Steel brick lifting appliance for replacing blast furnace throat steel brick

Abstract

The utility model relates to a steel brick lifting appliance for replacing a blast furnace throat steel brick, which comprises a cross beam, a lifting lug fixedly arranged at the top of the cross beam, a lifting hook fixedly arranged at the bottom of the cross beam, a first motor fixedly arranged at one side part of the cross beam, a vertical plate fixedly connected with an output shaft of the first motor, a hydraulic cylinder arranged at the lower part of the vertical plate and a side plate fixedly connected with a piston rod of the hydraulic cylinder, a second motor is fixedly arranged at the top of the side plate, a first cavity is formed in the side plate in a hollow mode, an output shaft of the second motor extends into the first cavity and is fixedly connected with a first lead screw, the bottom end of the first lead screw is rotationally connected with the bottom of the first cavity, a first nut sleeves the first lead screw in a threaded mode, and a first sliding block is fixedly connected to the side, away from the hydraulic cylinder, of the first nut. A first sliding groove communicating with the first cavity is vertically formed in the side, away from the hydraulic cylinder, of the side plate, the first sliding block is slidably arranged in the first sliding groove, and the end, away from the hydraulic cylinder, of the first sliding block extends out of the first sliding groove and is fixedly connected with a bottom plate. According to the utility model, the steel bricks can be further effectively supported and clamped after being hoisted, so that the hoisting is safer and more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting, and in particular relates to a steel brick hoist for replacing blast furnace throat steel bricks. Background Art

[0002] At present, after long-term operation, the steel bricks at the throat of the blast furnace have serious deformation problems, which affects the smooth operation and high production of the blast furnace and needs to be replaced. When replacing the throat steel bricks, it is often necessary to use equipment such as hoists to lift the new steel bricks into place. During lifting, the top of common water-cooled throat steel bricks are generally pre-set with lifting ears. Currently, it is usually necessary to directly use the hooks on the hoist to hook the lifting ears on the steel bricks for lifting. However, in the actual lifting process, the steel bricks in this way have a large degree of freedom and are easy to shake. There is a risk of unhooking and falling. The safety is not high and needs to be improved. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a steel brick hoist for replacing blast furnace throat steel bricks, which can further realize effective support, clamping and lifting of the steel bricks after hooking and lifting the throat steel bricks, so as to solve the above problems.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a steel brick hanger for replacing steel bricks in the throat of a blast furnace, comprising a crossbeam, a lifting ear fixed on the top of the crossbeam, a hook fixed on the bottom, and a first motor fixed on one side, the output shaft of the first motor faces the side away from the crossbeam and is fixedly connected to a vertical plate, a hydraulic cylinder is fixedly passed through the lower part of the vertical plate horizontally, the piston rod of the hydraulic cylinder faces the direction of the crossbeam and is fixedly connected to the side plate, a second motor is fixed on the top of the side plate, a first cavity is hollowed out inside, the output shaft of the second motor extends into the first cavity and is coaxially fixedly connected to a first screw rod, the bottom end of the first screw rod is rotatably connected to the bottom of the first cavity and a first nut is threadedly sleeved on it, the first nut is fixedly connected to a first slider on the side away from the hydraulic cylinder, and a cavity is vertically opened on the side of the side plate away from the hydraulic cylinder. The top end face of said sliding panel also is provided with an interlocking structure, and the interlocking end faces east and west of the interlocking structure, and the interlocking end faces east and west of the interlocking structure.

[0005] Preferably, the first sliding block is adapted to the first sliding groove.

[0006] Preferably, the second sliding block is adapted to the second sliding groove.

[0007] Preferably, the limiting plate is adapted to the guide groove.

[0008] Preferably, the side panels, bottom panel and limiting panel are all foam aluminum panels.

[0009] The beneficial effects of the present invention are as follows: when in use, the lifting lugs on the crossbeam are connected to existing conventional cranes and other lifting equipment. In the initial state, the entire side panels and bottom plate are located above the crossbeam. During lifting, first use the hooks on the crossbeam to hook the lifting lugs on the throat steel bricks and lift the throat steel bricks to a certain height. Then, operate the first motor to drive the side panels and bottom plate to rotate 180 degrees so that the side panels and bottom plate are located below the crossbeam. Next, operate the hydraulic cylinder to extend its piston rod, which can drive the side panels to move toward the throat steel bricks until the side panels hit the right side of the throat steel bricks. Afterwards, operate the second motor to drive the first screw to rotate forward, and with the threaded connection between the first nut and the first screw and the sliding connection between the first slider and the first slide groove, drive the bottom plate to move up until the bottom plate hits the bottom of the throat steel bricks. Then, the electric push rod is operated to extend its telescopic end, driving the limit plate to move upward until it extends above the bottom plate. The third motor is then operated to drive the second screw rod to rotate forward. Under the cooperation of the threaded connection between the second nut and the second screw rod, and the sliding connection between the second slider and the second slide groove, the limit plate is driven to move toward the furnace throat steel brick until the limit plate contacts the left side of the furnace throat steel brick. The furnace throat steel brick can be clamped and fixed between the side plate and the limit plate, and supported by the bottom plate. In addition, the hooking effect of the hook cooperates with each other to keep the furnace throat steel brick in a stable fixed state, which can effectively prevent the furnace throat steel brick from shaking or even falling off the hook during subsequent lifting, and improve the lifting safety. Afterwards, the furnace throat steel brick can be lifted into place using the corresponding lifting equipment. After hoisting to the top of the corresponding position, first operate the third motor to drive the second screw to reverse, so that the limit plate is away from the furnace throat steel brick, then operate the electric push rod to retract its telescopic end, drive the limit plate to move down and store it in the second cavity, then operate the second motor to drive the first screw to reverse, move the bottom plate down, release the support for the furnace throat steel brick, then operate the hydraulic cylinder to retract its telescopic end, drive the side plate away from the furnace throat steel brick, release the clamping of the furnace throat steel brick, finally operate the first motor to drive the side plate and bottom plate to rotate 180 degrees again, so that the side plate and bottom plate are re-positioned above the beam, so as not to affect the subsequent downward placement of the furnace throat steel brick. In this way, after the furnace throat steel brick is hooked and lifted, the effective support, clamping and lifting of the furnace throat steel brick can be further achieved, which is simple to operate, safer and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of the utility model when in use;

[0011] Figure 2 This is a schematic diagram of the main structure of the utility model when not in use;

[0012] Figure 3 This is a schematic diagram of the main structure of the side panels and bottom panel of the utility model;

[0013] Figure 4 It is a schematic diagram of the main structure of the side panels and the bottom panel when the utility model is in use.

[0014] The numbers in the figure are: 1 is the crossbeam, 2 is the lifting ear, 3 is the hook, 4 is the first motor, 5 is the vertical plate, 6 is the hydraulic cylinder, 7 is the side plate, 8 is the second motor, 9 is the first cavity, 10 is the first screw rod, 11 is the first nut, 12 is the first slider, 13 is the first slide groove, 14 is the bottom plate, 15 is the second cavity, 16 is the third motor, 17 is the second screw rod, 18 is the second nut, 19 is the second slider, 20 is the electric push rod, 21 is the second slide groove, 22 is the limit plate, 23 is the guide groove, and 24 is the throat steel brick. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] like Figures 1 to 4As shown, a steel brick hoist for replacing blast furnace throat steel bricks includes a crossbeam 1, a lifting ear 2 is fixedly provided on the top of the crossbeam 1, a hook 3 is fixedly provided on the bottom, and a first motor 4 is fixedly provided on one side. The output shaft of the first motor 4 faces the side away from the crossbeam 1 and is fixedly connected to a vertical plate 5. A hydraulic cylinder 6 is fixedly provided horizontally through the lower part of the vertical plate 5, and the piston rod of the hydraulic cylinder 6 faces the direction of the crossbeam 1 and is fixedly connected to a side plate 7. A second motor 8 is fixed to the top of the side plate 7, and a first cavity 9 is provided in the hollow interior. The output shaft of the second motor 8 extends into the first cavity 9 and is coaxially fixedly connected to a first screw rod 10. The bottom end of the first screw rod 10 is rotatably connected to the bottom of the first cavity 9 and a first nut 11 is threadedly sleeved on it. The first nut 11 is fixedly connected to a first slider 12 on the side away from the hydraulic cylinder 6. A first slide groove 13 connected to the first cavity 9 is vertically opened on the side of the side plate 7 away from the hydraulic cylinder 6. The first slider 12 is slidably arranged in the first slide groove 13 and its end away from the hydraulic cylinder 6 extends out of the first slide groove 13 and is fixedly connected to the bottom plate 14. A second cavity 15 is hollowed out inside the bottom plate 14, and a third motor 16 is fixedly provided on one end of the inner bottom of the second cavity 15 close to the side plate 7. The output shaft of the third motor 16 faces the side away from the side plate 7 and is coaxially fixedly connected with a second screw rod 17. The end of the second screw rod 17 away from the third motor 16 is rotatably connected to the corresponding side wall of the second cavity 15 and a second nut 18 is threadedly sleeved thereon. A second slider 19 is fixedly provided at the bottom end of the second nut 18, and an electric push rod 20 is fixedly provided at the top end. A second slide groove 21 is provided on the bottom of the second cavity 15, and the second slider 19 is slidably provided on the second slide groove 21. The telescopic end of the electric push rod 20 faces upward and is fixedly connected to a limit plate 22. A guide groove 23 communicating with the second cavity 15 is provided on the top of the bottom plate 14, and the limit plate 22 can extend to the top of the bottom plate 14 through the guide groove 23;

[0017] During use, the lifting lugs 2 on the crossbeam 1 are connected to existing conventional cranes and other lifting equipment. In the initial state, the entire side panels 7 and bottom plate 14 are located above the crossbeam 1. During lifting, the hooks 3 on the crossbeam 1 are first used to hook the lifting lugs on the throat steel brick 24 and lift the throat steel brick 24 to a certain height. Then, the first motor 4 is operated to drive the side panels 7 and bottom plate 14 to rotate 180 degrees, so that the side panels 7 and bottom plate 14 are located below the crossbeam 1. Next, the hydraulic cylinder 6 is operated to extend its piston rod, which can drive the side panels 7 toward the throat steel brick 24 until the side panels 7 contact the right side of the throat steel brick 24. After that, the second motor 8 is operated to drive the first screw 10 to rotate forward. With the threaded connection between the first nut 11 and the first screw 10, and the sliding connection between the first slider 12 and the first slide 13, the bottom plate 14 is driven to move upward until the bottom plate 14 contacts the bottom of the throat steel brick 24. Then, the electric push rod 20 is operated to extend its telescopic end, driving the limit plate 22 to move upward until it extends above the bottom plate 14. The third motor 16 is then operated to drive the second screw rod 17 to rotate forward. Under the threaded connection between the second nut 18 and the second screw rod 17, and the sliding connection between the second slider 19 and the second slide 21, the limit plate 22 is driven to move toward the throat steel brick 24 until the limit plate 22 contacts the left side of the throat steel brick 24. The throat steel brick 24 is then clamped and fixed between the side plate 7 and the limit plate 22, and supported by the bottom plate 14. In addition, the hook 3 cooperates with each other to keep the throat steel brick 24 firmly fixed, effectively preventing the throat steel brick 24 from shaking or even falling off the hook during subsequent lifting, and improving lifting safety. Afterwards, the throat steel brick 24 can be lifted into place using the corresponding lifting equipment. After hoisting to the top of the corresponding position, the third motor 16 is first operated to drive the second screw 17 to reverse and move the limit plate 22 away from the furnace throat steel brick 24. Then the electric push rod 20 is operated to retract its telescopic end, driving the limit plate 22 to move down and be stored in the second cavity 15. Then the second motor 8 is operated to drive the first screw 10 to reverse and move the bottom plate 14 down to release the support for the furnace throat steel brick 24. Then the hydraulic cylinder 6 is operated to retract its telescopic end to drive the side plate 7 away from the furnace throat steel brick 24 and release the clamping of the furnace throat steel brick 24. Finally, the first motor 4 is operated to drive the side plate 7 and the bottom plate 14 to rotate 180 degrees again so that the side plate 7 and the bottom plate 14 are relocated above the crossbeam 1, so as not to affect the subsequent downward placement of the furnace throat steel brick 24. In this way, after the furnace throat steel brick 24 is hooked and hoisted, the furnace throat steel brick 24 can be further effectively supported, clamped and hoisted, which is simple to operate and more safe and practical.

[0018] In this embodiment, the first sliding block 12 is matched with the first sliding groove 13 to ensure that the bottom plate 14 can be raised and lowered smoothly.

[0019] In this embodiment, the second sliding block 19 is matched with the second sliding groove 21 to ensure that the limiting plate 22 can move left and right smoothly.

[0020] In this embodiment, the limiting plate 22 is matched with the guide groove 23 to ensure that the limiting plate 22 extends smoothly.

[0021] In this embodiment, the side panels 7, bottom panel 14 and limit panel 22 are all made of foam aluminum panels. Foam aluminum is an existing material with the characteristics of high damping, shock absorption and energy absorption. It can provide good buffering and shock absorption protection during lifting, which is more conducive to smooth lifting, improves safety during lifting, and is safer and more practical.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel brick hanger for replacing blast furnace throat steel bricks, characterized in that: The cam is fixedly provided with a first motor on one side of the cam, and a first slide is fixedly provided on the side of the cam away from the hydraulic cylinder. The top end of the second motor is fixed with a first sliding block, and the top end is fixed with an electric push rod, and the bottom end of the second nut is threadedly sleeved with a second screw rod.

2. The steel brick hanger for replacing blast furnace throat steel bricks according to claim 1, characterized in that: The first sliding block is adapted to the first sliding groove.

3. The steel brick hanger for replacing blast furnace throat steel bricks according to claim 1, characterized in that: The second sliding block is adapted to the second sliding groove.

4. The steel brick hanger for replacing blast furnace throat steel bricks according to claim 1, characterized in that: The limiting plate is adapted to the guide groove.

5. The steel brick hanger for replacing blast furnace throat steel bricks according to claim 1, characterized in that: The side panels, bottom panel and limiting panel are all foam aluminum panels.

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