Tool for replacing lower pinch roll of fixed-width press

Abstract

The utility model discloses a tool for replacing a lower pinch roll of a fixed-width press. The tool comprises a base plate, cargo boom fixing seats are fixed to the two sides of one end of the base plate, the cargo boom fixing seats are rotationally connected with the middle of a cargo boom through cargo boom fixing pins, and a screw hole matched with a fixed hole of a lower pinch roll of a fixed-width press is formed in the front end of the cargo boom; the screw rod end of the temporary fixing bolt for the lower pinch roll of the fixed-width press machine penetrates through the fixed-width press machine lower pinch roll fixing hole and then is in threaded connection with the screw hole, a through hole is formed in the rear end of the cargo boom, and an adjusting pull rod is connected to the base plate. The adjusting pull rod penetrates through the through hole to be fixed to the cargo boom, and an adjusting pull rod adjusting nut used for limiting the position of the cargo boom is connected to the adjusting pull rod. The tool for replacing the lower pinch roll of the fixed-width press is reasonable in structural design, the cargo boom is supported by a cantilever, the width of the tool is reduced, the tool is matched with the maximum opening degree of a side guide plate, the side guide plate of the fixed-width press does not need to be disassembled, the maintenance efficiency is improved, the maintenance time is shortened, and the application prospect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of industry and steel industry, and relates to a tool for replacing the lower pinch rollers of a fixed-width press, in particular to a tool for replacing the lower pinch rollers of a fixed-width press with high operating efficiency. Background Art

[0002] The fixed width press pinch roller is the pinch roller that ensures the normal stepping of the billet during the process of reducing the width of the billet. Severe wear or damage of the pinch roller will cause the fixed width press to fail to work. The replacement cycle of the pinch roller is generally one year. The pinch roller of the wide press has small space, difficult hoisting, long maintenance time, and high labor. At present, the replacement of the pinch roller of the fixed width press is mostly completed by the tooling designed by SMS. The two crane arm support shaft structure of the tooling designed by SMS is a bridge support structure, but this tooling has the following problems: 1) The replacement tooling is too wide, the tooling size is 2.57m wide, 5m long, 0.82m high, 5m long, the outer distance between the outer support seats of the two crane arms is 2.54m, and the maximum opening of the inlet side guide plate is 2.4m. Each time the lower pinch roller is replaced, the inlet side guide plate of the fixed width machine must be removed; 2) The maintenance time is long and the labor is high. The inlet side guide plate must be disassembled when replacing the lower pinch roller, and it takes 40 hours to disassemble and install the side guide plate.

[0003] Therefore, it is of practical significance to develop a tool for replacing the lower pinch roller of a fixed-width press that is easy to operate and has high maintenance efficiency. Utility Model Content

[0004] Since the prior art has the above-mentioned defects, the utility model provides a tool for replacing the lower pinch rollers of a fixed-width press which is easy to operate and has high maintenance efficiency, thereby overcoming the defects of the existing fixed-width press lower pinch roller replacement being time-consuming, labor-intensive and having low maintenance efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tool for replacing the lower pinch roller of a fixed width press, comprising a base plate;

[0007] A boom fixing seat is fixed on both sides of one end of the base plate, and the boom fixing seat is rotatably connected to the middle part of the boom through a boom fixing pin, and the boom can rotate around the boom fixing pin. A screw hole matching the fixing hole of the clamping roller under the fixed-width press is formed at the front end of the boom, and the screw end of the temporary fixing bolt of the clamping roller under the fixed-width press passes through the fixing hole of the clamping roller under the fixed-width press and is threadedly connected to the screw hole. A through hole is formed at the rear end of the boom, and an adjusting rod is connected to the base plate. The adjusting rod passes through the through hole and is fixed to the boom, and an adjusting rod adjusting nut for limiting the position of the boom is threadedly connected to the adjusting rod.

[0008] The operation process of replacing the clamping roller of the fixed width press is as follows:

[0009] After fixing it to the lower pinch roller of the fixed-width press through the screw hole on the lifting arm, the horizontal position of the lower pinch roller of the fixed-width press and the substrate can be adjusted by adjusting the adjusting rod and adjusting nut, that is, lifting the lower pinch roller of the fixed-width press, and then using the fixed-width press conveying roller to send out the fixed-width press lower pinch roller replacement tooling, and then using the lifting device to lift the fixed-width press lower pinch roller replacement tooling away. During installation, fix the replaced lower pinch roller of the fixed-width press to the tooling, lift the tooling onto the fixed-width press conveying roller, use the fixed-width press conveying roller to send the tooling to the installation position, and then adjust the adjusting rod and adjusting nut to lower the lifting arm, that is, lower the fixed-width press conveying roller, remove the temporary fixing bolts of the fixed-width press lower pinch roller that fix the fixed-width press conveying roller, and complete the replacement and installation operation.

[0010] The utility model discloses a tool for replacing the lower clamping roller of a fixed-width press, and the structure is reasonably designed. The boom adopts a cantilever support form, and compared with the existing technology of the bridge support structure (the center distance of the working positioning bolts of the boom is 2.2m, and the outer distance between the outer support seats of the two booms is 2.54m), the tool width is significantly reduced (the tool width is 2.33m), so that it can match the maximum opening of the side guide plate, and there is no need to disassemble the side guide plate of the fixed-width machine entrance, which can significantly reduce the workload of maintenance work, improve maintenance efficiency, shorten maintenance time, and has good application prospects.

[0011] As the preferred technical solution:

[0012] As described above, in the tooling for replacing the lower pinch roller of a fixed-width press, the base plate is provided with a plurality of base plate lifting hooks dispersedly arranged on the base plate, so as to facilitate the lifting of the tooling at a later stage.

[0013] In the above-mentioned tooling for replacing the lower pinch roller of a fixed-width press, two lifting arms are located on both sides of a base plate, and the positions of the two lifting arms and the screw holes thereon match the positions of the fixing holes on the lower pinch roller of the fixed-width press to be replaced.

[0014] A tool for replacing the lower pinch roller of a fixed width press as described above, wherein the temporary fixing bolts of the lower pinch roller of the fixed width press include a temporary fixing screw rod of the lower pinch roller of the fixed width press and a temporary fixing nut of the lower pinch roller of the fixed width press;

[0015] The temporary fixing screw of the lower pinch roller of the fixed-width press is threadedly connected to the screw hole, the temporary fixing nut of the lower pinch roller of the fixed-width press is threadedly connected to the temporary fixing screw of the lower pinch roller of the fixed-width press, and the lower pinch roller of the fixed-width press is restricted on the temporary fixing screw of the lower pinch roller of the fixed-width press by the temporary fixing nut of the lower pinch roller of the fixed-width press.

[0016] A tool for replacing the lower pinch roller of a fixed-width press as described above, wherein an adjusting tie rod base is fixed on the base plate;

[0017] One end of the adjusting pull rod is movably connected to the adjusting pull rod base.

[0018] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0019] The above utility model has the following advantages or beneficial effects:

[0020] The utility model discloses a tool for replacing the lower clamping roller of a fixed-width press, and the structure is reasonably designed. The lifting arm adopts a cantilever support form. Compared with the existing technology of the bridge support structure (the center distance of the working positioning bolts of the lifting arm is 2.2m, and the outer side distance of the outer support seats of the two lifting arms is 2.54m), the tool width is significantly reduced (the tool width is 2.33m), so that it can match the maximum opening of the side guide plate, and there is no need to disassemble the side guide plate at the entrance of the fixed-width press, which can significantly reduce the workload of maintenance work (the number of maintenance personnel is reduced from 11 to 6), improve maintenance efficiency, shorten maintenance time (from 18 hours to 10 hours), and reduce safety risks at the same time, avoid the difficulty of lifting when disassembling the side guide plate and the safety hazards of using hydraulic tooling, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0022] Figure 1 It is a schematic diagram of the tooling replacement operation of the lower pinch roller of the fixed width press of the utility model;

[0023] Figure 2 for Figure 1 Right view of;

[0024] Figure 3 It is a structural schematic diagram of the lower pinch roller replacement tooling of the fixed width press of the utility model;

[0025] Figure 4 It is a top view of the tooling for replacing the lower pinch roller of the fixed width press of the utility model;

[0026] Figure 5 for Figure 4 AA section view;

[0027] Among them, 1-conveying roller of fixed width press, 2-upper pinch roller of fixed width press, 3-lower pinch roller of fixed width press, 4-side guide plate I of fixed width press, 5-side guide plate II of fixed width press, 6-temporary fixing bolt of lower pinch roller of fixed width press, 61-temporary fixing screw of lower pinch roller of fixed width press, 62-temporary fixing nut of lower pinch roller of fixed width press, 7-replacing tooling of lower pinch roller of fixed width press, 71-base plate, 72-base plate lifting hook, 73-crane arm, 74-crane arm fixing pin, 75-adjusting rod, 76-adjusting rod adjusting nut, 77-crane arm fixing seat. DETAILED DESCRIPTION

[0028] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0029] Example 1

[0030] A tool for replacing the lower pinch roll of a fixed width press, such as Figures 3 to 5 As shown, it includes a substrate 71;

[0031] The base plate 71 is provided with a plurality of base plate hoisting hooks 72 which are dispersedly arranged on the base plate 71;

[0032] A boom fixing seat 77 is fixed to both sides of one end of the base plate 71. The boom fixing seat 77 is rotatably connected to the middle part of the boom 73 through the boom fixing pin 74. A screw hole matching the fixing hole of the lower pinch roller of the fixed-width press is opened at the front end of the boom 73 (the two booms 73 are located on both sides of the base plate 71 and the positions of the two booms 73 and the screw holes thereon match the positions of the fixing holes on the lower pinch roller of the fixed-width press to be replaced). The screw end of the temporary fixing bolt 6 of the lower pinch roller of the fixed-width press passes through the fixing hole of the lower pinch roller of the fixed-width press and is threadedly connected to the screw hole (the temporary fixing bolt 6 of the lower pinch roller of the fixed-width press includes a temporary fixing screw 61 of the lower pinch roller of the fixed-width press and a The feed roller temporary fixing nut 62, the lower clamping roller temporary fixing screw 61 of the fixed width press is threadedly connected with the screw hole, the lower clamping roller temporary fixing nut 62 of the fixed width press is threadedly connected with the lower clamping roller temporary fixing screw 61 of the fixed width press and the lower clamping roller 3 of the fixed width press is restricted on the lower clamping roller temporary fixing screw 61 of the fixed width press by the lower clamping roller temporary fixing nut 62 of the fixed width press), a through hole is opened at the rear end of the lifting arm 73, an adjusting tie rod base is fixed on the base plate 71, one end of the adjusting tie rod 75 is movably connected with the adjusting tie rod base, the adjusting tie rod 75 passes through the through hole and is fixed to the lifting arm 73, and the adjusting tie rod adjusting nut 76 for limiting the position of the lifting arm 73 is threadedly connected to the adjusting tie rod 75.

[0033] The following are the steps for replacing the clamping rollers of the fixed width press: Figures 1-2 shown):

[0034] (1) The side guide plate I 4 of the width setting machine and the side guide plate II 5 of the width setting press are opened to the maximum position, with an opening of 2400 mm, the upper pinch roller is raised to the high position, and the safety pin is inserted;

[0035] (2) placing the lower pinch roller replacement tool 7 of the fixed width press on the conveying roller 1 of the fixed width press;

[0036] (3) Remove the fixing bolts on the lower pinch roller 3 of the fixed width press, and use a crane to raise the lower pinch roller 3 of the fixed width press by 412 mm;

[0037] (4) Turn the adjusting rod adjusting nut 76 to fix the lower pinch roller 3 of the fixed width press to the crane arm 73 using the temporary fixing bolt 6 of the lower pinch roller of the fixed width press;

[0038] (5) Turn the fixed width press conveyor roller 1 or use a chain to move the fixed width press lower pinch roller replacement tool 7 back out 2000 mm;

[0039] (6) Use a crane to lift the lower pinch roller 3 of the fixed-width press.

[0040] The above-mentioned fixed width press lower pinch roller replacement tooling has been used on site, and its basic parameters are as follows:

[0041] 1. Effective lifting distance of lifting arm tie rod: 200mm

[0042] 2. Overall dimensions: 2.33m wide, 5m long, 0.83m high

[0043] 3. Lifting arm adjustment angle: 10°

[0044] 4. Own weight: 7.6t

[0045] 5. Working load: 4.5t. Of course, technicians in this field can adjust the parameters of the pinch roller replacement tooling of the fixed width press according to actual needs to adapt to different application scenarios.

[0046] It has been verified that the tooling for replacing the lower clamping roller of the fixed-width press of the utility model has a reasonable structural design, and the lifting arm adopts a cantilever support form. Compared with the existing technology of the bridge support structure (the center distance of the working positioning bolts of the lifting arm is 2.2m, and the outer side distance of the outer support seats of the two lifting arms is 2.54m), the tooling width is significantly reduced (the tooling width is 2.33m), so that it can match the maximum opening of the side guide plate, and there is no need to disassemble the side guide plate of the fixed-width machine entrance. It can significantly reduce the workload of maintenance work (the number of maintenance personnel is reduced from 11 to 6), improve maintenance efficiency, shorten maintenance time (from 18 hours to 10 hours), and at the same time reduce safety risks, avoid the difficulty of lifting when disassembling the side guide plate and the safety hazards of using hydraulic tooling, and has good application prospects.

[0047] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0048] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A tool for replacing the lower pinch roll of a fixed width press, characterized in that: including a substrate; A boom fixing seat is fixed on both sides of one end of the base plate, and the boom fixing seat is rotatably connected to the middle part of the boom through a boom fixing pin. A screw hole matching the fixing hole of the clamping roller under the fixed-width press is formed at the front end of the boom, and the screw end of the temporary fixing bolt of the clamping roller under the fixed-width press passes through the fixing hole of the clamping roller under the fixed-width press and is threadedly connected to the screw hole. A through hole is formed at the rear end of the boom, and an adjusting rod is connected to the base plate. The adjusting rod passes through the through hole and is fixed to the boom, and an adjusting nut for limiting the position of the boom is threadedly connected to the adjusting rod.

2. The tooling for replacing the lower pinch roll of a fixed width press according to claim 1, characterized in that: The base plate is provided with a plurality of base plate hoisting hooks which are dispersedly arranged on the base plate.

3. The tooling for replacing the lower pinch roll of a fixed width press according to claim 1, characterized in that: The two lifting arms are located at two sides of the base plate, and the positions of the two lifting arms and the screw holes thereon match the positions of the fixing holes on the lower pinch roller of the fixed width press to be replaced.

4. The tooling for replacing the lower pinch roll of a fixed width press according to claim 1, characterized in that: The temporary fixing bolts of the lower pinch roller of the fixed width press include a temporary fixing screw rod of the lower pinch roller of the fixed width press and a temporary fixing nut of the lower pinch roller of the fixed width press; The temporary fixing screw of the lower pinch roller of the fixed-width press is threadedly connected to the screw hole, the temporary fixing nut of the lower pinch roller of the fixed-width press is threadedly connected to the temporary fixing screw of the lower pinch roller of the fixed-width press, and the lower pinch roller of the fixed-width press is restricted on the temporary fixing screw of the lower pinch roller of the fixed-width press by the temporary fixing nut of the lower pinch roller of the fixed-width press.

5. The tooling for replacing the lower pinch roll of a fixed width press according to claim 1, characterized in that: An adjusting rod base is fixed on the base plate; One end of the adjusting pull rod is movably connected to the adjusting pull rod base.

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