Furnace roller on-line replacing device for non-oxidation roller hearth furnace

Abstract

The furnace roller on-line replacing device comprises a portal frame and a track, the track is installed on one side of the non-oxidation roller hearth furnace, the portal frame slides left and right on the track, and the top end of the inner side of the portal frame is movably connected with a lifting trolley. According to the furnace roller replacing tool, the end of the furnace roller body is fixed to the furnace roller replacing tool, the furnace roller body and the bracket are coaxially distributed through the clamping assembly and the cushion block on the top of the bracket, the furnace roller replacing tool is kept balanced when lifted through the counter weight frame and the counter weight plate, and the furnace roller replacing tool is matched with the gradienter for detection till the furnace roller body is lifted in the horizontal state. When the damaged furnace roller body is fixed, the portal frame is moved, the damaged furnace roller body can be pulled out, when a new furnace roller body is updated, stable butt joint and installation can be achieved, in the process, manual dragging of the furnace roller body is not needed, shutdown cooling is not needed, online replacement can be conducted, the furnace shutdown time is shortened, the yield of a heating furnace is improved, operation is easy and convenient, labor intensity is reduced, and production efficiency is improved. And the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel plate heat treatment furnace equipment, in particular to an online furnace roller replacement device for a non-oxidation roller hearth furnace. Background Art

[0002] The heat treatment workshop for processing steel plates uses an oxidation-free roller-bottom furnace. The furnace structure contains a large number of furnace rollers. These furnace rollers will inevitably fail after being used for a period of time. At this time, the faulty furnace rollers need to be replaced.

[0003] At present, the replacement of furnace rollers requires entering the non-oxidation roller hearth furnace after the furnace is shut down and cooled. However, it usually takes 3-4 days for the furnace to cool down sufficiently, which is a long time and seriously affects the processing efficiency and causes great losses. In addition, the working space in the non-oxidation roller hearth furnace is small, and people entering the furnace to operate not only has low work efficiency, but also poses safety hazards.

[0004] Therefore, the utility model develops an online replacement device for furnace rollers of a non-oxidation roller hearth furnace to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an online replacement device for furnace rollers for an oxidation-free roller hearth furnace in view of the deficiencies of the above-mentioned prior art. The device fixes the end of the furnace roller body on the furnace roller replacement tooling, utilizes the clamping assembly and the pad on the top of the bracket to make the furnace roller body and the bracket coaxially distributed, utilizes the counterweight frame and the counterweight plate to keep the furnace roller replacement tooling balanced when it is hoisted, cooperates with the level meter for detection until the furnace roller body is hoisted in a horizontal state, fixes the damaged furnace roller body, moves the gantry, and can pull it out. When updating the new furnace roller body, it can be stably docked and installed, thereby achieving the purpose of online rapid replacement of the furnace hearth roller, reducing the furnace downtime and increasing the output of the heating furnace.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An online replacement device for furnace rollers of a non-oxidation roller hearth furnace comprises a gantry and a track, the track is installed on one side of the non-oxidation roller hearth furnace, the gantry slides left and right on the track, a lifting vehicle is movably connected to the top inner side of the gantry, and a plurality of traction ropes are wound on the lifting vehicle, and the plurality of traction ropes are connected to a furnace roller replacement tooling together;

[0008] The furnace roller replacement tooling includes a crossbeam frame and a counterweight frame. The counterweight frame is welded to one end of the crossbeam frame, and a bracket is detachably installed on the other end of the crossbeam frame. Both sides of the counterweight frame are provided with mounting grooves for plugging in counterweight plates. A cushion block is installed on the outer side of the top of the bracket, and a clamping assembly is also installed on the top of the bracket, and the clamping assembly is used to fix one end of the furnace roller body;

[0009] Fix one end of the furnace roller body in the clamping assembly, and fit the cushion block with the bottom of the furnace roller body so that the furnace roller body and the bracket are coaxially distributed. Use the counterweight frame and counterweight plate to keep the furnace roller replacement tooling balanced when it is hoisted. At this time, the furnace roller body can be stably moved in a horizontal state.

[0010] Preferably, a linear drive mechanism is provided on the gantry, and the lifting vehicle slides back and forth on the gantry through the linear drive mechanism.

[0011] Preferably, the linear drive mechanism includes a moving screw and a first drive motor, the moving screw is rotationally connected to the gantry, and the lifting vehicle is threadedly sleeved with the moving screw, the first drive motor is fixed on one side of the gantry, and the drive motor output shaft is transmission-connected to the moving screw.

[0012] Preferably, a plurality of winding rollers are provided at the bottom of the lifting vehicle, a plurality of traction ropes are installed on the winding rollers in a one-to-one correspondence, a second drive motor is provided on the lifting vehicle, and the second drive motor drives the plurality of winding rollers synchronously.

[0013] Preferably, a plurality of evenly distributed anti-skid hanging grooves are provided on the top of the crossbeam frame for installation and connection of the traction rope.

[0014] Preferably, reinforcing ribs are welded on both sides of the crossbeam frame.

[0015] Preferably, a vertical plate is welded to one end of the crossbeam frame adjacent to the bracket, and the two vertical plates are connected by screws.

[0016] Preferably, a threaded hole is provided on the outer wall of the installation groove, and a bolt rod is threadedly connected to the inner threaded hole for tightening the counterweight plate.

[0017] Preferably, the clamping assembly comprises an upper clamping block and a lower clamping block, and the upper clamping block and the lower clamping block are respectively attached to the top outer curved surface and the bottom outer curved surface of the furnace roller body;

[0018] Extension ear plates are provided on both sides of the upper clamp block and the lower clamp block. A fixed screw rod is fixedly connected to the top of the extension ear plate of the lower clamp block. A spring member is sleeved on the outside of the fixed screw rod. A through hole is opened on the surface of the extension ear plate of the upper clamp block. The fixed screw rod passes through the through hole, and a clamping nut is threadedly connected to the outside of the fixed screw rod. A buffer washer is provided between the clamping nut and the extension ear plate of the upper clamp block.

[0019] Preferably, a positioning slot is provided on the bracket, and the outer ear plate of the lower clamping block matches the positioning slot. Baffles are provided on both sides of the bracket and at positions corresponding to the positioning slots. A first plugging hole is provided on the surface of the baffle, and a second plugging hole is provided on the outer side of the outer ear plate of the lower clamping block. The first pin is commonly inserted into the adjacent first and second plugging holes. Third plugging holes are provided on both sides of the end of the bracket, and fourth plugging holes are provided on both sides of the top of the cushion block. The second pin is commonly inserted into the adjacent third and fourth plugging holes.

[0020] The utility model has the following beneficial effects:

[0021] By fixing the end of the furnace roller body on the furnace roller replacement tooling, using the clamping assembly and pads on the top of the bracket to make the furnace roller body and the bracket coaxially distributed, using the counterweight frame and counterweight plate to keep the furnace roller replacement tooling balanced when it is hoisted, and cooperating with the level meter to detect until the furnace roller body is hoisted in a horizontal state, fix the damaged furnace roller body, move the gantry, and pull it out. When replacing the new furnace roller body, it can be stably docked and installed. In this process, since there is no need to manually drag the furnace roller body, there is no need to stop the machine for cooling, and it can be replaced online, reducing the downtime time and increasing the output of the heating furnace. The operation is simple and convenient, reducing labor intensity and improving safety.

[0022] The movable gantry and movable lifting vehicle make the furnace roller replacement tooling more flexible to meet the needs of furnace roller body replacement in different positions. The clamping components and pads are replaceable structures, which can be adjusted and selected according to the specifications of the furnace roller body. Combined with the gravity balance adjustment of the counterweight plate, the applicability of the device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A diagram showing the use status of the online replacement device for furnace rollers of the non-oxidizing roller hearth furnace provided by the utility model;

[0024] Figure 2 This is a schematic diagram of the hoisting structure of the furnace roller replacement tooling and the traction rope of the utility model;

[0025] Figure 3 This is a first-perspective stereoscopic view of the furnace roller replacement tooling of the utility model;

[0026] Figure 4 A second perspective stereoscopic image of the furnace roller replacement tooling of the utility model;

[0027] Figure 5 This is the front view of the furnace roller replacement tooling of the utility model;

[0028] Figure 6 A top view of the furnace roller replacement tooling of the utility model;

[0029] Figure 7 The exploded view of the bracket, the pad and the clamping assembly of the utility model is shown.

[0030] Among them are:

[0031] Gantry-1; Track-2; Non-oxidizing roller hearth furnace-3; Lifting car-4; Traction rope-5; Furnace roller replacement tool-6;

[0032] Furnace roller body-31;

[0033] Beam frame-61; counterweight frame-62; bracket-63; mounting slot-64; counterweight plate-65; pad-66; clamping assembly-67; bolt rod-68;

[0034] Anti-skid hanging groove-611; reinforcing rib-612; vertical plate-613;

[0035] Positioning notch-631; baffle-632; first pin-633; second pin-634;

[0036] Upper clamping block-671; lower clamping block-672; fixed screw rod-673; spring member-674; clamping nut-675; buffer washer-676. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0038] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0039] like Figure 1-7 As shown, an online replacement device for furnace rollers of a non-oxidation roller hearth furnace comprises a gantry 1 and a track 2, the track 2 is installed on one side of the non-oxidation roller hearth furnace 3, the gantry 1 slides left and right on the track 2, a lifting vehicle 4 is movably connected to the top inner side of the gantry 1, and a plurality of traction ropes 5 are wound around the lifting vehicle 4, and the plurality of traction ropes 5 are connected to a furnace roller replacement tool 6 together;

[0040] The furnace roller replacement tool 6 includes a crossbeam frame 61 and a counterweight frame 62. The counterweight frame 62 is welded to one end of the crossbeam frame 61. A bracket 63 is detachably mounted on the other end of the crossbeam frame 61. Both sides of the counterweight frame 62 are provided with mounting grooves 64 for inserting a counterweight plate 65. A cushion block 66 is mounted on the outer side of the top of the bracket 63. A clamping assembly 67 is also mounted on the top of the bracket 63. The clamping assembly 67 is used to fix one end of the furnace roller body 31.

[0041] One end of the furnace roller body 31 is fixed in the clamping assembly 67, and the cushion block 66 is fitted with the bottom of the furnace roller body 31, so that the furnace roller body 31 and the bracket 63 are coaxially distributed, and the counterweight frame 62 and the counterweight plate 65 are used to keep the furnace roller replacement tool 6 balanced when it is lifted. At this time, the furnace roller body 31 can be stably moved in a horizontal state.

[0042] In order to replace the furnace roller body 31 at different positions on the oxidation-free roller hearth furnace 3, a linear drive mechanism is provided on the gantry 1, and the lifting vehicle 4 slides back and forth on the gantry 1 through the linear drive mechanism, so that the lifting vehicle 4 can correspond to the position where the furnace roller body 31 needs to be installed.

[0043] The present application provides a preferred embodiment of a linear drive mechanism, which includes a movable screw and a first drive motor. The movable screw is rotatably connected to the gantry 1, and the lifting vehicle 4 is threadedly sleeved with the movable screw. The first drive motor is fixed on one side of the gantry 1, and the output shaft of the drive motor is transmission-connected to the movable screw. The first drive motor is a servo motor. The unit number of revolutions of the servo motor is set according to the spacing between two adjacent furnace roller bodies 31 to achieve precise positioning. The drive structure provided in this embodiment is a screw and sleeve matching method, which can realize the front and rear driving of the lifting vehicle 4 on the gantry 1.

[0044] The present application provides a preferred embodiment of a traction rope 5 to pull and lift the furnace roller replacement tooling 6, wherein a plurality of winding rollers are provided at the bottom of the lifting vehicle 4, and a plurality of traction ropes 5 are installed on the winding rollers one by one, and a second drive motor is provided on the lifting vehicle 4, and the second drive motor synchronously drives the plurality of winding rollers, wherein the second drive motor is a stepping motor, and the driving structure provided in this embodiment can realize that the traction rope 5 can be wound and released on the winding roller, and a fixer of the traction rope 5 can be further provided, and when the traction rope 5 pulls and lifts the furnace roller replacement tooling 6, the traction rope 5 is locked to prevent the furnace roller replacement tooling 6 from falling off.

[0045] Specifically, a plurality of evenly distributed anti-skid hanging grooves 611 are provided on the top of the crossbeam frame 61 for installation and connection of the traction rope 5 , which can prevent the traction rope 5 from shaking in the anti-skid hanging grooves 611 .

[0046] Specifically, reinforcing ribs 612 are welded on both sides of the crossbeam frame 61 to improve the strength of the crossbeam frame 61, increase the carrying capacity of the lifting furnace roller replacement tooling 6, and greatly improve the safety of the device.

[0047] Specifically, a vertical plate 613 is welded to one end of the crossbeam frame 61 adjacent to the bracket 63, and the two vertical plates 613 are connected by screws to facilitate docking installation and disassembly and maintenance. In addition, before the furnace roller body 31 is hoisted, it is placed and fixed on the bracket 63, which can achieve the effect of tight positioning of its end.

[0048] Specifically, a threaded hole is formed on the outer wall of the mounting groove 64, and a bolt rod 68 is threadedly connected to the threaded hole. The bolt rod 68 is rotated to tighten the end thereof against the counterweight plate 65, thereby improving the safety and stability during the lifting operation.

[0049] Specifically, the clamping assembly 67 includes an upper clamping block 671 and a lower clamping block 672, and the upper clamping block 671 and the lower clamping block 672 are respectively attached to the top outer curved surface and the bottom outer curved surface of the furnace roller body 31;

[0050] Both sides of the upper clamp block 671 and the lower clamp block 672 are provided with extension ear plates, the top of the extension ear plate of the lower clamp block 672 is fixedly connected with a fixed screw rod 673, the outer side of the fixed screw rod 673 is sleeved with a spring member 674, a through hole is opened on the surface of the extension ear plate of the upper clamp block 671, the fixed screw rod 673 passes through the through hole, and the outer side of the fixed screw rod 673 is threadedly connected with a clamping nut 675, and a buffer washer 676 is provided between the clamping nut 675 and the extension ear plate of the upper clamp block 671;

[0051] When the upper clamp block 671 and the lower clamp block 672 squeeze each other to fix the furnace roller body 31, the fixed screw rod 673 passes through the through hole and is locked under the action of the clamping nut 675, and the spring member 674 and the buffer washer 676 cooperate to provide protection and reduce the collision loss between the devices.

[0052] In order to be suitable for use with furnace roller bodies 31 of different specifications, the clamping assembly 67 and the cushion block 66 are designed as a detachable structure, so that the clamping assembly 67 and the cushion block 66 of different inner diameters can be replaced as needed. A positioning notch 631 is provided on the bracket 63, and the outer ear plate of the lower clamping block 672 matches the positioning notch 631. Baffles 632 are provided on both sides of the bracket 63 and at positions corresponding to the positioning notch 631. A first plug-in hole is provided on the surface of the baffle 632, and a second plug-in hole is provided on the outer side of the outer ear plate of the lower clamping block 672. Hole, the adjacent first plug-in hole and the second plug-in hole are jointly plugged with the first pin 633, the third plug-in holes are opened on both sides of the end of the bracket 63, the fourth plug-in holes are opened on both sides of the top of the cushion block 66, the adjacent third plug-in hole and the fourth plug-in hole are jointly plugged with the second pin 634, the positioning slot 631 cooperates with the extended ear plate of the lower clamping block 672 to realize the rapid positioning of the clamping assembly 67, and the first pin 633 and the second pin 634 are used to facilitate the installation of the clamping assembly 67 and the cushion block 66.

[0053] When the device is used, the furnace roller body 31 to be replaced on the non-oxidizing roller hearth furnace 3 is removed, the active side coupling and the end covers on both sides of the furnace roller body 31 as well as the channel blocks and thermal insulation mineral wool on the shafts on both sides are removed, the end of the furnace roller body 31 is placed on the bracket 63 and fixed with the clamping assembly 67, then the gantry 1 is moved outward, the damaged furnace roller body 31 is pulled out, and it is hoisted to one side and put down, and when replacing the new furnace roller body 31, one end of the new furnace roller body 31 is fixed in the clamping assembly 67 so that the furnace roller body 31 and the furnace roller body 31 are fixed together. The bracket 63 is coaxially distributed, and the counterweight frame 62 and the counterweight plate 65 are used to keep the furnace roller replacement tool 6 balanced when it is hoisted, and the level meter is used for detection until the furnace roller body 31 is hoisted in a horizontal state. At this time, the furnace roller body 31 can be moved stably, and the free end of the furnace roller body 31 is aligned with the replacement port of the oxidation-free roller hearth furnace 3, and then the gantry 1 is moved inward, and external force is used until the furnace roller body 31 is pushed into the replacement port, and finally the coupling, the end covers on both sides, and the channel blocks and thermal insulation mineral wool on the shafts on both sides are installed.

[0054] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An online replacement device for furnace rollers for an oxidation-free roller hearth furnace, comprising a gantry (1) and a track (2), wherein the track (2) is installed on one side of the oxidation-free roller hearth furnace (3), and the gantry (1) slides left and right on the track (2), characterized in that: The top inner side of the gantry (1) is movably connected to a lifting vehicle (4), and a plurality of traction ropes (5) are wound around the lifting vehicle (4), and the plurality of traction ropes (5) are connected together to a furnace roller replacement tool (6); The furnace roller replacement tool (6) comprises a crossbeam frame (61) and a counterweight frame (62), wherein the counterweight frame (62) is welded to one end of the crossbeam frame (61), and a bracket (63) is detachably mounted on the other end of the crossbeam frame (61), and mounting grooves (64) are provided on both sides of the counterweight frame (62) for inserting a counterweight plate (65), and a cushion block (66) is mounted on the outer side of the top of the bracket (63), and a clamping assembly (67) is also mounted on the top of the bracket (63), and the clamping assembly (67) is used to fix one end of the furnace roller body (31); One end of the furnace roller body (31) is fixed in the clamping assembly (67), and the cushion block (66) is fitted with the bottom of the furnace roller body (31), so that the furnace roller body (31) and the bracket (63) are coaxially distributed, and the counterweight frame (62) and the counterweight plate (65) are used to keep the furnace roller replacement tool (6) balanced when it is lifted. At this time, the furnace roller body (31) can be stably moved in a horizontal state.

2. The device for online replacement of furnace rollers for an oxidation-free roller hearth furnace according to claim 1, characterized in that: The gantry (1) is provided with a linear drive mechanism, and the lifting vehicle (4) slides back and forth on the gantry (1) via the linear drive mechanism.

3. The device for online replacement of furnace rollers for an oxidation-free roller hearth furnace according to claim 2, characterized in that: The linear drive mechanism comprises a movable screw and a first drive motor, the movable screw is rotationally connected to the gantry (1), and the lifting vehicle (4) is threadedly sleeved on the movable screw, the first drive motor is fixed to one side of the gantry (1), and the output shaft of the drive motor is transmission-connected to the movable screw.

4. The device for online replacement of furnace rollers for an oxidation-free roller hearth furnace according to claim 1, characterized in that: The bottom of the lifting vehicle (4) is provided with a plurality of winding rollers, and a plurality of traction ropes (5) are mounted on the winding rollers in a one-to-one correspondence. The lifting vehicle (4) is provided with a second drive motor, and the second drive motor drives the plurality of winding rollers synchronously.

5. The device for online replacement of furnace rollers for a non-oxidation roller hearth furnace according to claim 1, characterized in that: The top of the crossbeam frame (61) is provided with a plurality of evenly distributed anti-skid hanging grooves (611) for installing and connecting the traction rope (5).

6. The device for online replacement of furnace rollers for a non-oxidation roller hearth furnace according to claim 1, characterized in that: Reinforcement ribs (612) are welded to both sides of the crossbeam frame (61).

7. The device for online replacement of furnace rollers for a non-oxidation roller hearth furnace according to claim 1, characterized in that: A vertical plate (613) is welded to one end of the crossbeam frame (61) adjacent to the bracket (63), and the two vertical plates (613) are connected by screws.

8. The device for online replacement of furnace rollers for a non-oxidation roller hearth furnace according to claim 1, characterized in that: The outer wall of the mounting groove (64) is provided with a threaded hole, and a bolt rod (68) is threadedly connected to the inner thread of the threaded hole for tightening the counterweight plate (65).

9. The device for online replacement of furnace rollers for a non-oxidation roller hearth furnace according to claim 1, characterized in that: The clamping assembly (67) comprises an upper clamping block (671) and a lower clamping block (672), wherein the upper clamping block (671) and the lower clamping block (672) are respectively fitted to the top outer curved surface and the bottom outer curved surface of the furnace roller body (31); Both sides of the upper clamping block (671) and the lower clamping block (672) are provided with external ear plates, the top of the external ear plate of the lower clamping block (672) is fixedly connected with a fixed screw rod (673), the outer side of the fixed screw rod (673) is sleeved with a spring member (674), a through hole is opened on the surface of the external ear plate of the upper clamping block (671), the fixed screw rod (673) passes through the through hole, and a clamping nut (675) is threadedly connected to the outer side of the fixed screw rod (673), and a buffer washer (676) is provided between the clamping nut (675) and the external ear plate of the upper clamping block (671).

10. The on-line replacement device for furnace rollers of a non-oxidation roller hearth furnace according to claim 9, characterized in that: The bracket (63) is provided with a positioning notch (631), the outer extension ear plate of the lower clamping block (672) matches the positioning notch (631), baffles (632) are provided on both sides of the bracket (63) and at positions corresponding to the positioning notch (631), a first plugging hole is provided on the surface of the baffle (632), a second plugging hole is provided on the outer side of the outer extension ear plate of the lower clamping block (672), a first pin (633) is commonly inserted into the adjacent first plugging hole and the second plugging hole, a third plugging hole is provided on both sides of the end of the bracket (63), a fourth plugging hole is provided on both sides of the top of the cushion block (66), a second pin (634) is commonly inserted into the adjacent third plugging hole and the fourth plugging hole.

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