnesium carbon brick are measured. Through the electromagnetic principle, a voltage proportional to the velocity is induced, thereby calculating the Leeb hardness value. Specifically, the Leeb hardness value is expressed as the ratio of the impact body rebound velocity to the impact velocity. The calculation formula is HL=1000×(VB / VA), where HL represents the Leeb hardness value, VB represents the impact body rebound velocity, and VA represents the impact velocity of the impact body. After the test is completed, the lifting seat 432 is reset, and the stepping motor 26 continues to work. At this time, the test is completed. After the hardness test, the magnesia carbon bricks will be unloaded at the end away from the loading end. When unloading, the electric telescopic rod 33 for pushing is extended to the end close to the magnesia carbon brick detection support plate 31. At this time, under its action, the pushing rack 34 is automatically derived from the inside of the side seat 32 and slides on the top surface of the convex detection platform 3 to push the magnesia carbon brick detection support plate 31 until it enters the external unloading conveyor. Then the pushing rack 34 is reset, and the convex detection platform 3 also automatically returns to its original position to continue the next round of magnesia carbon brick hardness testing. The entire process adopts an automated hardness testing process, which can significantly improve the testing efficiency and reduce the time and cost of manual operation.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnesia carbon brick hardness detection device, comprising a device frame (1), characterized in that: A convex detection platform (3) is movably mounted on the top surface of the device frame (1) through a screw transmission mechanism (2), and the convex detection platform (3) is adapted to be equipped with a magnesia carbon brick detection support plate (31). A detection mechanism (4) is provided on the top of the convex detection platform (3), and the detection mechanism (4) includes a fixed seat (42) fixedly mounted on the top of the device frame (1) through an L-shaped mounting seat (41), and an automatic detection component (43) is provided at the bottom of the fixed seat (42), and the automatic detection component (43) includes a lifting mechanism. An electric telescopic rod (431) is movably mounted on a lifting seat (432) at the bottom of a fixed seat (42); a Leeb hardness detection impact device (433) is installed inside the lifting seat (432); an inverted U-shaped frame (434) is fixedly mounted on the top surface of the lifting seat (432) near the hardness detection impact device (433); a loading sleeve trigger (4342) and a release button trigger (4343) are movably mounted on the inner top surface of the inverted U-shaped frame (434) via multiple groups of triggering electric telescopic rods (4341).

2. A magnesia-carbon brick hardness detection device according to claim 1, characterized in that: A support ring (4331) is fixedly installed at the bottom end of the Leeb hardness detection impact device (433); a coil (4332) is mounted on the outer surface of the Leeb hardness detection impact device (433) near the support ring (4331); a loading sleeve (4333) is slidably mounted on the outer surface of the Leeb hardness detection impact device (433) near the top of the coil (4332); a trigger seat (4334) is mounted on the outer surface of the loading sleeve (4333); a release button (4335) is movably mounted on the top of the Leeb hardness detection impact device (433); the loading sleeve trigger (4342) corresponds to the trigger seat (4334), and the release button trigger (4343) corresponds to the release button (4335).

3. The magnesia-carbon brick hardness detection device according to claim 1, characterized in that: The L-shaped mounting seat (41) and the device frame (1) are fixedly connected by fixing bolts (411); a Leeb hardness detection host (412) is fixedly mounted on a side of the L-shaped mounting seat (41) away from the device frame (1); and the Leeb hardness detection host (412) and the coil (4332) are electrically connected.

4. The magnesia-carbon brick hardness detection device according to claim 1, characterized in that: A side seat (32) is fixedly mounted on the top surface of the convex detection platform (3) at a side away from the magnesia-carbon brick detection support plate (31), and a pushing frame (34) is movably mounted on the side of the side seat (32) close to the magnesia-carbon brick detection support plate (31) via a pushing electric telescopic rod (33).

5. A magnesia-carbon brick hardness detection device according to claim 4, characterized in that: Limiting slide blocks are fixedly installed at both ends of the bottom of the pushing frame (34), and a limiting sliding groove (35) corresponding to the limiting sliding groove is opened on the top surface of the convex detection platform (3), and the limiting sliding groove (35) and the limiting sliding groove are slidably connected.

6. The magnesia-carbon brick hardness detection device according to claim 1, characterized in that: The screw transmission mechanism (2) includes a supporting end (21) and a fixed end (22) fixedly mounted on the top surface of the device frame (1) near both ends; a screw assembly (23) is movably mounted at the center between the supporting end (21) and the fixed end (22); and sliding rod assemblies (24) are fixedly mounted on both sides of the screw assembly (23) between the supporting end (21) and the fixed end (22); the screw assembly (23) and the sliding rod assembly (24) pass through the interior of the convex detection platform (3).

7. A magnesia-carbon brick hardness detection device according to claim 6, characterized in that: A stepper motor (26) is fixedly mounted on a side of the fixed end (22) away from the supporting end (21) via a motor base (25), and the stepper motor (26) and an end of the screw rod assembly (23) close to the fixed end (22) are fixedly connected via a coupling (27).

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