Lifting mechanism for walking beam type heating furnace

Abstract

The utility model provides a lifting mechanism for a walking beam type heating furnace, which relates to the technical field of heating furnaces and comprises a heating furnace body and a chain wheel shaft, the bottom of the heating furnace body is fixedly connected with a base, the top of the base is fixedly connected with a fixing mechanism, and the fixing mechanism comprises a vertical rod, a cross rod and a fixing frame. Vertical rods are fixedly connected to the two sides of the heating furnace body, cross rods are fixedly connected to the tops of the vertical rods, and a fixing frame is fixedly connected to the tops of the cross rods. A chain shaft is arranged on the inner wall of the fixing frame, a chain is arranged on the outer side of the chain shaft, one end of the chain is fixedly connected with a furnace door, and the other end of the chain is fixedly connected with a hydraulic cylinder which is fixedly connected to the outer side of the heating furnace body. According to the lifting mechanism, through optimization design, the operation stability and the sealing performance of the furnace door are remarkably improved, refractory falling and steel plate deformation are effectively avoided, heat loss is reduced, the service life is prolonged, and the heating furnace lifting mechanism is firm, durable and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a lifting mechanism for a walking beam type heating furnace. Background Art

[0002] With the continuous advancement of technology and the market's increasingly higher requirements for strip quality, the rolling mill has increasingly stringent requirements on the quality of heating furnace slabs. The heating furnace equipped with the wide and thick plate rolling mill not only has a large output and heats many types of steel, but also the temperature of the heated slabs must be uniform. The temperature difference over the entire length of the slab, the temperature difference inside and outside, and the temperature difference of the black mark at the contact water beam must be small. At the same time, the continuous advancement and application of hot charging technology requires that the heating furnace must also adapt to the process requirements of hot charging. Therefore, the heating furnace of the wide and thick plate rolling mill should be a heating furnace with a high degree of automation, strong adaptability, high equipment and control levels, energy saving, pollution-free, advanced indicators, and internationally advanced level.

[0003] The walking beam type heating furnace is equipped with a furnace door for sealing the heating furnace. The furnace door of the walking beam type heating furnace is usually opened and closed by a lifting device. The lifting mechanism of the existing heating furnace door has a poor lifting effect on the furnace door and poor sealing, which is not conducive to use. Therefore, it is necessary to provide a new lifting mechanism for the walking beam type heating furnace to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a lifting mechanism for a walking beam type heating furnace with good lifting effect.

[0005] The utility model provides a lifting mechanism for a walking beam type heating furnace, comprising a heating furnace body and a sprocket shaft; the bottom of the heating furnace body is fixedly connected with a base, the top of the base is fixedly connected with a fixing mechanism, the fixing mechanism comprises a vertical rod, a horizontal rod and a fixing frame, both sides of the heating furnace body are fixedly connected with vertical rods, the top of the vertical rods is fixedly connected with a horizontal rod, and the top of the horizontal rod is fixedly connected with a fixing frame;

[0006] A sprocket shaft is arranged on the inner wall of the fixed frame, a chain is arranged on the outer side of the sprocket shaft, one end of the chain is fixedly connected with the furnace door, the other end of the chain is fixedly connected with the hydraulic cylinder, and the hydraulic cylinder is fixedly connected to the outer side of the heating furnace body.

[0007] In order to prevent the chain from detaching from the hydraulic cylinder, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, the chain and the hydraulic cylinder are fixedly connected by an anti-falling mechanism. The anti-falling mechanism includes a connecting block, a fixing groove, a connecting rod and a fixing block. The top of the connecting block is welded to one end of the chain, the connecting block is clamped in the fixing groove, the bottom of the connecting block is fixedly connected to the connecting rod, the bottom of the connecting rod is fixedly connected to the fixing block, and the bottom of the fixing block is fixedly connected to the piston rod of the hydraulic cylinder.

[0008] In order to strengthen the firmness between the chain and the furnace door, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, the chain and the furnace door are fixedly connected by a connecting mechanism. The connecting mechanism includes a fixing frame and a mounting block. The bottom of the fixing frame is fixedly connected to the top of the furnace door. The top of the fixing frame is welded with a mounting block, and one end of the chain is fixedly connected to the inside of the mounting block.

[0009] In order to improve the stability of the furnace door, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, high temperature resistant sliders are fixedly connected to both sides of the furnace door, and the inner wall of the vertical rod is provided with a sliding groove used in conjunction with the slider.

[0010] In order to increase the sealing performance of the furnace door, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, a protective plate is fixedly connected to the inner side of the vertical rod, and the bottom of the protective plate is fixedly connected to the top of the base.

[0011] In order to improve the rigidity of the furnace door, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, a reinforcing rib is welded on one side of the furnace door, and the reinforcing rib is welded by steel plates.

[0012] In order to improve the stability of the crossbar, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, a reinforcement block is fixedly connected to one side of the vertical rod, and the top of the reinforcement block is fixedly connected to the bottom of the crossbar.

[0013] In order to improve the firmness of the upright pole, the utility model provides a lifting mechanism for a walking beam type heating furnace. Preferably, a reinforcing plate is fixedly connected to the connection between the reinforcing block and the upright pole, and fastening bolts are arranged inside the reinforcing plate.

[0014] The utility model discloses a lifting mechanism for a walking beam type heating furnace. When the furnace door needs to be opened, the hydraulic cylinder is opened, and the chain is driven to rotate on the outside of the sprocket shaft by the contraction of the hydraulic cylinder, so that the chain drives the furnace door to rise, thereby opening the heating furnace body. The device also provides an anti-falling mechanism to make the connection between the chain and the hydraulic cylinder more secure, to prevent the chain from falling off the piston rod of the hydraulic cylinder during use, and to affect the lifting of the furnace door. The connection mechanism is provided to make the connection between the chain and the furnace door more secure, to prevent the furnace door from falling off, and at the same time, the connection between the installation block and the chain is fixed to the center of the furnace door. The center line is vertical, so that the furnace door can be kept stable when it is lifted or lowered. By arranging sliders and slide grooves, the connection between the furnace door and the vertical rod can be strengthened when the furnace door is lifted or lowered, so that the lifting of the furnace door is more stable and faster. By arranging a protective plate, the bottom of the furnace door can be protected. By raising the furnace door, the slope of the bottom of the furnace door fits tightly with the slope of the end wall, which can improve the sealing of the furnace door. By arranging reinforcing ribs, the strength of the furnace door is improved, and the service life of the furnace door can be extended, which solves the problem that the lifting mechanism of the furnace door of the existing heating furnace has a poor lifting effect on the furnace door and is not conducive to use.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In the utility model, when the furnace door needs to be opened, the hydraulic cylinder is opened, and the contraction of the hydraulic cylinder drives the outer side of the chain wheel shaft to rotate, thereby driving the furnace door to rise. Therefore, the lifting mechanism for the walking beam type heating furnace can realize automatic operation.

[0017] 2. The utility model improves the lifting mechanism, realizes the smooth rise of the furnace door, simplifies the operation process and improves efficiency. First, an anti-falling mechanism, a stable connection mechanism and reinforcement ribs are set to ensure the safety of the furnace door lifting; secondly, the slider and the slide groove are matched, and a precise centering design is added to make the lifting process of the furnace door more stable and fast; finally, in order to solve the offset problem and extend the service life of the furnace door, the two sides of the furnace door are designed to run in the slide groove, which also prevents the furnace door from scratching the furnace lining.

[0018] 3. The protective plate at the bottom of the utility model and the design of the close fit between the bottom slope of the furnace door and the end wall slope improve the sealing performance of the furnace door. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a preferred embodiment of a lifting mechanism for a walking beam type heating furnace provided by the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the fixing mechanism shown;

[0021] Figure 3 for Figure 1 The structural schematic diagram of the anti-falling mechanism shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the connection between the connecting mechanism and the furnace door.

[0023] Numbers in the figure: 1. Heating furnace body; 2. Base; 3. Fixing mechanism; 31. Vertical rod; 32. Crossbar; 33. Fixing frame; 4. Sprocket shaft; 5. Chain; 6. Furnace door; 7. Hydraulic cylinder; 8. Anti-drop mechanism; 81. Connecting block; 82. Fixing groove; 83. Connecting rod; 84. Fixing block; 9. Connecting mechanism; 91. Fixing frame; 92. Mounting block; 10. Sliding block; 11. Sliding groove; 12. Protective plate; 13. Reinforcement rib; 14. Reinforcement block; 15. Reinforcement plate. 16. Slope at the bottom of the furnace door. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in Figure 1 This is a structural schematic diagram of a preferred embodiment of the lifting mechanism for a walking beam type heating furnace provided by the utility model. Figure 2 for Figure 1 The structural diagram of the fixing mechanism shown in FIG. Figure 3 for Figure 1 The structural diagram of the anti-falling mechanism is shown in FIG. Figure 4 for Figure 1 The lifting mechanism for a walking beam type heating furnace comprises a heating furnace body 1 and a sprocket shaft 4.

[0028] In the specific implementation process, Figure 1 and Figure 2As shown, the bottom of the heating furnace body 1 is fixedly connected to the base 2, the top of the base 2 is fixedly connected to the fixing mechanism 3, the fixing mechanism 3 includes a vertical rod 31, a horizontal rod 32 and a fixing frame 33, both sides of the heating furnace body 1 are fixedly connected to the vertical rod 31, the top of the vertical rod 31 is fixedly connected to the horizontal rod 32, and the top of the horizontal rod 32 is fixedly connected to the fixing frame 33.

[0029] A sprocket shaft 4 is provided on the inner wall of the fixed frame 33 , a chain 5 is provided on the outer side of the sprocket shaft 4 , one end of the chain 5 is fixedly connected to a furnace door 6 , the other end of the chain 5 is fixedly connected to a hydraulic cylinder 7 , and the hydraulic cylinder 7 is fixedly connected to the outer side of the heating furnace body 1 .

[0030] It should be noted that: the furnace door 6 is in a closed state by default. When the furnace door 6 needs to be opened, the hydraulic cylinder 7 is opened, and the chain 5 is driven to rotate on the outside of the sprocket shaft 4 by the contraction of the hydraulic cylinder 7, so that the chain 5 drives the furnace door 6 to rise, thereby opening the heating furnace body 1. In this device, an anti-falling mechanism 8 is also provided to make the connection between the chain 5 and the hydraulic cylinder 7 more secure, to prevent the chain 5 from falling off the piston rod of the hydraulic cylinder 7 during use, thereby affecting the lifting and lowering of the furnace door 6. By providing a connecting mechanism 9, the connection between the chain 5 and the furnace door 6 is made more secure, to prevent the furnace door 6 from falling off. At the same time, the center line of the furnace door 6 at the connection between the mounting block 92 and the chain 5 can be perpendicular, so that the furnace door 6 can be kept stable during lifting and lowering.

[0031] refer to Figure 1 and Figure 3 As shown, the chain 5 and the hydraulic cylinder 7 are fixedly connected by an anti-falling mechanism 8, and the anti-falling mechanism 8 includes a connecting block 81, a fixing groove 82, a connecting rod 83 and a fixing block 84. The top of the connecting block 81 is welded to one end of the chain 5, and the connecting block 81 is clamped in the fixing groove 82. The bottom of the connecting block 81 is fixedly connected to the connecting rod 83, and the bottom of the connecting rod 83 is fixedly connected to the fixing block 84. The bottom of the fixing block 84 is fixedly connected to the piston rod of the hydraulic cylinder 7.

[0032] It should be noted that the anti-drop mechanism 8 is provided to make the connection between the chain 5 and the hydraulic cylinder 7 more secure, thereby preventing the chain 5 from dropping off from the piston rod of the hydraulic cylinder 7 during use, thereby affecting the lifting and lowering of the furnace door 6 .

[0033] refer to Figure 1 and Figure 4 As shown, the chain 5 and the furnace door 6 are fixedly connected by a connecting mechanism 9, and the connecting mechanism 9 includes a fixing frame 91 and a mounting block 92. The bottom of the fixing frame 91 is fixedly connected to the top of the furnace door 6, and the mounting block 92 is welded to the top of the fixing frame 91. One end of the chain 5 is fixedly connected to the inside of the mounting block 92.

[0034] It should be noted that: by providing the connecting mechanism 9, the connection between the chain 5 and the furnace door 6 is made more secure to prevent the furnace door 6 from falling. At the same time, the center line of the furnace door 6 at the connection between the mounting block 92 and the chain 5 is perpendicular, so that the furnace door 6 can be kept stable when lifting.

[0035] refer to Figure 2 and Figure 4 As shown, sliders 10 are fixedly connected to both sides of the furnace door 6 , and a slide groove 11 for use with the sliders 10 is provided on the inner wall of the vertical rod 31 .

[0036] It should be noted that by providing the slider 10 and the slide groove 11 , when the furnace door 6 is raised or lowered, the connection between the furnace door 6 and the vertical rod 31 can be strengthened, so that the raising or lowering of the furnace door 6 is more stable.

[0037] refer to Figure 1 and Figure 4 As shown, a protective plate 12 is fixedly connected to the inner side of the vertical pole 31 , and the bottom of the protective plate 12 is fixedly connected to the top of the base 2 .

[0038] A reinforcing rib 13 is welded to one side of the furnace door 6, and the reinforcing rib 13 is welded from steel plates.

[0039] It should be noted that by providing the protective plate 12, the bottom of the furnace door 6 can be protected and the sealing of the furnace door 6 can be improved. By providing the reinforcing ribs 13, the strength of the furnace door 6 is improved and the service life of the furnace door 6 can be extended.

[0040] refer to Figure 4 As shown, a reinforcement block 14 is fixedly connected to one side of the vertical rod 31, and the top of the reinforcement block 14 is fixedly connected to the bottom of the cross bar 32. The connection between the vertical rod 31 and the furnace door 6 is changed to a steel structure plus a refractory structure, with a slide groove in the middle, which is convenient for the lifting and lowering of the furnace door 6 and the sealing between the furnace door and the vertical rod.

[0041] A reinforcing plate 15 is fixedly connected to the connection between the reinforcing block 14 and the vertical pole 31 , and a fastening bolt is arranged inside the reinforcing plate 15 .

[0042] It should be noted that: by providing the reinforcement block 14 , the connection between the vertical rod 31 and the horizontal rod 32 can be reinforced, and by providing the reinforcement plate 15 , the firmness of the vertical rod 31 is improved.

[0043] The working principle of the lifting mechanism for a walking beam type heating furnace provided by the utility model is as follows:

[0044] In the utility model, the effective furnace length of the heating furnace body 1 is 40m, the total length is 41.4m, the inner width of the furnace chamber is 8.12m, the furnace brick width is 9.16m, the furnace door 6 is the loading end door, the full lifting stroke of the furnace door 6 is 0-800mm, the lifting speed of the furnace door 6 is 0-10m / min, the specification of the hydraulic cylinder 7 is Φ100 / 70, and the furnace door 6 is closed by default.

[0045] When the furnace door 6 needs to be opened, the hydraulic cylinder 7 is opened, and the chain 5 is driven to rotate on the outside of the sprocket shaft 4 by the contraction of the hydraulic cylinder 7, so that the chain 5 drives the furnace door 6 to rise, thereby opening the heating furnace body 1. In this device, an anti-falling mechanism 8 is also provided to make the connection between the chain 5 and the hydraulic cylinder 7 more secure, so as to prevent the chain 5 from falling off from the piston rod of the hydraulic cylinder 7 during use, thereby affecting the lifting and lowering of the furnace door 6. By providing a connecting mechanism 9, the connection between the chain 5 and the furnace door 6 is made more secure, so as to prevent the furnace door 6 from falling off. At the same time, the center line of the furnace door 6 at the connection between the mounting block 92 and the chain 5 is perpendicular, so that the furnace door 6 can be kept stable when it is lifted or lowered. By arranging the slider 10 and the slide groove 11, the connection between the furnace door 6 and the vertical rod 31 can be strengthened when the furnace door 6 is lifted or lowered, so that the lifting of the furnace door 6 is more stable. By arranging the protective plate 12 and making an inclined slide groove, which fits with the bottom inclined surface of the furnace door 6, the sealing of the furnace door 6 can be improved. By arranging the reinforcing rib 13, the strength of the furnace door 6 is improved, and the service life of the furnace door 6 can be extended.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A lifting mechanism for a walking beam heating furnace, It is characterized in that include: A heating furnace body (1) and a sprocket shaft (4); the bottom of the heating furnace body (1) is fixedly connected to a base (2), the top of the base (2) is fixedly connected to a fixing mechanism (3), the fixing mechanism (3) comprises a vertical rod (31), a horizontal rod (32) and a fixing frame (33), both sides of the heating furnace body (1) are fixedly connected to the vertical rod (31), the top of the vertical rod (31) is fixedly connected to the horizontal rod (32), and the top of the horizontal rod (32) is fixedly connected to the fixing frame (33); A sprocket shaft (4) is provided on the inner wall of the fixed frame (33), a chain (5) is provided on the outer side of the sprocket shaft (4), one end of the chain (5) is fixedly connected to a furnace door (6), the other end of the chain (5) is fixedly connected to a hydraulic cylinder (7), and the hydraulic cylinder (7) is fixedly connected to the outer side of the heating furnace body (1).

2. The lifting mechanism for a walking beam heating furnace according to claim 1, It is characterized in that The chain (5) and the hydraulic cylinder (7) are fixedly connected via an anti-falling mechanism (8), the anti-falling mechanism (8) comprising a connecting block (81), a fixing groove (82), a connecting rod (83) and a fixing block (84), the top of the connecting block (81) is welded to one end of the chain (5), the connecting block (81) is clamped in the fixing groove (82), the bottom of the connecting block (81) is fixedly connected to the connecting rod (83), the bottom of the connecting rod (83) is fixedly connected to the fixing block (84), and the bottom of the fixing block (84) is fixedly connected to the piston rod of the hydraulic cylinder (7).

3. The lifting mechanism for a walking beam type heating furnace according to claim 1, It is characterized in that The chain (5) and the furnace door (6) are fixedly connected via a connecting mechanism (9), the connecting mechanism (9) comprising a fixing frame (91) and a mounting block (92), the bottom of the fixing frame (91) is fixedly connected to the top of the furnace door (6), the top of the fixing frame (91) is welded with the mounting block (92), and one end of the chain (5) is fixedly connected to the inside of the mounting block (92).

4. The lifting mechanism for a walking beam type heating furnace according to claim 1, It is characterized in that Slide blocks (10) are fixedly connected to both sides of the furnace door (6), and a slide groove (11) for use with the slide blocks (10) is provided on the inner wall of the vertical rod (31).

5. The lifting mechanism for a walking beam type heating furnace according to claim 1, It is characterized in that A protective plate (12) is fixedly connected to the inner side of the vertical pole (31), and the bottom of the protective plate (12) is fixedly connected to the top of the base (2).

6. The lifting mechanism for a walking beam type heating furnace according to claim 1, It is characterized in that A reinforcing rib (13) is welded to one side of the furnace door (6), and the reinforcing rib (13) is formed by welding steel plates.

7. The lifting mechanism for a walking beam type heating furnace according to claim 1, It is characterized in that A reinforcing block (14) is fixedly connected to one side of the vertical rod (31), and the top of the reinforcing block (14) is fixedly connected to the bottom of the horizontal rod (32).

8. The lifting mechanism for a walking beam type heating furnace according to claim 7, It is characterized in that A reinforcing plate (15) is fixedly connected to the connection point between the reinforcing block (14) and the vertical pole (31), and a fastening bolt is arranged inside the reinforcing plate (15).

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