A hot-rolled heavy shear blade replacement device and replacement method

Abstract

This invention provides a hot-rolled heavy-duty shear blade replacement device and method, including a maintenance platform, a shear blade adjustment mechanism, and a shear blade fixing mechanism. The shear blade adjustment mechanism is installed on the maintenance platform. The shear blade fixing mechanism includes a rotating shaft and several fasteners. The shear blade adjustment mechanism is drivenly connected to the rotating shaft, which is installed in the maintenance platform. The several fasteners are installed on the upper and lower sides of the rotating shaft, and the fasteners lock and support the shear blade. This invention provides fasteners on both the upper and lower sides of the rotating shaft, enabling simultaneous replacement of both the upper and lower shear blades, significantly saving maintenance time. Simultaneously, the fasteners lock the shear blade to be replaced, preventing it from shaking or falling and causing injury. Using this invention, the work time for shear blade maintenance and replacement is reduced from 72 hours for 6 people to only 24 hours for 4 people, effectively shortening the operation time and saving maintenance costs.

Description

Technical Field

[0001] This invention relates to the technical field of hot rolling mill equipment maintenance and shear blade replacement equipment, and in particular to a hot rolling mill heavy shear blade replacement device and replacement method. Background Technology

[0002] Currently, in the field of hot-rolled heavy-duty shear blade maintenance technology, the common practice when replacing shear blades is to install them one by one sequentially. The operation process is roughly as follows: first, the shear blades are assembled on-site; then, an overhead crane is used to transport the individual shear blades to the heavy-duty shearing unit; next, a hoist is used to move the individual shear blades to their installation positions; then, the old shear blades are disassembled and replaced with new ones, with the old shear blades being lifted out by the overhead crane.

[0003] The above replacement method is not only highly dangerous and time-consuming, but also prone to instability and wobbling during blade disassembly due to its weight, making maintenance very difficult. Moreover, only one blade can be replaced at a time, resulting in low work efficiency. It takes 6 people 72 hours to complete the replacement of the blade, making the construction difficult. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a hot rolling heavy shear blade replacement device and method that is easy to construct, quick and convenient, in order to solve the problems of high construction difficulty, long construction time and low labor efficiency when replacing shear blades in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a hot rolling heavy shear blade replacement device, comprising a maintenance platform, a shear blade adjustment mechanism, and a shear blade fixing mechanism. The shear blade adjustment mechanism is mounted on the maintenance platform; the shear blade fixing mechanism includes a rotating shaft and a plurality of fasteners. The shear blade adjustment mechanism is kinetically connected to the rotating shaft, which is mounted in the maintenance platform; the plurality of fasteners are mounted on the upper and lower sides of the rotating shaft, and the fasteners provide locking support for the shear blade.

[0006] Preferably, the maintenance platform includes several slide rails, several reinforcing ribs are fixedly connected between the slide rails, and a platform steel plate is provided above the reinforcing ribs.

[0007] Preferably, the hot-rolled heavy shear blade replacement device further includes a safety pin insertion component, which is fixed on two slide rails at both ends of the maintenance platform.

[0008] Preferably, the shear blade fixing mechanism further includes bearings, which are mounted on two slide rails at both ends of the maintenance platform, and the rotating shaft is rotatably connected to the maintenance platform through the bearings.

[0009] Preferably, the shear blade fixing mechanism further includes a stop block, which is connected to a fastener, and the gap between the stop block and the fastener is adjustable.

[0010] Preferably, the shear blade adjustment mechanism includes a support component, a drive component, and a transmission component. The drive component is fixed on the maintenance platform and is connected to the rotating shaft through the transmission component.

[0011] Preferably, the support assembly includes a support frame and a support base. The support frame is fixed on the maintenance platform, and the support base is fixed at the end of the support frame away from the maintenance platform. The top of the support base has a support groove, and the rotating shaft is placed in the support groove.

[0012] Preferably, the drive assembly includes a handwheel and a reducer, the transmission assembly includes a worm gear and a worm, the output shaft of the reducer is fixedly connected to the worm, and the worm gear is sleeved on the rotating shaft; a connecting block is provided on the side wall of the support base, the worm is rotatably mounted on the connecting block and is connected to the worm gear in a transmission connection; the reducer is fixed on the support frame, and the handwheel is connected to the rotating shaft in a transmission connection through the reducer, the worm, and the worm gear.

[0013] Preferably, the hot-rolled heavy shear blade replacement device further includes several counterweights, which are located at the end of the maintenance platform away from the rotating shaft.

[0014] To achieve the above and other related objectives, the present invention also provides a method for replacing hot-rolled heavy-duty shear blades, using the aforementioned hot-rolled heavy-duty shear blade replacement device, with the following specific steps:

[0015] S1: Move the maintenance platform to the drive roller conveyor of the hot rolling heavy-duty shear;

[0016] S2: Operate the blade adjustment mechanism to bring the blade fixing mechanism close to the blade to be replaced, and lock and support the blade to be replaced using fasteners.

[0017] S3: Remove the shear blade to be replaced and adjust the shear blade fixing mechanism through the shear blade adjustment mechanism, then move the maintenance platform out of the transmission roller conveyor;

[0018] S4: Secure the new shear blade to the shear blade fixing mechanism using fasteners;

[0019] S5: Move the maintenance platform to the drive roller table of the hot rolling heavy-duty shear, operate the shear blade adjustment mechanism to bring the shear blade fixing mechanism close to the shear blade installation position, and install and fix the new shear blade onto the hot rolling heavy-duty shear.

[0020] S6: Adjust the shear blade fixing mechanism through the shear blade adjustment mechanism to move the maintenance platform out of the transmission roller conveyor.

[0021] As described above, the hot rolling heavy shear blade replacement device and replacement method of the present invention have the following beneficial effects:

[0022] The hot-rolled heavy-duty shear blade replacement device and method of this invention are equipped with a maintenance platform, providing convenient space for operators to perform replacement work and ensuring their safety. Fasteners are installed on both the upper and lower sides of the rotating shaft, allowing for simultaneous replacement of both the upper and lower shear blades, significantly saving maintenance time. The fasteners also lock the blades to be replaced, preventing them from shaking or falling and causing injury. Using the hot-rolled heavy-duty shear blade replacement device and method of this invention, the maintenance and replacement time for shear blades is reduced from 72 hours for 6 people to only 24 hours for 4 people, effectively shortening the operation time and saving maintenance costs. This invention solves the problems of existing technology where personnel lack operating points and leverage during shear blade replacement, making blade disassembly and assembly difficult and personnel positioning inconvenient, ensuring personal safety and improving work efficiency. Attached Figure Description

[0023] Figure 1 This is a top view of the hot rolling heavy shear blade replacement device of the present invention;

[0024] Figure 2 This is a spatial schematic diagram of the maintenance platform of the hot rolling heavy shear blade replacement device of the present invention.

[0025] Figure 3 This is a front view of the safety pin insertion hole of the hot-rolled heavy shear blade replacement device of the present invention;

[0026] Figure 4 This is a front view of the hot rolling heavy shear blade replacement device of the present invention;

[0027] Figure 5 This is a spatial schematic diagram of the counterweight block of the hot rolling heavy shear blade replacement device of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Inspection platform; 101. Slide rail; 102. Platform steel plate; 103. Reinforcing ribs;

[0030] 2. Safety pin insertion hole;

[0031] 3. Shear blade adjustment mechanism; 301. Handwheel; 302. Reducer; 303. Worm gear; 304. Worm wheel; 305. Support frame; 306. Support base; 307. Support groove; 308. Connecting block;

[0032] 4. Shear blade fixing mechanism; 401. Fastener; 402. Bearing; 403. Rotating shaft; 404. Support block; 405. Connecting frame;

[0033] 5. Counterweight. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0036] like Figure 1 As shown, the present invention provides a hot rolling heavy shear blade replacement device (hereinafter referred to as the shear blade replacement device), including a maintenance platform 1, a shear blade adjustment mechanism 3, and a shear blade fixing mechanism 4. The shear blade adjustment mechanism 3 is welded to the maintenance platform 1. The shear blade fixing mechanism 4 includes a rotating shaft 403 and a plurality of fasteners 401. The shear blade adjustment mechanism 3 is connected to the rotating shaft 403 in a transmission manner. The rotating shaft 403 is rotatably installed in the maintenance platform 1. The plurality of fasteners 401 are installed on the upper and lower sides of the rotating shaft 403, and the fasteners 401 lock and support the shear blade.

[0037] The present invention relates to a hot-rolled heavy-duty shear blade replacement device. When disassembling an old shear blade, the maintenance platform 1 is moved to the drive roller table of the hot-rolled heavy-duty shear. Then, the angle of the shear blade fixing mechanism 4 is changed by the shear blade adjustment mechanism 3, so that the shear blade fixing mechanism 4 contacts and is in contact with the shear blade to be replaced. The shear blade to be replaced is then fixed by fasteners 401. The old shear blade is then removed, and the angle of the shear blade fixing mechanism 4 is reduced again by the shear blade adjustment mechanism 3. Then, the maintenance platform 1 with the old shear blade fixed is moved out of the drive roller table of the hot-rolled heavy-duty shear. When a new shear blade needs to be installed, the new shear blade is fixed to the fasteners 401. Then, the maintenance platform 1 with the new shear blade fixed is moved to the drive roller table of the hot-rolled heavy-duty shear. Then, the angle of the shear blade fixing mechanism 4 is changed by the shear blade adjustment mechanism 3, so that the shear blade fixing mechanism 4 contacts and is in contact with the hot-rolled heavy-duty shear. The new shear blade is then fixed to the hot-rolled heavy-duty shear by fasteners 401. Then, the maintenance platform 1 is moved out of the drive roller table of the hot-rolled heavy-duty shear. Several fasteners 401 are installed on the upper and lower sides of the rotating shaft 403, allowing for simultaneous replacement of the upper and lower shear blades, thus improving replacement efficiency. Operators can work from the maintenance platform 1, ensuring their safety.

[0038] Preferred, such as Figure 1 , Figure 2 As shown, the maintenance platform 1 includes several slide rails 101, with several reinforcing ribs 103 welded between them. A platform steel plate 102 is positioned above the reinforcing ribs 103. In this embodiment, there are two slide rails 101, and the reinforcing ribs 103 are welded between the two slide rails 101. Furthermore, in this embodiment, to facilitate the fixing of the shear blade adjustment mechanism 3, the platform steel plate 102 only covers the front half of the reinforcing ribs 103, and the shear blade adjustment mechanism 3 is welded to the rear front half that does not cover the reinforcing ribs 103. In other embodiments, the platform steel plate 102 may also cover the entire reinforcing rib 103. In this embodiment, the maintenance platform 1 weighs 2.2T and is mainly used to house the shear blade adjustment mechanism 3, the shear blade fixing mechanism 4, and the counterweight 5.

[0039] Preferred, such as Figure 1 , Figure 2 , Figure 3As shown, to ensure high safety, the hot-rolled heavy-duty shear blade replacement device also includes a safety pin insertion hole 2, which is welded to two slide rails 101 at both ends of the maintenance platform 1. In this embodiment, the safety pin insertion hole 2 is connected to the corresponding fixing components of the hot-rolled heavy-duty shear via a safety pin. This serves two purposes: firstly, it secures the blade replacement device; secondly, when the safety pin is inserted into the safety pin insertion hole 2, it indicates that the blade replacement device has moved to the working area of ​​the shear blade, enabling rapid positioning. Furthermore, when a crane is used to hoist the blade replacement device onto the roller conveyor of the hot-rolled heavy-duty shear, the safety pin insertion hole 2 can also serve as a hoisting hole for hoisting operations.

[0040] Preferred, such as Figure 1 , Figure 2 , Figure 4 As shown, to ensure that the rotating shaft 403 has supporting components at both ends while still being able to rotate, the shear blade fixing mechanism 4 also includes bearings 402. The bearings 402 are installed on two slide rails 101 at both ends of the maintenance platform 1, and the rotating shaft 403 is rotatably connected to the maintenance platform 1 through the bearings 402.

[0041] Preferred, such as Figure 4 As shown, to ensure a better fit between the fastener 401 and the scissor blade when replacing the blade, the scissor blade fixing mechanism 4 also includes a support block 404. The support block 404 is connected to the fastener 401, and the gap between the support block 404 and the fastener 401 is adjustable. In this embodiment, the fastener 401 includes a fastening seat, a connecting bolt, and a connecting nut. The connecting bolt passes through both the fastening seat and the support block 404. The fastening seat is fixedly connected to the rotating shaft 403 via a connecting bracket 405. Figure 4 As shown, one end of the connecting frame 405 is welded to the fastening seat, and the other end of the connecting frame 405 is welded to the rotating shaft 403. When the rotating shaft 403 rotates, the connecting frame 405 drives the fastening seat to rotate clockwise or counterclockwise, thereby moving the fastening seat closer to or away from the shear blade.

[0042] Furthermore, in this embodiment, there are four fasteners 401. Two fasteners are provided on the upper side and two on the lower side of the rotating shaft 403. When the two fasteners 401 on the upper side can be aligned and fixed with the upper shear blade, the two fasteners 401 on the lower side can also be aligned and fixed with the lower shear blade. That is, when the rotating shaft 403 drives the two fasteners 401 on the upper side to rotate a certain angle, the two fasteners 401 on the lower side rotate the same angle. The four fasteners 401 can be aligned and fixed with the upper and lower shear blades at the same time, and the upper and lower shear blades can be disassembled and replaced.

[0043] Furthermore, in this embodiment, after the fastening seat approaches the shear blade, some of the bolts fixing the shear blade to the hot-rolling heavy-duty shearing equipment are removed. Then, the connecting bolts on the fastening seat pass through the connecting holes on the shear blade, and the connecting nut is used to lock the shear blade to the fastening seat. The abutment block 404 and the fastener 401 are simultaneously penetrated by the connecting bolts, and a shim can be placed between the abutment block 404 and the fastener 401 to adjust the gap between the fastener 401 and the shear blade, ensuring the shear blade is stably locked to the fastening seat with high safety. In this embodiment, the shear blade fixing mechanism 4 is mainly used to support and adjust the shear blade during disassembly or installation.

[0044] Preferred, such as Figure 1 , Figure 2 , Figure 4 As shown, the shear blade adjustment mechanism 3 is designed to adjust the angle of the shear blade fixing mechanism 4. The shear blade adjustment mechanism 3 includes a support assembly, a drive assembly, and a transmission assembly. The drive assembly is welded to the maintenance platform 1 and is connected to the rotating shaft 403 via the transmission assembly. Figure 2 As shown, in this embodiment, the support assembly includes a support frame 305 and a support base 306. The support frame 305 is welded to the reinforcing rib 103 on which the platform steel plate 102 is not laid. The top of the support base 306 has a support groove 307, and the rotating shaft 403 is placed in the support groove 307. In this embodiment, the support groove 307 is semi-circular in shape, and the support groove 307 is at the same height as the bearing 402 on the horizontal plane. That is, the left and right ends of the rotating shaft 403 pass through the bearing 402, and the middle of the rotating shaft 403 is placed in the support groove 307 to improve the load strength of the rotating shaft 403.

[0045] Preferred, such as Figure 1 , Figure 4 As shown, to enable the operator to drive the rotating shaft 403 to rotate, the drive assembly includes a handwheel 301 and a reducer 302, and the transmission assembly includes a worm gear 304 and a worm 303. The output shaft of the reducer 302 is connected to the worm 303 via a coupling, and the worm gear 304 is connected to the rotating shaft 403 via a key. A connecting block 308 is welded to the side wall of the support base 306, and the worm 303 is rotatably mounted on the connecting block 308 and meshes with the worm gear 304 for transmission. The reducer 302 is fastened to the support frame 305 with screws, and the handwheel 301 is connected to the rotating shaft 403 via the reducer 302, worm 303, and worm gear 304. In this embodiment, as... Figure 2 As shown, the connecting block 308 is a U-shaped block with a semi-circular opening. The worm 303 is fastened to the U-shaped block by a semi-circular clamp, which positions and supports the worm 303, allowing it to mesh with the worm wheel 304. In this embodiment, the handwheel 301 is fixedly connected to the input shaft of the reducer 302 via a coupling.

[0046] Furthermore, in this embodiment, the shear blade adjustment mechanism 3 enables the shear blade fixing mechanism 4 to rotate at a maximum angle range of 60°. In other embodiments, the handwheel 301 may also be a motor, rotary cylinder, or other drive components.

[0047] Preferred, such as Figure 1 , Figure 5 As shown, to avoid safety hazards caused by the shear blade replacement device tipping over or tilting during blade replacement, the hot-rolled heavy shear blade replacement device also includes several counterweights 5, which are located at the end of the maintenance platform 1 away from the rotating shaft 403. In this embodiment, there are two counterweights 5, each weighing 750 kg. The total weight of the upper and lower shear blades is 1.5 tons. After torque calculation, the mass of the two counterweights 5 is sufficient for use. In other embodiments, the number of counterweights 5 can also be different, as long as the weight of the counterweights is not less than the total weight of the upper and lower shear blades.

[0048] To achieve the above and other related objectives, the present invention also provides a method for replacing hot-rolled heavy-duty shear blades, using the aforementioned hot-rolled heavy-duty shear blade replacement device, with the following specific steps:

[0049] A1: Disassemble the old scissor blades

[0050] A1.1: Use a crane or other tooling to lift the blade changing device onto the transmission roller conveyor of the hot-rolled heavy-duty shear, and then push the slide rail 101 to make the safety pin insertion part 2 engage with the corresponding fixing component on the hot-rolled heavy-duty shear through the safety pin, so as to prevent the blade changing device from shifting.

[0051] A1.2: Personnel stand on maintenance platform 1 and remove the two fixing bolts connecting the old shear blade to the hot-rolled heavy-duty shear.

[0052] A1.3: The operator cranks handwheel 301, which drives worm gear 303 to rotate via reducer 302. Worm gear 303 drives worm wheel 304 to rotate, thereby driving rotating shaft 403 to rotate. Fastener 401 on one side of rotating shaft 403 deflects at a certain angle until fastener 401 aligns with the connection hole on the old shear blade after the fixing bolts have been removed. Then, connecting bolts and connecting nuts are used to fix the fastening seat to the old shear blade. During the fixing process, the stability of the old shear blade on the fastening seat can be ensured by adjusting the abutment block 404 and adding shims between the abutment block 404 and fastener 401. After the old shear blade is fixed on the fastening seat, the remaining fixing bolts between the old shear blade and the hot-rolled heavy-duty shear are removed.

[0053] A1.4: The operator reverses the handwheel 301 to move the fastener 401 of the rotating shaft 403, along with the old shear blade, away from the hot-rolled heavy-duty shear. The safety pin is then pulled out, and the slide rail 101 is pushed to move the shear blade replacement device along the transmission roller conveyor out of the shear blade's working area. The device is then hoisted back to the ground by a crane, completing the removal of the old shear blade. Using the handwheel 301 to move the fastener 401 and the old shear blade away from the hot-rolled heavy-duty shear prevents them from colliding with the shear blade during removal from the replacement device.

[0054] A1.5: If personnel need to disassemble the upper and lower shear blades simultaneously, they only need to fix the upper and lower shear blades to the fasteners 401 on the upper and lower sides of the rotating shaft 403 simultaneously in step A1.3, and then proceed with the subsequent steps.

[0055] A2: Install new scissor blades

[0056] A2.1: Personnel shall fix the two connecting holes on the new shear blade to the fastener 401 using connecting bolts and connecting nuts; during the fixing process, the stability of the new shear blade on the fastening seat can be ensured by adjusting the abutment 404 and adding shims between the abutment 404 and the fastener 401.

[0057] A2.2: The shear blade replacement device with the new shear blade fixed is hoisted onto the drive roller of the hot rolling heavy shear by a crane, and then the slide rail 101 is pushed so that the safety pin insertion part 2 is connected to the corresponding fixing component on the hot rolling heavy shear through the safety pin, so as to prevent the shear blade replacement device from shifting.

[0058] A2.3: When personnel stand on maintenance platform 1, they crank handwheel 301. Handwheel 301 drives worm gear 303 to rotate via reducer 302. Worm gear 303 drives worm wheel 304 to rotate, thereby driving rotating shaft 403 to rotate. Fastener 401 on one side of rotating shaft 403 deflects at a certain angle along with rotating shaft 403 until the connecting hole on the new shear blade is aligned with the connecting hole of the hot-rolled heavy-duty shear blade. Then, the remaining connecting hole on the new shear blade is fixedly connected to the hot-rolled heavy-duty shear blade with fixing bolts.

[0059] A2.4: Remove the connecting bolts and nuts that fasten fastener 401 to the new shear blade, and use fixing bolts to fasten all the connecting holes of the new shear blade to the hot-rolled heavy-duty shear blade.

[0060] A2.5: The operator reverses the handwheel 301 to move the fastener 401 of the rotating shaft 403 away from the hot-rolled heavy-duty shear, pulls out the safety pin, pushes the slide rail 101 to move the shear blade replacement device out of the working area of ​​the shear blade along the transmission roller conveyor, and then uses a crane to lift the shear blade replacement device to the ground to complete the installation of the new shear blade.

[0061] A2.6: If personnel need to install the upper and lower shear blades simultaneously, in step A2.1, the upper and lower shear blades should be fixedly connected to the fasteners 401 on the upper and lower sides of the rotating shaft 403. Then, in step A2.3, the new upper shear blade on the upper side and the new lower shear blade on the lower side of the rotating shaft 403 should be fastened to the hot rolling mill. Then, proceed with the subsequent steps.

[0062] The hot rolling heavy shear blade replacement device and method of the present invention have the following advantages:

[0063] 1. The shear blade changing device is equipped with a safety pin insertion hole 2, which can be matched with the equipment of hot rolling heavy-duty shears, making it convenient to use. The safety pin insertion hole 2 serves two purposes: firstly, it fixes the shear blade changing device in place; secondly, when the safety pin can be inserted into the safety pin insertion hole 2, it means that the shear blade changing device has moved to the shear blade working area, allowing for shear blade changing operations and enabling rapid positioning.

[0064] 2. The shear blade replacement device is equipped with a maintenance platform 1, which ensures the safety of operators during maintenance. The slide rail 101 of the maintenance platform 1 is placed directly on the transmission roller of the hot rolling heavy shear, eliminating the need to use a hand hoist to move the shear blade replacement device laterally to the working area of ​​the shear blade, making it convenient to use.

[0065] 3. The shear blade changing device is equipped with a shear blade fixing mechanism 4, which works in conjunction with the shear blade adjusting mechanism 3 to simultaneously replace both the upper and lower shear blades, resulting in high labor efficiency. Driven by the shear blade adjusting mechanism 3, the shear blade fixing mechanism 4 can rotate from -60° to 60°, and with the help of the retaining block 404, it can stably secure the shear blade to the shear blade, ensuring high safety. The shear blade adjusting mechanism 3 ensures that the shear blade will not scrape against surrounding equipment when entering and exiting the hot rolling heavy-duty shear, reducing construction difficulty and improving operational safety.

[0066] 4. The shear blade fixing mechanism 4 of the shear blade changing device is equipped with a retaining block 404. The retaining block 404 securely locks the shear blade to the fastener 401, preventing the shear blade from shaking or falling off and causing injury to personnel.

[0067] 5. The use of this blade changing device can effectively improve labor efficiency. Without this blade changing device, it would take 6 people 72 hours to change the upper and lower blades. With this blade changing device, it would only take 4 people 24 hours to change the upper and lower blades, which effectively shortens the operation time and saves maintenance costs.

[0068] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A device for changing a shear blade of a hot-rolling heavy shear, characterized in that: The utility model provides a shearing blade adjusting mechanism and shearing blade fixing mechanism, which are used for adjusting and fixing the shearing blade of a shearing machine. The utility model discloses a shearing blade adjusting mechanism and shearing blade fixing mechanism, which are used for adjusting and fixing the shearing blade of a shearing machine. The shearing blade adjusting mechanism comprises a support assembly, a driving assembly and a transmission assembly. The support assembly comprises a support frame and a support base.

2. The hot mill shear blade changing device of claim 1, wherein: The driving assembly comprises a hand wheel and a speed reducer.

3. The hot mill shear blade changing device of claim 1, wherein: The transmission assembly comprises a worm gear and a worm.

4. The hot mill shear blade changing device of claim 1, wherein: The speed reducer is fixedly connected with the worm.

5. The hot mill shear blade changing device of claim 4, wherein: The worm gear is sleeved on the rotating shaft.

6. The hot mill shear blade changing device of claim 5, wherein: The support base is provided with a connecting block on the side wall. The hand wheel is in transmission connection with the rotating shaft through the speed reducer, the worm and the worm gear. The shearing blade adjusting mechanism and the shearing blade fixing mechanism are used for adjusting and fixing the shearing blade of a shearing machine.

7. The hot mill shear blade changing device of claim 1, wherein: Several counterweights (5) are further included, which are arranged at one end of the inspection platform (1) away from the rotating shaft (403).

8. A method of replacing a hot-rolling heavy-shear blade, characterized by: The steps of the hot rolling heavy shear blade replacement device according to any one of claims 1-7 are as follows: S1: moving the inspection platform (1) to the transmission roller way of the hot rolling heavy shear; S2: operating the shear blade adjusting mechanism (3) to make the shear blade fixing mechanism (4) close to the shear blade to be replaced, and locking and supporting the shear blade to be replaced through the fastener (401); S3: removing the shear blade to be replaced and adjusting the shear blade fixing mechanism (4) through the shear blade adjusting mechanism (3), and moving the inspection platform (1) out of the transmission roller way; S4: locking the new shear blade on the shear blade fixing mechanism (4) through the fastener (401); S5: moving the inspection platform (1) to the transmission roller way of the hot rolling heavy shear, operating the shear blade adjusting mechanism (3) to make the shear blade fixing mechanism (4) close to the shear blade installation position, and installing and fixing the new shear blade to the hot rolling heavy shear; S6: adjusting the shear blade fixing mechanism (4) through the shear blade adjusting mechanism (3), and moving the inspection platform (1) out of the transmission roller way.

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