Flying shear blade lifting appliance and replacement method

Abstract

The invention provides a flying shear blade lifting appliance and a replacement method, the flying shear blade lifting appliance comprises a cross beam and a plurality of lifting lugs, one end of the cross beam is provided with a fixed end, the other end of the cross beam is provided with a movable end, the fixed end and the movable end are symmetrically arranged, the fixed end comprises a first positioning pin, the movable end comprises a second positioning pin, and the first positioning pin and the second positioning pin are matched with each other. The first positioning pin and the second positioning pin are used for being connected with a shear blade, the lifting lug is arranged on the cross beam, and the shear blade replacing device has the advantages that shear blade replacing operation steps are optimized, the problems that dismounting, mounting and lifting are difficult, a large number of workers need to work together, the replacing time is long, and the inspection and maintenance progress is affected are solved, and the maintenance efficiency is improved. And the safety risk when the shear blade is remounted to the flying shear rotating hub cutter groove is eliminated.

Description

Technical Field

[0001] The present invention relates to the field of hoisting equipment, and particularly to a flying shear blade sling. Background Art

[0002] The rotary drum flying shear on the hot continuous rolling production line is an important equipment on the hot continuous rolling production line, mainly used to cut off the irregular and relatively low-temperature heads and tails of the intermediate billets between rough rolling and finish rolling, ensuring the smooth threading of the finish rolling mill and the stability of tail rolling. The purpose of replacing the flying shear blades is to replace the blades that are severely worn at the end of their service life and do not meet the shear control standard requirements for coincidence and clearance. Currently, the replacement of the rotary drum flying shear blades on the hot continuous rolling production line still uses the fixing bolts at the blade ends, with shackles and wire ropes installed on the bolts for disassembly and hoisting. This method has disadvantages such as insecure fixation, many operation steps, difficult installation, and a large number of cooperating operators, which does not meet the current requirements of the iron and steel industry for cost savings and efficiency improvement. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a flying shear blade sling, which is used to solve the technical problem that the current replacement of the rotary drum flying shear blades on the hot continuous rolling production line still uses the fixing bolts at the blade ends, and this method has disadvantages such as insecure fixation, many operation steps, difficult installation, and a large number of cooperating operators, which does not meet the current requirements of the iron and steel industry for cost savings and efficiency improvement.

[0004] To achieve the above purpose and other related purposes, the present invention provides a flying shear blade sling, including:

[0005] A cross beam, with a fixed end at one end of the cross beam and a movable end at the other end, and the fixed end and the movable end are symmetrically arranged;

[0006] The fixed end includes a first positioning pin, and the movable end includes a second positioning pin, and the first positioning pin and the second positioning pin are used to connect with the blade;

[0007] A plurality of lifting lugs, which are arranged on the cross beam.

[0008] The advantages of adopting the above technical solutions are that in this application, a fixed end is arranged at one end of the cross beam, a movable end is arranged at the other end, and lifting lugs are used for hoisting. It is simple to process and manufacture, practical and convenient, with low manufacturing cost, realizes assembly hoisting within the equipment body, improves efficiency and ensures hoisting safety.

[0009] Optionally, the fixed end further includes a support plate, the length direction of the support plate is perpendicular to the cross beam, the first positioning pin is installed on the support plate, and the first positioning pin faces the movable end.

[0010] Optionally, the movable end head includes a connecting plate, the second positioning pin is installed on the connecting plate, the second positioning pin faces the first positioning pin, a plug-in portion is further provided on the connecting plate, and the corresponding end of the cross beam is inserted into the plug-in portion.

[0011] Optionally, the plug-in portion includes an upper clamping plate and a lower clamping plate. The upper clamping plate and the lower clamping plate are located on the same side of the connecting plate. The plug-in portion is formed between the upper clamping plate and the lower clamping plate, and the upper clamping plate is bolted to the cross beam.

[0012] Optionally, a positioning hole is provided at one end of the cross beam, and a mounting hole is further provided on the movable end head. The positioning hole and the mounting hole correspond to each other, and the movable end head is fixed by bolts passing through the mounting hole and the positioning hole in sequence.

[0013] Optionally, the movable end head includes a plug-in portion and a positioning portion. The corresponding end of the cross beam is for inserting into the plug-in portion, and a locking unit is further provided on the plug-in portion. The locking unit is used to fixedly connect the movable end head and the cross beam.

[0014] Optionally, the first positioning pin and the second positioning pin are at the same horizontal height.

[0015] The present invention also proposes a method for replacing the flying shear blade, including the above-mentioned flying shear blade lifting tool, and comprising the following steps:

[0016] Preparation stage: Rotate the flying shear hub to the angle where the blade needs to be replaced, use a pressure pump to pressurize to eject the inclined pressure block, then remove the fastening nut and take out the inclined pressure block;

[0017] Lifting tool installation: The first positioning pin of the fixed end head penetrates into the blade pin hole, then the second positioning pin of the movable end head penetrates into the blade pin hole on the other side, and then bolts are sequentially passed through the upper clamping plate, the cross beam and the lower clamping plate for connection;

[0018] Blade lifting out: Use a special lifting tool to lift out the flying shear blade lifting tool to be replaced and the installed blade from the blade groove;

[0019] Blade groove cleaning: Necessarily clean the blade groove to facilitate the installation of a new blade;

[0020] New blade preparation: Measure the size of the new blade and select a suitable gasket to install into the blade groove;

[0021] New blade installation: Install the new blade on the flying shear blade lifting tool according to the method in the step of lifting tool installation, hoist the new blade into the blade groove, and then remove the new blade from the flying shear blade lifting tool to achieve quick disassembly and assembly;

[0022] Shear blade fixing: Reinstall the inclined pressure block and install the fastening nut. Release the pressure of the pressure pump to retract the inclined pressure block to fix the shear blade;

[0023] Inspection and adjustment: Measure the clearance and coincidence degree of the shear blade to ensure that the control standard is met.

[0024] As described above, a flying shear blade hanger of the present invention has the following beneficial effects: Optimize the operation steps of shear blade replacement, solve the problems of difficult disassembly, installation and lifting, requiring a large number of personnel to work together, resulting in a long replacement time and affecting the inspection and maintenance progress, and eliminate the safety risks when the shear blade is reinstalled into the flying shear hub cutter groove. Brief Description of the Drawings

[0025] Figure 1 It shows a schematic structural diagram in an embodiment of the present invention;

[0026] Figure 2 It shows a schematic structural diagram of the movable end in an embodiment of the present invention;

[0027] Figure 3 It shows a schematic sectional structural diagram of the movable end in an embodiment of the present invention.

[0028] Description of Part Numbers

[0029] 1 Cross beam

[0030] 2 Fixed end

[0031] 201 First positioning pin

[0032] 202 Support plate

[0033] 3 Movable end

[0034] 301 Second positioning pin

[0035] 302 Connecting plate

[0036] 303 Upper clamping plate

[0037] 304 Lower clamping plate

[0038] 4 Lifting lug Detailed Embodiment

[0039] The following specific examples illustrate the implementation manners 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. The present invention can also be implemented or applied through other different specific implementation manners, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0040] Please refer to Figures 1 to 3It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. The components shown in the illustrations only relate to those relevant to the present invention, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component during implementation can be arbitrarily changed, and the layout type of its components may also be more complex. The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope in which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0041] Please refer to Figures 1 through 3 as shown, the present invention provides a flying shear blade lifting device, including:

[0042] A cross beam 1, with a fixed end 2 provided at one end of the cross beam 1, and a movable end 3 provided at the other end of the cross beam 1. The fixed end 2 and the movable end 3 are symmetrically arranged;

[0043] The fixed end 2 includes a first positioning pin 201, and the movable end 3 includes a second positioning pin 301. The first positioning pin 201 and the second positioning pin 301 are used to connect with the shear blade;

[0044] A plurality of lifting lugs 4, and the lifting lugs 4 are arranged on the cross beam 1.

[0045] Exemplarily, the fixed end 2 further includes a support plate 202. The length direction of the support plate 202 is perpendicular to the cross beam 1. The first positioning pin 201 is installed on the support plate 202, and the first positioning pin 201 faces the movable end 3.

[0046] It should also be noted that in this application, a fixed end 2 is provided at one end of the cross beam, and a movable end 3 is provided at the other end. It is simple to process and manufacture, practical and convenient, with low manufacturing cost, realizes assembly and lifting within the equipment body, improves efficiency and ensures lifting safety.

[0047] Exemplarily, the movable end 3 includes a connecting plate 302, the second positioning pin 301 is installed on the connecting plate 302, the second positioning pin 301 faces the first positioning pin 201, a plug-in portion is further provided on the connecting plate 302, and the corresponding end of the cross beam 1 is inserted into the plug-in portion.

[0048] It should also be noted that this design enables the movable end 3 to be more flexibly connected to and disassembled from the cross beam 1, facilitating the replacement and maintenance of the shear blades. Through the cooperation of the second positioning pin 301 and the first positioning pin 201, the accuracy and stability of the movable end 3 during connection can be ensured.

[0049] Exemplarily, the plug-in portion includes an upper clamping plate 303 and a lower clamping plate 304. The upper clamping plate 303 and the lower clamping plate 304 are located on the same side of the connecting plate 302. The plug-in portion is formed between the upper clamping plate 303 and the lower clamping plate 304, and the upper clamping plate 303 is bolted to the cross beam 1.

[0050] It should also be noted that the design of the upper clamping plate 303 and the lower clamping plate 304 not only provides a plug-in space but also enhances the connection firmness through bolt connection. This structure is simple and easy to implement, facilitating installation and disassembly, while ensuring the stability and reliability of the connection.

[0051] Exemplarily, a positioning hole is provided at one end of the cross beam 1, and an installation hole is further provided on the movable end 3. The positioning hole and the installation hole correspond to each other, and the movable end 3 is fixed by bolts sequentially passing through the installation hole and the positioning hole.

[0052] It should also be noted that this fixing method further enhances the connection strength between the cross beam 1 and the movable end 3, ensuring that there will be no loosening or falling off during use. At the same time, the design of the positioning hole and the installation hole also makes the installation process simpler and faster.

[0053] Exemplarily, the movable end 3 includes a plug-in portion and a positioning portion. The corresponding end of the cross beam 1 is used to be inserted into the plug-in portion, and a locking unit is further provided on the plug-in portion. The locking unit is used to fixedly connect the movable end 3 to the cross beam 1.

[0054] It should also be noted that this overall design makes the movable end 3 more stable and reliable during connection, and the design of the locking unit also enhances the connection firmness. At the same time, the cooperation of the plug-in portion and the positioning portion also makes the installation process simpler and faster, improving work efficiency.

[0055] Exemplarily, the first positioning pin 201 and the second positioning pin 301 are at the same horizontal height.

[0056] It should also be noted that this design ensures that the movable end 3 can be accurately aligned with the cross beam 1 during connection, avoiding connection instability or damage caused by inconsistent heights. At the same time, this design also makes the installation process simpler and faster, improving work efficiency and accuracy.

[0057] The present invention also proposes a method for replacing the flying shear blades, including the above-mentioned flying shear blade lifting tool, and comprising the following steps:

[0058] Preparation stage: Rotate the flying shear hub to the angle where the blade needs to be replaced, use a pressure pump to pressurize to eject the inclined pressure block, then remove the fastening nut and take out the inclined pressure block;

[0059] Lifting tool installation: The first positioning pin 201 of the fixed end 2 is inserted into the blade pin hole, then the second positioning pin 301 of the movable end 3 is inserted into the blade pin hole on the other side, and then bolts are sequentially passed through the upper clamping plate 303, the cross beam 1 and the lower clamping plate 304 for connection;

[0060] Blade lifting out: Use a special lifting tool to lift out the flying shear blade lifting tool to be replaced and the installed blade from the blade groove;

[0061] Blade groove cleaning: Necessarily clean the blade groove for installing a new blade;

[0062] New blade preparation: Measure the size of the new blade and select a suitable gasket to install into the blade groove;

[0063] New blade installation: Install the new blade on the flying shear blade lifting tool according to the method in the step of lifting tool installation, hoist the new blade into the blade groove, and then remove the new blade from the flying shear blade lifting tool to achieve quick disassembly and assembly;

[0064] Blade fixing: Reinstall the inclined pressure block and install the fastening nut, release the pressure of the pressure pump to retract the inclined pressure block to fix the blade;

[0065] Inspection and adjustment: Measure the clearance and coincidence degree of the blade to ensure that the control standard is met.

[0066] This method optimizes the operation steps of blade replacement through the use of a special lifting tool, reduces the difficulty of disassembly, installation and hoisting, reduces the number of required personnel, shortens the replacement time, improves the inspection and maintenance progress, and eliminates the safety risk when the blade is reinstalled into the flying shear hub blade groove.

[0067] In summary, by adopting a flying shear blade lifting tool of the present invention, the operation steps of blade replacement are optimized, the problems of difficult disassembly, installation and hoisting, requiring a large number of personnel to work together, resulting in a long replacement time and affecting the inspection and maintenance progress are solved, and the safety risk when the blade is reinstalled into the flying shear hub blade groove is eliminated.

[0068] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field to which the present invention pertains without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A flying shear blade lifting device, used for lifting the shear blade, characterized in that: include: A crossbeam, wherein a fixed end is provided at one end of the crossbeam, and a movable end is provided at the other end of the crossbeam, and the fixed end and the movable end are symmetrically arranged; The fixed end includes a first positioning pin, and the movable end includes a second positioning pin, and the first positioning pin and the second positioning pin are used to connect with the shear blade; A plurality of lifting ears are provided on the cross beam.

2. A flying shear blade hanger according to claim 1, characterized in that: The fixed end also includes a support plate, the length direction of the support plate is perpendicular to the crossbeam, the first positioning pin is installed on the support plate, and the first positioning pin faces the movable end.

3. A flying shear blade hanger according to claim 2, characterized in that: The movable end includes a connecting plate, the second positioning pin is installed on the connecting plate, the second positioning pin faces the first positioning pin, and the connecting plate is also provided with an inserting portion, and the end corresponding to the crossbeam is inserted into the inserting portion.

4. A flying shear blade hanger according to claim 3, characterized in that: The plug-in portion comprises an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are located on the same side of the connecting plate, the plug-in portion is formed between the upper clamping plate and the lower clamping plate, and the upper clamping plate is bolted to the crossbeam.

5. A flying shear blade hanger according to claim 4, characterized in that: A positioning hole is provided at one end of the crossbeam, and a mounting hole is also provided on the movable end head. The positioning hole and the mounting hole correspond to each other, and the movable end head is fixed by bolts passing through the mounting hole and the positioning hole in sequence.

6. A flying shear blade hanger according to claim 5, characterized in that: The movable end comprises an inserting portion and a positioning portion, and the end portion corresponding to the cross beam is used to be inserted into the inserting portion. The inserting portion is also provided with a locking unit, and the locking unit is used to fix the movable end to the cross beam.

7. A flying shear blade hanger according to claim 6, characterized in that: The first positioning pin and the second positioning pin are located at the same level.

8. A method for replacing a flying shear blade, comprising the flying shear blade hanger according to any one of claims 4 to 7, characterized in that: The following steps are involved: Preparation stage: turn the flying shear hub to the angle where the shear blade needs to be replaced, use a pressure pump to pressurize the inclined pressure block to pop out, then remove the fastening nut and take out the inclined pressure block; Installation of the sling: insert the first positioning pin of the fixed end into the shear blade pin hole, then insert the second positioning pin of the movable end into the shear blade pin hole on the other side, and then insert the bolts through the upper clamping plate, the crossbeam and the lower clamping plate in sequence to connect; Lifting out the shear blade: Use a special lifting device to lift the shear blade that needs to be replaced and the installed shear blade out of the knife groove; Knife groove cleaning: Clean the knife groove as necessary to install the new shear blade; Preparation of new shear blade: measure the size of the new shear blade and select the appropriate gasket to install it in the blade groove; Installation of new shear blade: Install the new shear blade on the shear blade hanger according to the method in the hanger installation step, hang the new shear blade into the blade groove, and then remove the new shear blade from the shear blade hanger to achieve quick disassembly and installation; Fix the shear blade: reinstall the inclined pressure block and install the fastening nut, release the pressure from the booster pump to retract the inclined pressure block to fix the shear blade; Check and adjust: Measure the clearance and overlap of the shear blades to ensure that the control standards are met.

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