Furnace barrel turnover mechanism

Abstract

The invention relates to the technical field of reduction furnaces, in particular to a furnace barrel turnover mechanism which comprises a rack and a cantilever arranged at the top of the rack. The turnover mechanism comprises a swing seat, and the swing seat is arranged on the cantilever and rotates with the horizontal direction as the rotating axis; and the swing mechanism is arranged on the swing seat and used for fixing the furnace barrel, and the swing mechanism turns over along with the swing seat and drives the furnace barrel to rotate. By arranging the rack, the turnover mechanism and the slewing mechanism, inclined pulling operation and potential safety hazards caused by inclined pulling operation when a crane is used for turnover are avoided, the slewing function of the furnace barrel is provided, the angle of the furnace barrel can be conveniently adjusted in the maintenance process, the maintenance efficiency is improved, a traditional crane turnover mode is replaced, dependence on manual operation is reduced, and the maintenance cost is reduced. And the automation degree and the safety of overturning are improved.

Description

Technical Field

[0001] The invention relates to the technical field of reduction furnaces, and in particular to a furnace drum turning mechanism. Background Art

[0002] The height of the restored furnace drum is about 5.5 meters and its weight is approximately 10 tons. It needs to be flipped from a vertical state to a horizontal state before maintenance. The existing furnace drum flipping scheme uses two cranes to flip it to a horizontal state. During the flipping process, the crane will inevitably be pulled diagonally, which violates the principle of "no diagonal pulling of heavy objects" in the "Ten No-Lifting" of crane use. There is a major safety hazard. During the maintenance process of the furnace drum after it is flipped to a horizontal state, the position of the furnace drum needs to be adjusted, which is also very difficult.

[0003] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] The present invention provides a furnace drum turning mechanism, thereby effectively solving the problems in the background technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: a furnace drum turning mechanism, comprising: A frame and a cantilever arranged on the top of the frame; A flipping mechanism, the flipping mechanism comprising a swing seat, the swing seat being rotatably disposed on the cantilever and flipping with a horizontal axis as a rotation axis; The rotary mechanism is arranged on the swing seat to fix the furnace drum. The rotary mechanism turns over with the swing seat and drives the furnace drum to rotate.

[0006] Furthermore, one end of the swing seat in the length direction is rotatably connected to the cantilever, and the other end is provided with a hydraulic drive mechanism, and the hydraulic drive mechanism drives the swing seat to flip and rotate.

[0007] Furthermore, the hydraulic drive mechanism includes two hydraulic rods, one end of the two hydraulic rods is rotatably set on the frame, and the other end is rotatably set on the swing seat. The two hydraulic rods are respectively set on both sides of the furnace drum and are symmetrically arranged about the furnace drum.

[0008] Furthermore, when the swing seat is horizontal, two supporting wheels are arranged at the bottom end in the horizontal direction, and the two supporting wheels are parallel to the furnace drum and support the top of the furnace drum.

[0009] Furthermore, the rotary mechanism comprises: A rotating disk, which is arranged on the swing seat and rotates with the axis of the furnace drum as the rotation axis, and the rotating disk fixes the flange side of the furnace drum; A driving motor, wherein the driving motor is fixedly arranged on the swing seat; The transmission mechanism is arranged between the driving motor and the rotating disk, transmits the power of the driving motor, and drives the rotating disk to rotate.

[0010] Furthermore, the transmission mechanism includes a reducer and a gear component, the reducer is in transmission connection with the drive motor, the gear component is at least partially fixedly disposed on the rotary disk, and the gear component is in transmission connection with the reducer.

[0011] Furthermore, a traveling mechanism is provided at the bottom of the frame, and the traveling mechanism can be arranged on a track and travel along the track.

[0012] Furthermore, the walking mechanism includes two groups, and each group of the walking mechanism includes an AC motor, a cycloid pinwheel reducer, a gear pair and a walking wheel.

[0013] Furthermore, the frame is larger than a set length and a counterweight at both ends of the cantilever, respectively.

[0014] The beneficial effects of the present invention are as follows: by setting a frame, a turning mechanism and a slewing mechanism, the oblique pulling operation and the safety hazards caused by the use of a crane for turning are avoided, and the slewing function of the furnace drum is provided, which is convenient for adjusting the angle of the furnace drum during maintenance, improving maintenance efficiency, replacing the traditional crane turning method, reducing dependence on manual operation, and improving the automation and safety of turning. The slewing mechanism can drive the furnace drum to rotate in a horizontal state, and maintenance personnel can adjust the angle of the furnace drum, which is convenient for welding, cleaning, testing and other operations. It can be operated with one button, greatly reducing manual intervention and improving work efficiency. It not only improves the safety and stability of the turning process, but also improves the convenience and automation of maintenance work. It can effectively replace the traditional crane turning method, greatly reduce safety risks and the difficulty of manual operation, and is an efficient, safe and intelligent furnace drum turning solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the flipping mechanism; Figure 2 for Figure 1 Structural schematic diagram of the middle furnace tube in vertical state; Figure 3 It is a side view of the swing seat; Figure 4 It is a structural schematic diagram of the rotary mechanism; Figure 5 It is a structural diagram of the walking mechanism. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Embodiment 1: like Figures 1 to 5 Shown: A furnace drum turning mechanism, comprising: A frame 1 and a cantilever 11 arranged on the top of the frame 1; The turning mechanism 2 includes a swing seat 21, which is rotatably disposed on the cantilever 11 and turns with the horizontal axis as the rotation axis; The rotary mechanism 3 is arranged on the swing seat 21 to fix the furnace drum. The rotary mechanism 3 turns over along with the swing seat 21 and drives the furnace drum to rotate.

[0019] By setting the frame 1, the turning mechanism 2 and the slewing mechanism 3, the possible oblique pulling and safety hazards that may occur when using the crane to turn the furnace can be avoided, and the furnace drum can be turned around to facilitate the adjustment of the furnace drum angle during maintenance, improve maintenance efficiency, replace the traditional crane turning method, reduce dependence on manual operation, and improve the automation and safety of turning. The slewing mechanism 3 can drive the furnace drum to rotate in a horizontal state, and maintenance personnel can adjust the angle of the furnace drum to facilitate welding, cleaning, testing and other operations. It can be operated with one button, greatly reducing manual intervention and improving work efficiency. It not only improves the safety and stability of the turning process, but also improves the convenience and automation of maintenance work. It can effectively replace the traditional crane turning method, greatly reduce safety risks and the difficulty of manual operation. It is an efficient, safe and intelligent furnace drum turning solution.

[0020] In this embodiment, one end of the swing seat 21 in the length direction is rotatably connected to the cantilever 11, and the other end is provided with a hydraulic drive mechanism 22, which drives the swing seat 21 to flip and rotate.

[0021] The hydraulic drive mechanism 22 controls the rotation of the swing seat 21, so that the furnace drum can be turned to a horizontal state smoothly and in a controlled manner to avoid shaking or impact. The hydraulic system has a large torque output and can easily drive the furnace drum to turn over, which is suitable for furnace drums of different specifications and weights. The hydraulic system can start and stop slowly, reduce the inertial impact during turning, and improve the durability and safety of the equipment.

[0022] Driven by a hydraulic cylinder, it can achieve stepless speed regulation to ensure a smooth flipping process and avoid jamming or shaking. It has a buffering characteristic, which reduces the flipping speed when it is close to horizontal or vertical state to prevent excessive impact from damaging the equipment. Enhance safety and avoid accidental falls; the hydraulic system can be equipped with a hydraulic locking device, which can self-lock at any angle when the equipment stops running to prevent the furnace from sliding due to gravity or accidental pressure relief. Combined with a limit switch and an angle sensor, it can ensure that the furnace stops automatically after flipping to the set angle to avoid safety risks caused by overtravel operation.

[0023] The hydraulic drive mechanism 22 includes two hydraulic rods 221, one end of the two hydraulic rods 221 is rotatably set on the frame 1, and the other end is rotatably set on the swing seat 21. The two hydraulic rods 221 are respectively set on both sides of the furnace drum and are symmetrically set about the furnace drum.

[0024] By arranging two hydraulic rods 221 symmetrically on both sides of the furnace drum, uniform force is ensured to avoid unstable or swinging furnace drum turning due to excessive force on one side. It is suitable for furnace drums of different specifications and weights to ensure a smooth and reliable turning process. The double hydraulic rods 221 are used to share the load, which can withstand a larger furnace drum weight and meet the turning requirements of large-sized furnace drums. Compared with a single hydraulic rod 221, the double hydraulic rod 221 can reduce single-point force and improve the durability of the hydraulic rod 221 and the frame 1. Since the two hydraulic rods 221 work synchronously, it can ensure that the swing seat 21 turns at a stable angular velocity, avoiding the furnace drum from shaking left and right during the turning process. Combined with a proportional valve or a synchronous valve, it can ensure that the telescopic speed of the two hydraulic rods 221 is consistent, making the turning of the furnace drum more stable and accurate.

[0025] The hydraulic cylinder is installed between the frame 1 and the cantilever 11. The hydraulic pump station is driven by an AC motor to make the hydraulic cylinder telescopic, so that the swing seat 21 can switch back and forth in the horizontal and vertical directions. The hydraulic system is equipped with a self-locking valve and a synchronization valve to ensure the synchronization of the movement between the two cylinders. If the motor is damaged and suddenly loses power, it also has a pressure-maintaining self-locking effect, and the safety performance is greatly enhanced.

[0026] The pressure of the hydraulic system is a variable value and can be adjusted according to actual needs. The hydraulic pump station and hydraulic cylinder are all produced by professional manufacturers. The hydraulic pump station is equipped with a hydraulic protection device to prevent safety accidents caused by leakage. The hydraulic cylinder is equipped with an anti-oil pipe burst device, which can effectively lock the oil pipe when it bursts accidentally to avoid accidents.

[0027] The electronic control system is mainly composed of contactors, frequency converters, etc. The speed regulation system has the characteristics of wide range, constant torque speed regulation, smooth speed regulation, no torque pulsation, etc. Its control signal adopts analog control, with high overall stability and strong anti-interference ability.

[0028] The control box is installed together with the main machine, and the hand control box is connected to the control box by a cable. The hand control box is equipped with a power indicator light, a forward and reverse flip switch button, a forward and reverse speed control button for the workbench, an emergency stop button, etc.

[0029] As a preferred embodiment of the above embodiment, when the swing seat 21 is horizontal, two supporting wheels 23 are provided at the bottom end in the horizontal direction. The two supporting wheels 23 are parallel to the furnace drum and support the top of the furnace drum.

[0030] The supporting wheel 23 is parallel to the bottom of the furnace drum. When the swing seat 21 rotates to a horizontal position, the supporting wheel 23 bears the weight of the furnace drum, reduces the load of the rotary mechanism 3, and improves durability. It prevents the furnace drum from sagging or bending due to gravity in a horizontal state, ensuring stable operation of the equipment. The supporting wheel 23 can absorb vibration, reduce the swing of the furnace drum in a horizontal state, and improve the operating comfort and safety of maintenance personnel. It stably supports the furnace drum, facilitates maintenance operations such as welding, cleaning, and testing, and improves work efficiency.

[0031] The supporting wheel 23 can be made of polyurethane material, which is wear-resistant and not easy to scratch the workpiece. The base is reasonably laid out under the premise of meeting the strength and rigidity requirements, and all welds are operated as equal-strength welds, and are annealed and heat treated after welding. The designed overall structure can effectively prevent the danger of the whole machine overturning when working with load.

[0032] As a preferred embodiment of the above, the rotary mechanism 3 includes: A rotating disk 31, which is disposed on the swing seat 21 and rotates with the axis of the furnace drum as the rotation axis. The rotating disk 31 fixes the flange side of the furnace drum; A driving motor 32, the driving motor 32 is fixedly disposed on the swing seat 21; The transmission mechanism 33 is disposed between the driving motor 32 and the rotating disk 31 , transmits the power of the driving motor 32 , and drives the rotating disk 31 to rotate.

[0033] The rotary disc 31 fixes the furnace drum flange to ensure that the furnace drum will not deviate during the rotation process, thereby improving the rotation accuracy.

[0034] The slewing mechanism 3 drives the furnace barrel to rotate, facilitating maintenance personnel to adjust the working angle and improving the operation comfort and efficiency.

[0035] The drive motor 32 provides stable power and can be steplessly speed-regulated, making the rotation of the furnace barrel smoother and more controllable to meet the requirements of different working conditions.

[0036] The transmission mechanism 33 efficiently transmits power, ensuring that the furnace barrel does not slip during rotation and improving the operation reliability.

[0037] Among them, the transmission mechanism 33 includes a speed reducer and a gear component. The speed reducer is drivingly connected to the drive motor 32, and the gear component is at least partially fixedly arranged on the slewing disc 31 and is drivingly connected to the speed reducer.

[0038] The speed reducer reduces the output speed of the motor and increases the torque, enabling the slewing disc 31 to rotate smoothly at a constant speed and avoiding impacts or vibrations caused by excessive speed. The gear transmission has high precision and can accurately control the rotation angle of the furnace barrel to meet the requirements of different working conditions, such as angle adjustment during welding, cleaning, or inspection.

[0039] The transmission mechanism 33 can adopt a helical gear worm and worm reducer, a pair of helical gears, and a pair of variable gears for meshing transmission. The output torque of the output shaft can meet the requirements that the eccentricity of the workpiece is within the standard value range under the condition that the workbench is loaded, and the speed of the workbench can be frequency-converted and adjusted between the standard values. The braking motor has strong self-locking property and can accurately position and lock the workpiece at any position during rotation, select a suitable welding orientation, and perform the welding forming of manual welds. The slewing bearing adopts a "single-row spherical slewing bearing", which has a reasonable structure.

[0040] In this embodiment, a traveling mechanism 12 is arranged at the bottom of the frame 1. The traveling mechanism 12 can be arranged on a track and travel along the track.

[0041] The flexible movement of the furnace barrel turning mechanism 2 is realized, and the operation efficiency is improved. The traveling mechanism 12 moves along the track, and can accurately move the turning mechanism 2 to different working areas, improving the adaptability of the equipment.

[0042] It is applicable to the turning operations of long furnace barrels or furnace barrels of various specifications, avoiding the use of multiple sets of equipment and reducing costs.

[0043] Among them, the traveling mechanism 12 includes two groups, and each group of the traveling mechanism 12 respectively includes an AC motor, a cycloidal pinwheel speed reducer, a gear pair, and a traveling wheel 121.

[0044] The double-group walking mechanism 12 is adopted to improve the load capacity and stability. The double drive (two groups of walking mechanisms 12) disperses the force of the frame 1 to avoid structural deformation caused by excessive single-point load. The two groups of walking mechanisms 12 are controlled synchronously to ensure that the equipment moves smoothly and without shaking, and the accuracy of the furnace drum flipping is guaranteed.

[0045] As a preference of the above embodiment, the frame 1 is larger than the set length and the counterweight at both ends of the cantilever 11 .

[0046] The ends of the cantilever 11 are longer than the set length, and counterweights are added to ensure that the frame 1 does not tilt forward or tip over during the flipping process. The counterweight is adjustable to adapt to furnaces of different weights and specifications, improving the versatility of the equipment. The load during flipping is reduced to increase the life of the equipment; the center of gravity distribution of the frame 1 is optimized to reduce the additional torque during flipping, reduce the load on the drive mechanism, and increase the life. The vibration and impact during the flipping of the furnace drum are reduced to ensure the stability of the operation and improve safety.

[0047] Embodiment 2: In this embodiment, the design and manufacture of the furnace drum turning machine are designed according to the principles of mechanics, and the design safety factor is more than 1. The specific calculation is: 1. When the workpiece is in a horizontal state, if the workpiece is flipped up, the thrust of the cylinder will be the largest.

[0048] 2. The weight of the turning seat is about 1350KG, and the weight of the workpiece is 10000kg; 3. T oil*arm>flip seat*arm+workpiece*arm; T oil*1.3m>1350*2.9m+10000*3.4m; It is concluded that: T oil>29 tons; Because there are two cylinders, the thrust of a single cylinder needs to be greater than 14.5 tons.

[0049] 4. The cylinder diameter is 125, the working pressure is 20MPa, and the cylinder thrust is 24 tons. The cylinder thrust requirements are met, and the thrust of a single cylinder is greater than 24 tons; Equipment overturning problem, fulcrum design requirements parameters: 1. The length of the workpiece is 5536mm, and the cylinder is relatively regular as a whole, so the center of gravity distance is 2768mm; Torque 10000×2.8m=28 tons; 2. Turning frame torque: 1350kg×3m=4 tons; 3. Machine torque: 5000×2.8m+675×3m+8500×2.1m=34 tons; 4. Therefore, the machine torque of 34 tons>28 tons + 4 tons. Therefore, this design of the fulcrum will not cause the workpiece to overturn.

[0050] According to the above calculations, the cylinder push force is completely greater than the weight of the workpiece. When the furnace drum is turned up or down, the maximum torque is greater than the furnace drum turning moment. The safety of the furnace drum turning over fully meets the requirements. At the same time, when the furnace drum is turned up or down, the gravity fulcrum on the four-wheel fulcrum and the cylinder fulcrum are designed so that the whole machine cannot overturn, so that the workpiece can be turned up, turned down and walked under the condition that the four-wheel fulcrum is stable. The safety performance of the whole machine is good; In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A furnace drum turning mechanism, characterized in that: include: A frame and a cantilever arranged on the top of the frame; A flipping mechanism, the flipping mechanism comprising a swing seat, the swing seat being rotatably disposed on the cantilever and flipping with a horizontal axis as a rotation axis; The rotary mechanism is arranged on the swing seat to fix the furnace drum. The rotary mechanism turns over with the swing seat and drives the furnace drum to rotate.

2. The furnace drum turning mechanism according to claim 1, characterized in that: One end of the swing seat in the length direction is rotatably connected to the cantilever, and the other end is provided with a hydraulic drive mechanism, and the hydraulic drive mechanism drives the swing seat to flip and rotate.

3. The furnace drum turning mechanism according to claim 2, characterized in that: The hydraulic drive mechanism includes two hydraulic rods, one end of which is rotatably arranged on the frame, and the other end is rotatably arranged on the swing seat. The two hydraulic rods are respectively arranged on both sides of the furnace drum and are symmetrically arranged with respect to the furnace drum.

4. The furnace drum turning mechanism according to claim 2, characterized in that: When the swing seat is horizontal, two supporting wheels are arranged at the bottom end in the horizontal direction. The two supporting wheels are parallel to the furnace drum and support the top of the furnace drum.

5. The furnace drum turning mechanism according to claim 1, characterized in that: The rotary mechanism comprises: A rotating disk, which is arranged on the swing seat and rotates with the axis of the furnace drum as the rotation axis, and the rotating disk fixes the flange side of the furnace drum; A driving motor, wherein the driving motor is fixedly arranged on the swing seat; The transmission mechanism is arranged between the driving motor and the rotating disk, transmits the power of the driving motor, and drives the rotating disk to rotate.

6. The furnace drum turning mechanism according to claim 5, characterized in that: The transmission mechanism includes a speed reducer and a gear component, wherein the speed reducer is in transmission connection with the driving motor, and the gear component is at least partially fixedly disposed on the rotary disk, and the gear component is in transmission connection with the speed reducer.

7. The furnace drum turning mechanism according to claim 1, characterized in that: A walking mechanism is arranged at the bottom of the frame, and the walking mechanism can be arranged on a track and travel along the track.

8. The furnace drum turning mechanism according to claim 7, characterized in that: The walking mechanism comprises two groups, and each group of the walking mechanism comprises an AC motor, a cycloid pinwheel reducer, a gear pair and a walking wheel.

9. The furnace drum turning mechanism according to claim 1, characterized in that: The frame is respectively larger than the set length and the counterweight at both ends of the cantilever.

Images