Special device for replacing shear blade of cold shearing machine

Abstract

The utility model discloses a special device for replacing a shear blade of a cold shearing machine, which comprises a vehicle body, two upper knife rests and two lower knife rests, the two upper knife rests are respectively arranged on the vehicle body through a lifting mechanism, and the two lower knife rests are respectively arranged on two sides of the two upper knife rests. According to the special device for replacing the shear blade of the cold shear, the upper knife rest can adapt to different positions where the upper shear blade stays each time through the lifting mechanism, the upper knife rest is close to the upper shear blade as far as possible, personnel replacement is facilitated, personnel burden is reduced, and the impact damage hidden danger caused by gravity falling of the upper shear blade is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold shears, and more specifically relates to a special device for replacing shear blades of cold shears. Background Art

[0002] The cold shear is a device that cuts and trims the rolled pieces coming off the cooling bed. It is a key equipment in the finishing area of ​​the bar production line. The shearing capacity of the cold shear and the good or bad operation of the equipment are one of the key factors restricting the production capacity of steel rolling. It is mainly composed of: shear blade, crankshaft, pulley, motor, brake, clutch. Its flywheel is installed on the main shaft, and the motor drives the flywheel to operate through the belt. When shearing, the clutch connects the main shaft with the flywheel, so that the reducer drives the eccentric wheel to operate, and the shear frame equipped with the shear blade moves downward to complete the shearing action. The deceleration part adopts high-precision hardened tooth surface two-stage gear transmission, which has stable transmission and low noise; it is equipped with advanced pneumatic brake and clutch devices; it has perfect dry oil lubrication, thin oil lubrication, pneumatic and hydraulic systems; the convenience of the shear blade replacement mechanism directly affects the efficiency of shear blade replacement and the labor intensity of workers.

[0003] The existing scheme is that when the cold shearing machine needs to replace the shear blade, the shear blade changing trolley is driven to the position directly below the shear blade of the cold shearing machine. The shear blade changing trolley is moved on the track by pushing the trolley structure through the hydraulic cylinder. The upper and lower shear blades of the cold shearing machine are fixed shear blades and their positions do not change. The trolley can be driven just to the position of the lower shear blade, and then the lower shear blade fixing bolts are removed, and the lower shear blade falls on the shear blade changing trolley. Then the shear blade changing trolley is pulled out, the old shear blade is hung from the shear blade changing trolley, the new shear blade is placed, and the shear blade changing trolley is driven to the lower shear blade position to install the fixing bolts. In this way, the lower shear blade is replaced, and the shear blade changing trolley is also driven to the upper shear blade position. Since the upper shear blade is a movable shear blade, the stopping position is different each time, so the shear blade changing trolley can only be driven to the position directly below the upper shear blade, and then the upper shear blade is replaced in the same way as the lower shear blade.

[0004] The position of the shear blade roller on the existing shear blade changing trolley is fixed in elevation, but the stop position of the upper shear blade is a variable position. It cannot be guaranteed that the stop position of the upper shear blade can be consistent with the position of the shear blade changing trolley roller every time the shear blade is changed, resulting in difficulty in replacing the upper shear blade. Utility Model Content

[0005] The utility model aims to provide a special device for changing the shear blade of a cold shearing machine in view of the deficiencies in the prior art, so as to solve the problem that the stop position of the existing upper shear blade is a variable position, and it cannot be guaranteed that the stop position of the upper shear blade can be consistent with the position of the roller of the shear blade changing trolley each time the shear blade is changed, resulting in difficulty in changing the upper shear blade.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a special device for changing the cutting blade of a cold shearing machine, comprising:

[0007] Vehicle body;

[0008] Two upper tool racks, the two upper tool racks are respectively arranged on the vehicle body through a lifting mechanism;

[0009] Two lower tool racks are respectively arranged on both sides of the two upper tool racks.

[0010] Optionally, the upper tool holder comprises:

[0011] An upper knife groove, wherein the upper knife groove is a through groove structure, and a first limiting mechanism is respectively provided at both ends;

[0012] Two rolling rows, a plurality of rollers are arranged at intervals on the rolling rows, the two rolling rows are symmetrically arranged at the notches of the upper knife grooves, and the rollers of the two rolling rows form a V-shaped structure.

[0013] Optionally, the first limiting mechanism includes a plug, one end of which passes through the side wall of the upper knife groove and is inserted into the upper knife groove to limit the upper cutting edge in the V-shaped structure.

[0014] Optionally, the upper knife groove is further provided with an extension portion, and the roller is also provided on the extension portion.

[0015] Optionally, the lower tool holder comprises:

[0016] A lower knife groove is provided with a plurality of rollers at intervals in the lower knife groove, and a second limiting mechanism is provided at both ends.

[0017] Optionally, the vehicle body includes a base and a pedestal, the pedestal is provided with running wheels, the pedestal is arranged at the upper end of the pedestal via an elastic buffer mechanism, and the upper tool holder and the lower tool holder are arranged on the pedestal.

[0018] Optionally, a positioning bolt is provided on the base.

[0019] Optionally, the lifting mechanism comprises:

[0020] Two shells, the two shells are arranged at intervals;

[0021] Two vertical screws, each of which is arranged on each of the housings;

[0022] A horizontal screw, one end of which is provided with a driving wheel, and the other end of which passes through the two shells in sequence and is connected with the two vertical screws.

[0023] Optionally, it further comprises a guide rod and a guide sleeve, wherein the guide rod and the guide sleeve are respectively arranged on the vehicle body and the upper tool holder.

[0024] Optionally, the load capacity of the lifting mechanism is greater than 1.5 times the weight of the upper shear blade.

[0025] The utility model provides a special device for changing cutting blades of a cold shearing machine, and its beneficial effects are:

[0026] The special device for changing the shear blade of the cold shear machine enables the upper knife holder to adapt to the different positions of the upper shear blade each time through the lifting mechanism, so that the upper knife holder is as close to the upper shear blade as possible, which is convenient for personnel to replace, reduces the burden on personnel and avoids the hidden danger of impact damage caused by the gravity fall of the upper shear blade.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0029] Figure 1 The present invention shows a schematic structural diagram of a special device for replacing cutting blades of a cold shearing machine according to an embodiment of the present invention.

[0030] Figure 2 A side structural schematic diagram of a special device for replacing cutting blades of a cold shearing machine according to an embodiment of the utility model is shown.

[0031] Figure 3 The present invention shows a schematic structural diagram of a lifting mechanism of a special device for changing cutting blades of a cold shearing machine according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Base; 2. Base; 3. Elastic buffer mechanism; 4. Upper tool holder; 5. Lower tool holder; 6. Roller; 7. Lifting mechanism; 8. Extension part; 9. Plug; 10. Positioning bolt; 11. Guide rod. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0035] like Figure 1-3 As shown, a special device for changing cutting blades of a cold shearing machine comprises:

[0036] Vehicle body;

[0037] Two upper tool racks 4, the two upper tool racks 4 are respectively arranged on the vehicle body through a lifting mechanism 7;

[0038] Two lower tool racks 5 are respectively arranged on both sides of the two upper tool racks 4 .

[0039] Specifically, the lifting mechanism 7 enables the upper tool holder 4 to adapt to the different positions of the upper shear blade each time, so that the upper tool holder 4 is as close to the upper shear blade as possible, which is convenient for personnel replacement, reduces personnel burden and avoids the hidden danger of impact damage caused by the upper shear blade falling due to gravity.

[0040] Furthermore, the two upper tool holders 4 can be kept at different heights, and the lower tool holder 5 can also be provided with a lifting mechanism 7 to adapt to use.

[0041] In this embodiment, the upper tool holder 4 includes:

[0042] The upper knife groove is a through groove structure, and the first limiting mechanism is respectively arranged at both ends;

[0043] There are two rolling rows, on which a plurality of rollers 6 are arranged at intervals. The two rolling rows are symmetrically arranged at the notches of the upper knife grooves, and the rollers 6 of the two rolling rows form a V-shaped structure.

[0044] Specifically, the upper shear blade is placed in the upper knife groove, and the rolling row forms a V-shape, which facilitates the upper shear blade to be stably transported and facilitates the upper shear blade to move and adjust its position in the upper knife groove. The first limiting mechanism prevents the upper shear blade from slipping.

[0045] In this embodiment, the first limiting mechanism includes a plug 9, one end of which passes through the side wall of the upper knife groove and is inserted into the upper knife groove to limit the upper cutting edge in the V-shaped structure.

[0046] Specifically, the plug 9 is used to prevent the upper cutting blade from moving in the upper cutting groove.

[0047] In this embodiment, the upper knife groove is further provided with an extension portion 8 , and the extension portion 8 is also provided with a roller 6 .

[0048] Specifically, the extension part 8 is exposed on the vehicle body, and the extension part 8 is adapted to the transportation of the upper shear blade and the distance gap between the repair platform and the upper knife groove.

[0049] In this embodiment, the lower tool holder 5 comprises:

[0050] A lower knife groove is provided with a plurality of rollers at intervals in the lower knife groove, and a second limiting mechanism is provided at both ends.

[0051] Specifically, the second limiting mechanism is also a plug 9, which facilitates the movement of the lower shear blade through the roller.

[0052] In this embodiment, the vehicle body includes a base 2 and a pedestal 1 , the pedestal 1 is provided with running wheels, the base 2 is arranged at the upper end of the pedestal 1 through an elastic buffer mechanism 3 , and an upper tool holder 4 and a lower tool holder 5 are arranged on the base 2 .

[0053] Specifically, the elastic buffer mechanism 3 is a spring adapted to buffer the gravity impact when the upper shear blade falls off.

[0054] In this embodiment, a positioning bolt 10 is provided on the base 1 .

[0055] Specifically, the cold shearing machine and the maintenance area are provided with positioning holes that cooperate with the positioning bolts 10 to prevent the vehicle body from moving during the disassembly, assembly and transportation process.

[0056] In this embodiment, the lifting mechanism 7 includes:

[0057] Two shells, the two shells are arranged at intervals;

[0058] two vertical screws, each vertical screw being disposed on each housing;

[0059] A horizontal screw rod, one end of which is provided with a driving wheel, and the other end of which passes through two outer shells in sequence and is connected with two vertical screw rods.

[0060] Specifically, the lifting and lowering movement of the upper tool holder 4 is realized by a worm gear mechanism, and the two bases 1 are arranged along the length direction of the upper tool holder 4 to ensure that the lifting and lowering of the upper tool holder 4 is stable.

[0061] Further, the housing and the vertical screw are detachably connected to the vehicle body 1 and the upper tool holder 4 through flanges and bolts.

[0062] In this embodiment, a guide rod 11 and a guide sleeve are further included, and the guide rod 11 and the guide sleeve are respectively arranged on the vehicle body and the upper tool holder 4.

[0063] Specifically, the guide mechanism composed of the guide rod 11 and the guide sleeve ensures the upper tool holder 4 to be lifted and lowered stably, while sharing the impact force of the upper tool holder 4 falling due to gravity (the V-shaped rolling row or one side contacts the upper shear blade first), avoiding the bending of the vertical screw.

[0064] Furthermore, four groups of guide rods 11 and guide sleeves are distributed on the periphery of the lifting mechanism 7 in a rectangular shape.

[0065] In this embodiment, the load capacity of the lifting mechanism 7 is greater than 1.5 times the weight of the upper shear blade.

[0066] Specifically, the existing upper tool holder 4 requires a load of 1 t, a single vertical thread of the lifting mechanism 7 bears 1.5 t, and the overall load is not less than 3 t. The parameters are set in advance to accommodate the reserved gravity drop impact amount to ensure the safety of the device.

[0067] Furthermore, the vehicle body and the elastic buffer mechanism 3 are arranged similarly.

[0068] When the special device for replacing the shear blade of a cold shearing machine of the present embodiment is used, taking the replacement of the upper shear blade as an example, a new upper shear blade is first placed on an upper tool holder 4, the vehicle body is moved to the cold shearing machine, the other upper tool holder 4 is raised and lowered to make the upper tool holder 4 rest against the broken upper shear blade of the cold shearing machine, the old upper shear blade is removed, and the old upper shear blade falls on the upper tool holder 4, then the upper tool holder 4 is lowered and the vehicle body is moved, and the new upper shear blade is raised and lowered on the upper tool holder 4 to install the new upper shear blade.

[0069] After the replacement is completed, the vehicle body is moved to the hoisting position or the repair platform, and the old upper shear blade is adjusted to the position by moving the extension portion 8 to facilitate hoisting and transportation.

[0070] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A special device for changing cutting blades of cold shearing machine, characterized in that: include: Vehicle body; Two upper tool racks, the two upper tool racks are respectively arranged on the vehicle body through a lifting mechanism; Two lower tool racks are respectively arranged on both sides of the two upper tool racks.

2. The special device for changing the cutting edge of a cold shearing machine according to claim 1, characterized in that: The upper tool holder comprises: An upper knife groove, wherein the upper knife groove is a through groove structure, and a first limiting mechanism is respectively provided at both ends; Two rolling rows, a plurality of rollers are arranged at intervals on the rolling rows, the two rolling rows are symmetrically arranged at the notches of the upper knife grooves, and the rollers of the two rolling rows form a V-shaped structure.

3. The special device for changing the cutting edge of a cold shearing machine according to claim 2, characterized in that: The first limiting mechanism comprises a plug, one end of which passes through the side wall of the upper knife groove and is inserted into the upper knife groove, so as to limit the upper cutting edge in the V-shaped structure.

4. The special device for changing the cutting edge of a cold shearing machine according to claim 3, characterized in that: The upper knife groove is also provided with an extension portion, and the roller is also provided on the extension portion.

5. The special device for changing the cutting edge of a cold shearing machine according to claim 1, characterized in that: The lower tool holder comprises: A lower knife groove is provided with a plurality of rollers at intervals in the lower knife groove, and a second limiting mechanism is provided at both ends.

6. The special device for changing the cutting edge of a cold shearing machine according to claim 1, characterized in that: The vehicle body comprises a pedestal and a base, the base is provided with walking wheels, the pedestal is arranged at the upper end of the base through an elastic buffer mechanism, and the upper tool holder and the lower tool holder are arranged on the pedestal.

7. The special device for changing the cutting edge of a cold shearing machine according to claim 6, characterized in that: A positioning bolt is arranged on the base.

8. The special device for changing the cutting edge of a cold shearing machine according to claim 1, characterized in that: The lifting mechanism comprises: Two shells, the two shells are arranged at intervals; Two vertical screws, each of which is arranged on each of the housings; A horizontal screw, one end of which is provided with a driving wheel, and the other end of which passes through the two shells in sequence and is connected with the two vertical screws.

9. The special device for changing the cutting edge of a cold shearing machine according to claim 8, characterized in that: It also includes a guide rod and a guide sleeve, and the guide rod and the guide sleeve are respectively arranged on the vehicle body and the upper tool holder.

10. The special device for changing cutting blades of cold shearing machine according to claim 1, characterized in that: The load capacity of the lifting mechanism is greater than 1.5 times the weight of the upper shear blade.

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