A grate bar rapping device applied to a sintering machine

Abstract

The utility model discloses a grate bar rapping device applied to sintering machine, relate to sintering machine grate bar cleaning technical field. Including draw bar, lever, fixed pulley and drawstring, wherein, draw bar articulates in first fixed axle, and draw bar's one end is lap joint end, and the other end is draw connection end, and lever articulates in second fixed axle, and lever's one end is impact end, and the other end is counterweight end, and fixed pulley is installed on ground, and one end of drawstring is connected in draw connection end, and the other end of drawstring is passed fixed pulley and is connected in impact end, when dolly wheel drives lap joint end, draw bar rotates around first fixed axle and draws drawstring to the bottom of impact end of lever to grate bar, and when dolly wheel is separated from lap joint end, and lever rotates around second fixed axle due to gravity moment, and impact end hits on grate bar. The utility model only relies on the power of sintering machine dolly, and realizes the mechanized automatic cleaning sintered bottom material in grate bar gap without increasing external power source.

Description

Technical Field

[0001] This utility model relates to the field of grate bar cleaning technology for sintering machines, specifically a grate bar vibration device applied in sintering machines. Background Technology

[0002] Currently, sintering plants use 8-14mm sintered ore as the base material for sintering machines. However, due to the poor strength and small size of the sintered ore, it is easy to get stuck in the gaps of the grate bars of the sintering machine. Over time, this causes the grate bars of the sintering machine to become clogged, reducing the sintering exhaust area and increasing the negative pressure, thus affecting the production efficiency of the sintering machine.

[0003] Traditional methods for cleaning clogged grate bars involve manual cleaning using compressed air blowing and steel rod striking, which is inefficient and requires a huge workload for the staff. Utility Model Content

[0004] The purpose of this invention is to provide a grate bar vibration device for use in sintering machines, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grate bar vibrating device applied in a sintering machine, wherein the grate bar vibrating device is disposed between the sintering machine trolley and the ground, the sintering machine trolley includes a trolley frame and trolley wheels and grate bars mounted on the trolley frame, the grate bar vibrating device includes a pull rod, a lever, a fixed-length wheel and a pull rope, the middle part of the pull rod is hinged to a first fixed shaft, the axis of the first fixed shaft is perpendicular to the running direction of the sintering machine trolley, one end of the pull rod is an overlapping end, when the sintering machine trolley moves along the running direction, the trolley wheel can move the overlapping end to make the pull rod rotate around the first fixed shaft, the other end of the pull rod is a pulling end, and the lever is hinged to... The second fixed shaft has its axis perpendicular to the running direction of the sintering machine trolley. One end of the lever is the impact end, and the other end is the counterweight end. The gravitational torque between the counterweight end and the second fixed shaft is greater than the gravitational torque between the impact end and the second fixed shaft. The fixed pulley is installed on the ground. One end of the pull rope is connected to the pull-up end of the pull rod, and the other end of the pull rope can pass around the fixed pulley and be connected to the impact end of the lever. When the trolley wheel moves the overlapping end, the pull rod rotates around the first fixed shaft and pulls the pull rope to pull the impact end of the lever to the bottom of the grate bar. When the trolley wheel disengages from the overlapping end, the lever rotates around the second fixed shaft due to the gravitational torque, and the impact end strikes the grate bar.

[0006] Based on the above technical features, as the sintering machine trolley moves along the running direction, the trolley wheels in the sintering machine trolley can actuate the overlapping end. The pull rod is driven by the trolley wheels to rotate around the first fixed axis, thereby pulling the pull rope. The impact end in the lever that contacts the grate bar gradually moves downward away from the grate bar. As the sintering machine trolley moves to a certain extent, the overlapping end in the pull rod will disengage from the trolley wheels, and the pull rope will loosen because the pull rod is not subjected to external force. The lever will rotate around the second fixed axis due to the action of gravitational torque, and the impact end in the lever will strike the grate bar, giving the grate bar a vibrating force, thereby causing the sintering bottom material particles that are stuck in the gaps of the grate bar to fall off. When the trolley wheels of the next sintering machine arrive, they will continue to actuate the overlapping end and drive the pull rod to rotate, thus repeating the above process. The grate bar vibrating device of this utility model realizes mechanized and automatic cleaning of sintering bottom material particles in the gaps of the grate bars, eliminating the need for manual cleaning, ensuring the ventilation rate of the sintering machine trolley, and ensuring the production efficiency of the sintering machine; at the same time, it does not add external power sources such as electric, hydraulic, or pneumatic, but only relies on the power attached to the sintering machine trolley, saving electricity and equipment costs.

[0007] In this technical solution, preferably, the length from the overlapping end to the first fixed shaft is less than the length from the pulling end to the first fixed shaft.

[0008] Based on the above technical features, when the pull rod is driven to rotate by the trolley wheel, the pull end in the pull rod can have a larger swing angle, and the lever impact end can be pulled further away from the grate bar by the pull rope. Thus, when the impact end hits the grate bar, it can give the grate bar a greater vibration force.

[0009] Preferably, in this technical solution, the height of the fixed pulley is not higher than the height of the first fixed shaft.

[0010] Based on the above technical features, when the position of the fixed pulley is lower than the first fixed shaft, the direction of the force applied to the section of the pull rope between the pull end and the fixed pulley will be closer to the horizontal, which can effectively reduce the additional friction or energy loss caused by excessive angle.

[0011] Preferably, in this technical solution, the connecting end of the pull rod and the fixed pulley are located on the left and right sides of the first fixed shaft, respectively, so that a section of the pull rope between the fixed pulley and the impact end is arranged crosswise with the pull rod. More preferably, the fixed pulley is inclined along its own axis, so that a section of the pull rope between the fixed pulley and the impact end is arranged in a crosswise direction with the pull rod.

[0012] Based on the above technical features, the section of the pull rope between the fixed pulley and the impact end is arranged in a cross-plane configuration with the pull rod, which allows the pull rod and the lever to be on different vertical planes within a limited space, thus avoiding structural interference between the lever and the stage wheel. At the same time, by changing the direction of the pull rope through the fixed pulley, the tension applied by the pull rod to the pull rope is transmitted to the lever more efficiently.

[0013] Preferably, in this technical solution, the grate bar vibrating device further includes a mounting frame, and the lever is hinged to the mounting frame via a second fixed shaft.

[0014] In this technical solution, preferably, both the lever and the pull rod are inclined, and the inclination direction is towards the running direction of the sintering machine trolley.

[0015] Based on the above technical features, the pull rod and the lever are tilted in the same direction, and the direction of the force exerted by the pull rope is matched with the tilt angle of the lever, which can significantly increase the length of the power arm so that the tension applied by the pull rod to the pull rope can be transmitted to the lever more efficiently.

[0016] Preferably, in this technical solution, a counterweight is suspended at the counterweight end of the lever, and the length from the impact end of the lever to the second fixed axis is greater than the length from the counterweight end to the second fixed axis.

[0017] Based on the above technical features, the weight of the counterweight can be adjusted according to the actual working conditions. This ensures that while the impact end of the lever can provide a greater vibration force to the grate bars, it also ensures that when the pull rod is driven by the trolley wheel to pull the rope, the impact end of the lever can move away from the grate bars.

[0018] Preferably, in this technical solution, a buffer device is provided on the overlapping end to reduce the damage caused by the overlapping end of the tie rod to the platform wheel; a buffer device is provided on the impact end to reduce the damage caused by the impact end of the lever to the grate bar.

[0019] Preferably, in this technical solution, an impact end plate is installed at the impact end of the lever to increase the impact area on the grate bars. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the grate bar vibrating device in an embodiment of this utility model.

[0021] In the diagram: 1. Sintering machine trolley; 11. Trolley frame; 12. Trolley wheel; 13. Grate bar; 2. Tie rod; 21. Overlap end; 22. Pulling end; 3. First fixed shaft; 4. Lever; 41. Impact end; 42. Counterweight end; 5. Second fixed shaft; 6. Fixed pulley; 7. Pull rope; 8. Mounting frame; 9. Counterweight block. Detailed Implementation

[0022] 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.

[0023] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0025] Before understanding this utility model, it is important to understand that sintered ore is mainly produced using large belt sintering machines. A crucial factor affecting the production quality of belt sintering machines is the effective ventilation area. Therefore, whether the grate bars 13 are clogged significantly impacts the normal operation of the sintering machine. The grate bars 13 in the sintering machine trolley 1 are composed of many rectangular cast iron materials arranged in a row. Gaps are left between each grate bar 13 for ventilation, which facilitates ventilation and combustion during the sintering process. Simultaneously, the sintering process is a ventilation process. Due to the heat storage effect at the bottom, the temperature at the grate bars 13 is high and lasts for a long time. Therefore, the grate bars 13 are very prone to clogging, and to ensure the ventilation of the sintering machine, the grate bars 13 must be cleaned.

[0026] This utility model provides a technical solution: a grate bar vibration device applied in a sintering machine, such as... Figure 1 As shown, the grate bar vibration device is set between the sintering machine trolley 1 and the ground. The sintering machine trolley 1 includes a trolley frame 11 and trolley wheels 12 and grate bars 13 installed on the trolley frame 11. The grate bar vibration device includes a pull rod 2, a lever 4, a fixed pulley 6 and a pull rope 7.

[0027] Specifically, along the running direction of the sintering machine trolley 1, a number of trolley wheels 12 are arranged at intervals on the trolley frame 11. The middle part of the pull rod 2 is hinged to the first fixed shaft 3. The axis of the first fixed shaft 3 is perpendicular to the running direction of the sintering machine trolley 1, and also perpendicular to the trolley surface of the sintering machine trolley 1 (i.e., the axis of the first fixed shaft 3 is perpendicular to the paper plane). One end of the pull rod 2 is the overlapping end 21. When the sintering machine trolley 1 moves along the running direction, the trolley wheel 12 can move the overlapping end 21 to make the pull rod 2 rotate around the first fixed shaft 3. The other end of the pull rod 2 is the connecting end 22. Lever 4 is hinged to the second fixed shaft 5. The axis of the second fixed shaft 5 is perpendicular to the running direction of the sintering machine trolley 1 and also perpendicular to the trolley surface of the sintering machine trolley 1 (i.e., the axis of the second fixed shaft 5 is perpendicular to the plane of the paper). One end of the lever 4 is the impact end 41, and the other end is the counterweight end 42. The gravitational torque between the counterweight end 42 and the second fixed shaft 5 is greater than the gravitational torque between the impact end 41 and the second fixed shaft 5, so that the lever 4 can rotate by its own gravitational torque when no external force is applied. The fixed pulley 6 is installed on the ground. One end of the pull rope 7 is connected to the pull end 22 of the pull rod 2, and the other end of the pull rope 7 can pass over the fixed pulley 6 and be connected to the impact end 41 of the lever 4.

[0028] In this invention, as the sintering machine trolley 1 moves along the running direction, one of the trolley wheels 12 can actuate the overlapping end 21 of the pull rod 2. When the trolley wheel 12 actuates the overlapping end 21, the pull rod 2 is driven by the trolley wheel 12 to rotate around the first fixed axis 3, thereby pulling the pull rope 7 to gradually pull down the impact end 41 of the lever 4 that contacts the grate bar 13 to the bottom of the grate bar 13. As the sintering machine trolley 1 moves to a certain extent, the overlapping end 21 of the pull rod 2 will disengage from the trolley wheel 12 (at this time, when the next trolley wheel 12 arrives...). Previously, the overlapping end 21 of the pull rod 2 was suspended between two adjacent trolley wheels 12. When the trolley wheel 12 disengaged from the overlapping end 21, the pull rope 7 would loosen because the pull rod 2 was not subjected to external force. The lever 4 would rotate around the second fixed axis 5 due to the action of gravitational torque. The impact end 41 would strike the grate bar 13, giving the grate bar 13 a vibrating force, thereby causing the sintering bottom material particles stuck in the gaps of the grate bar 13 to fall off. When the trolley wheel 12 of the next sintering machine trolley 1 arrives, it will continue to push the overlapping end 21 and drive the pull rod 2 to rotate, thus repeating the above process. Therefore, the grate bar vibrating device in this utility model realizes mechanized and automatic cleaning of sintering bottom material particles in the gaps of the grate bars 13 without manual cleaning, ensuring the ventilation rate of the sintering machine trolley 1 and ensuring the production efficiency of the sintering machine; at the same time, without adding external power sources such as electric, hydraulic, or pneumatic, it only relies on the power attached to the sintering machine trolley 1, saving electricity and equipment costs.

[0029] Specifically, such as Figure 1As shown, along the running direction of the sintering machine trolley 1, when the trolley wheel 12 moves the overlapping end 21 of the pull rod 2, the overlapping end 21 of the pull rod 2 abuts against the bottom right side of the trolley wheel 12. The pull rod 2 can rotate clockwise around the first fixed axis 3 driven by the trolley wheel 12. At the same time, by pulling the pull rope 7, the lever 4 is pulled to rotate clockwise around the second fixed axis 5. When the overlapping end 21 of the pull rod 2 disengages from the trolley wheel 12, since the gravitational torque between the counterweight end 42 and the second fixed axis 5 is greater than the gravitational torque between the impact end 41 and the second fixed axis 5, the lever 4 rotates counterclockwise around the second fixed axis 5. At the same time, the pull rope 7 is pulled in the opposite direction, pulling the pull rod 2 to rotate counterclockwise around the first fixed axis 3.

[0030] Furthermore, the length from the overlapping end 21 to the first fixed shaft 3 is less than the length from the pulling end 22 to the first fixed shaft 3. Therefore, when the pull rod 2 is driven to rotate by the trolley wheel 12, the pulling end 22 in the pull rod 2 can have a larger swing angle, and the impact end 41 of the lever 4 can be pulled further away from the grate bar 13 by the pull rope 7. Thus, when the impact end 41 strikes the grate bar 13, it can give the grate bar 13 a larger vibration force. Preferably, in this embodiment of the present invention, the ratio of the length from the overlapping end 21 to the first fixed shaft 3 to the length from the pulling end 22 to the first fixed shaft 3 is 1:1 to 1:1.5, specifically 1:1.1, 1:1.2, 1:1.3, 1:1.4 and 1:1.5, or any ratio between the above adjacent ratios.

[0031] Specifically, the axis of the fixed pulley 6 is parallel to the axes of the first fixed shaft 3 and the second fixed shaft 5. Simultaneously, the height of the fixed pulley 6 is no higher than the height of the first fixed shaft 3, so that the direction of force applied to the section of the pull rope 7 between the pull-connecting end 22 and the fixed pulley 6 is closer to horizontal, effectively reducing additional friction or energy loss caused by excessive angle. Preferably, the fixed pulley 6 and the pull-connecting end 22 in the pull rod 2 are on the same horizontal line.

[0032] like Figure 1 As shown, the connecting end 22 of the pull rod 2 and the fixed pulley 6 are located on the left and right sides of the first fixed shaft 3, respectively, so that a section of the pull rope 7 between the fixed pulley 6 and the impact end 41 is arranged crosswise with the pull rod 2. Preferably, the fixed pulley 6 is inclined along its own axis, so that a section of the pull rope 7 between the fixed pulley 6 and the impact end 41 is arranged in a non-plane crosswise with the pull rod 2. Specifically, the inclination angle of the fixed pulley 6 can be reasonably adjusted according to the actual site conditions so that the pull rod 2 and the lever 4 are on different vertical planes within a limited space, avoiding structural interference between the lever 4 and the platform wheel 12. At the same time, in this utility model, the direction of the pull rope 7 can be changed by the fixed pulley 6, so that the tension applied by the pull rod 2 to the pull rope 7 can be transmitted to the lever 4 more efficiently.

[0033] like Figure 1As shown, the grate bar vibrating device of this utility model also includes a mounting frame 8, and the lever 4 is hinged to the mounting frame 8 via a second fixed shaft 5. Preferably, both the first fixed shaft 3 and the second fixed shaft 5 can be pins.

[0034] Both lever 4 and pull rod 2 are inclined, and the inclination direction is towards the running direction of the sintering machine trolley 1. The inclination direction of pull rod 2 is consistent with that of lever 4, which can match the direction of the force of pull rope 7 with the inclination angle of lever 4, significantly increasing the length of the power arm, and making the tension applied by pull rod 2 to pull rope 7 more efficiently transmitted to lever 4.

[0035] like Figure 1 As shown, a counterweight 9 is suspended from the counterweight end 42 of the lever 4. In this invention, the weight of the counterweight 9 can be reasonably adjusted according to the actual working conditions. This ensures that while the impact end 41 of the lever 4 can provide a greater vibration force to the grate bar 13, it also ensures that when the pull rod 2 is driven by the trolley wheel 12 to pull the pull rope 7, the impact end 41 of the lever 4 can move away from the grate bar 13. At the same time, the length from the impact end 41 of the lever 4 to the second fixed shaft 5 is greater than the length from the counterweight end 42 to the second fixed shaft 5, so that the impact end 41 of the lever 4 can provide a greater vibration force to the grate bar 13.

[0036] In this invention, a buffer device can be provided at the overlapping end 21 of the pull rod 2 to reduce the scraping and impact of the overlapping end 21 of the pull rod 2 on the platform wheel 12. Simultaneously, a buffer device can also be provided on the impact end 41 of the lever 4 to reduce impact damage to the grate bars 13. The aforementioned buffer devices can be buffers, flexible buffer pads, etc.

[0037] Furthermore, to increase the impact area on the grate bars 13, an impact end plate can be installed at the impact end 41 of the lever 4. At the same time, to ensure that the impact covers the entire trolley surface of the sintering machine trolley 1, several sets of grate bar vibration devices can be set along the running direction of the sintering machine trolley 1.

[0038] The working principle of this utility model grate bar vibrating device is as follows:

[0039] 1. As the sintering machine trolley 1 moves along the running direction, one of the trolley wheels 12 in the sintering machine trolley 1 can move the overlapping end 21 of the pull rod 2. When the trolley wheel 12 moves the overlapping end 21, the pull rod 2 is driven by the trolley wheel 12 to rotate around the first fixed shaft 3, thereby pulling the pull rope 7, so as to gradually pull down the impact end 41 of the lever 4 that is in contact with the grate bar 13 to the bottom of the grate bar 13.

[0040] 2. As the sintering machine trolley 1 moves to a certain extent, the overlapping end 21 in the tie rod 2 will disengage from the trolley wheel 12 (at this time, before the next trolley wheel 12 arrives, the overlapping end 21 in the tie rod 2 is suspended between two adjacent trolley wheels 12). When the trolley wheel 12 disengages from the overlapping end 21, the pull rope 7 will loosen because the tie rod 2 is not subjected to external force. The lever 4 will rotate around the second fixed axis 5 due to the action of gravitational torque. The impact end 41 will strike the grate bar 13, giving the grate bar 13 a vibrating force, thereby causing the sintering bottom material particles that are stuck in the gaps of the grate bar 13 to fall off.

[0041] 3. When the trolley wheel 12 of the next sintering machine trolley 1 arrives, the overlapping end 21 will continue to be moved, and the pull rod 2 will be driven to rotate, so that the lever 4 contacts the impact end 41 of the grate bar 13 and moves downward away from the grate bar 13, thus repeating the above processes 1 and 2.

[0042] 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 grate bar rapping device for use in a sintering machine, characterized in that, The grate bar vibration device is installed between the sintering machine trolley (1) and the ground. The sintering machine trolley (1) includes a trolley frame (11) and trolley wheels (12) and grate bars (13) mounted on the trolley frame (11). The grate bar vibration device includes: A pull rod (2) is hinged to a first fixed shaft (3) at its middle part. The axis of the first fixed shaft (3) is perpendicular to the running direction of the sintering machine trolley (1). One end of the pull rod (2) is an overlapping end (21). When the sintering machine trolley (1) moves along the running direction, the trolley wheel (12) can move the overlapping end (21) to make the pull rod (2) rotate around the first fixed shaft (3). The other end of the pull rod (2) is a connecting end (22). A lever (4) is hinged to a second fixed shaft (5), the axis of which is perpendicular to the running direction of the sintering machine trolley (1). One end of the lever (4) is an impact end (41), and the other end is a counterweight end (42). The gravitational torque between the counterweight end (42) and the second fixed shaft (5) is greater than the gravitational torque between the impact end (41) and the second fixed shaft (5). A fixed pulley (6) is installed on the ground; A pull rope (7) is provided, one end of which is connected to the pull end (22) of the pull rod (2), and the other end of which can pass over the fixed pulley (6) and be connected to the impact end (41) of the lever (4). When the wheel (12) moves the overlapping end (21), the lever (2) rotates around the first fixed axis (3) and pulls the rope (7) to pull the impact end (41) of the lever (4) to the bottom of the grate bar (13); when the wheel (12) disengages from the overlapping end (21), the lever (4) rotates around the second fixed axis (5) due to the action of gravity torque, and the impact end (41) strikes the grate bar (13).

2. A grate bar rapping device as claimed in claim 1, characterized in that The length from the overlapping end (21) to the first fixed shaft (3) is less than the length from the pulling end (22) to the first fixed shaft (3).

3. A grate bar rapping device as claimed in claim 1, characterized in that The height of the fixed pulley (6) is not higher than the height of the first fixed shaft (3).

4. A grate bar rapping device as claimed in claim 3, characterised in that The pull end (22) of the pull rod (2) and the fixed pulley (6) are located on the left and right sides of the first fixed shaft (3) respectively, so that a section of pull rope (7) between the fixed pulley (6) and the impact end (41) is arranged crosswise with the pull rod (2).

5. A grate bar rapping device as claimed in claim 4, characterised in that The fixed pulley (6) is inclined along its own axis so that a section of the pull rope (7) between the fixed pulley (6) and the impact end (41) is arranged to cross the pull rod (2) in opposite directions.

6. The grate bar vibrating device according to claim 1, characterized in that, The grate bar vibrating device also includes a mounting frame (8), and the lever (4) is hinged to the mounting frame (8) via a second fixed shaft (5).

7. The grate bar vibrating device according to claim 1, characterized in that, Both the lever (4) and the pull rod (2) are inclined, and the inclination direction is towards the running direction of the sintering machine trolley (1).

8. The grate bar vibrating device according to claim 1, characterized in that, The counterweight end (42) of the lever (4) is suspended by a counterweight block (9), and the length from the impact end (41) of the lever (4) to the second fixed shaft (5) is greater than the length from the counterweight end (42) to the second fixed shaft (5).

9. The grate bar vibrating device according to claim 1, characterized in that, The overlapping end (21) is provided with a buffer device to reduce the damage caused by the overlapping end (21) of the tie rod (2) to the trolley wheel (12); the impact end (41) is provided with a buffer device to reduce the damage caused by the impact end (41) of the lever (4) to the grate bar (13).

10. The grate bar vibrating device according to claim 1, characterized in that, An impact plate is installed at the impact end (41) of the lever (4) to increase the impact area on the grate bar (13).

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