An in-furnace material conveying structure

Abstract

The utility model discloses a kind of in-furnace material conveying structures, it is related to blast furnace construction field.Aiming at the refractory material transport problem caused by no supporting ring at furnace waist or furnace shell not allowing to open temporary feeding hole when refractory material is built in the body of large blast furnace, the present application provides a kind of stable, efficient solution.The conveying structure includes furnace shell, furnace door, first support, second support, track, transport trolley, conveying crab and rotary lifting appliance.Operating trolley adopts double track+limiting plate structure design, ensure the stability in the process of transport, prevent derailment and carbon brick displacement.By pushing handrail to push trolley along track into furnace, then utilize rotary lifting appliance to receive carbon brick and accurately position building point.The utility model realizes the continuous uninterrupted transport of carbon brick from outside furnace to inside furnace, avoids the collision risk possibly caused by traditional segmented handling, and can be adapted to carbon brick of different sizes, improves construction efficiency and safety, reduces labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace construction, specifically to an in-furnace material conveying structure. Background Technology

[0002] The refractory lining of a large blast furnace is typically carried out in two sections. The first section, from the belly to the bottom and from the hearth to the belly, is the lining itself. The second section, from the support ring to the top, includes the waist, body, throat, and roof. The first section, due to its large workload and high quality requirements, is crucial to the furnace lining. When there is no support ring at the waist or the furnace shell does not allow for temporary feed holes at the waist, the lining must proceed from the first section upwards from the bottom to the roof. This makes refractory material transportation a major challenge. Because refractory production cycles are long and delivery times are relatively long, strict handling is required. The refractory must be transported smoothly and safely, with a stacking height not exceeding 2 meters, and must be protected from rain and moisture. Therefore, how to transport charcoal bricks from the taphole into the furnace while ensuring the quality of each brick is a pressing issue. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a material conveying structure in the furnace to achieve stable conveying of carbon bricks.

[0004] The technical solution adopted by this utility model to solve its technical problem is a material conveying structure inside a furnace, including a furnace shell, a furnace door provided on the furnace shell, a first support provided on the inner side of the furnace door, a second support provided on the outer side of the furnace door, two opposing tracks provided on the second support, the tracks passing through the furnace door and fixedly connected to the second support, and a transport trolley provided on the tracks.

[0005] The transport trolley includes a frame, and at least two sets of rotating bodies are rotatably connected to the lower part of the frame. Each set of rotating bodies includes a rotating rod, and wheels are provided at both ends of the rotating rod. Each wheel is in contact with a track.

[0006] A conveying trolley is provided on the outside of the second support, and a rotating hoist is provided inside the furnace shell.

[0007] Furthermore, each wheel is coaxially provided with a limiting plate, the outer diameter of which is larger than the outer diameter of the wheel, and the distance between the limiting plates on the two wheels of each set of rotating bodies is less than the minimum distance between the tracks.

[0008] Furthermore, the frame is provided with a push handle, which includes two opposing push rods connected at the middle by a connecting rod. The frame is provided with a connecting cylinder, and the push rods are inserted into the connecting cylinder.

[0009] Furthermore, the outer side of the frame is provided with a lifting lug.

[0010] Furthermore, the upper surface of the frame is provided with two opposing limiting plates, and the frame is provided with a driving device for driving the two limiting plates to move relative to each other.

[0011] Furthermore, the drive device includes a telescopic mechanism fixed to the vehicle frame, and the output end of the telescopic mechanism is fixedly connected to the limiting plate.

[0012] Furthermore, the drive device includes a fixing plate fixed to the frame, the fixing plate having a threaded hole, a threaded rod being provided in the threaded hole, one end of the threaded rod having a rotating wheel, and the other end being connected to a bearing in the middle of the limiting plate.

[0013] The beneficial effects of this utility model are as follows: The design of inner and outer tracks penetrating the furnace door enables continuous and uninterrupted transport of charcoal bricks from outside to inside the furnace, avoiding the collision risks associated with traditional segmented handling. The double-track + limiting plate structure of the transport trolley: the outer diameter of the limiting plate on each set of wheels is larger than the wheel, and the distance between the two limiting plates is less than the minimum track spacing, effectively preventing the trolley from derailing and ensuring stable transport of charcoal bricks. The distance between the two limiting plates can be adjusted via a telescopic mechanism or threaded rod to accommodate charcoal bricks of different sizes, preventing displacement during transport. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection between the transport trolley and the track;

[0016] Figure 3 This is a front view of the first embodiment of the transport trolley;

[0017] Figure 4 yes Figure 3 Top view;

[0018] Figure 5 This is a front view of the second embodiment of the transport trolley;

[0019] Figure 6 yes Figure 5 Top view.

[0020] Reference numerals in the attached drawings: 1-furnace shell; 2-furnace door; 3-first support; 4-second support; 5-track; 6-transport trolley; 7-conveying trolley; 8-rotating hoist; 9-chassis; 10-rotating rod; 11-wheel; 12-limiting plate; 13-push rod; 14-connecting rod; 15-connecting cylinder; 16-lifting lug; 17-limiting plate; 18-telescopic mechanism; 19-fixed plate; 20-threaded rod; 21-rotating wheel. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] like Figure 1 As shown, the present invention discloses a material conveying structure inside a furnace, including a furnace shell 1, a furnace door 2 provided on the furnace shell 1, a first support 3 provided on the inner side of the furnace door 2, a second support 4 provided on the outer side of the furnace door 2, two opposing tracks 5 provided on the second support 4, the tracks 5 passing through the furnace door 2 and fixedly connected to the second support 4, and a transport trolley 6 provided on the tracks 5.

[0023] The transport trolley 6 includes a frame 9, and at least two sets of rotating bodies are rotatably connected to the lower part of the frame 9. Each set of rotating bodies includes a rotating rod 10, and wheels 11 are provided at both ends of the rotating rod 10. Each wheel 11 is in contact with a track 5.

[0024] A conveying trolley 7 is provided on the outside of the second support 4, and a rotating hoist 8 is provided inside the furnace shell 1.

[0025] The first support 3 and the second support 4 are both truss structures constructed from steel pipes. The distance between the upper end face of the first support 3 and the second support 4 and the lower end face of the furnace door 2 is 1-50mm, ensuring that the track 5 runs straight through the furnace door 2. The track 5 can be made of I-beams or angle steel. The track 5 passes through the furnace door 2, and its outer side is welded and fixed to the second support 4, while its inner side is welded and fixed to the upper end face of the first support 3. The distance between the two tracks 5 is set according to the span of the wheel 11, and the parallelism error is ≤2mm / m. The rotating rod 10 can be connected to the bearing of the frame 9 through the bearing seat, and the wheels 11 are then coaxially fixed at both ends of the rotating rod 10. Alternatively, the rotating rod 10 can be fixedly connected to the frame 9, and the wheels 11 can be installed through the thrust ball bearing to achieve the rotational connection between the rotating body and the frame 9. The charcoal bricks are hoisted from the conveying trolley 7 outside the furnace to the transport trolley 6 on the track 5. The operator pushes the trolley by moving the handrail, and it passes through the furnace door 2 along the track 5 to enter the furnace. The rotating hoist 8 inside the furnace receives the charcoal bricks and accurately positions the laying point.

[0026] To improve the stability of the transport trolley 6 on track 5; further, see... Figure 2Each wheel 11 is coaxially provided with a limiting plate 12. The outer diameter of the limiting plate 12 is larger than the outer diameter of the wheel 11. The distance between the limiting plates 12 on the two wheels 11 of each group of rotating bodies is less than the minimum distance between the tracks 5. The outer diameter of the limiting plate 12 is 10-15mm larger than that of the wheel 11. The distance between the two limiting plates 12 in the same group is 5-8mm smaller than the minimum distance between the tracks 5, forming a mechanical jamming. When the conveying trolley 6 deviates, the limiting plate 12 collides with the web of the track 5 to prevent derailment.

[0027] To further facilitate the movement of the conveyor trolley 6, see [link / reference] Figure 2 The frame 9 is equipped with a push handle, which includes two opposing push rods 13 connected at the middle by a connecting rod 14. A connecting cylinder 15 is provided on the frame 9, and the push rods 13 are inserted into the connecting cylinder 15. The push rods 13 are inserted into the connecting cylinder 15 of the frame 9, and the middle is reinforced by the connecting rod 14 to ensure that the pushing force is evenly transmitted to the frame 9, preventing tipping.

[0028] To facilitate the transport of the conveyor trolley 6 onto track 5, further see... Figure 4 and Figure 6 The outer side of the frame 9 is provided with lifting lugs 16. The lifting lugs 16 are arranged around the frame 9 and are connected to the lifting lugs 16 by the lifting steel ropes on the conveying trolley 7 for lifting the conveying trolley 6.

[0029] To prevent the charcoal bricks from shifting during transportation, further details can be found in the following section. Figure 3 - Figure 6 The upper surface of the frame 9 is provided with two opposing limiting plates 17, and the frame 9 is provided with a driving device for driving the two limiting plates 17 to move relative to each other. A space for placing charcoal bricks is formed between the two limiting plates 17. The limiting plates 17 are driven to move relative to each other by the driving device to clamp the charcoal bricks. Preferably, shock-absorbing pads are provided on the opposing surfaces of the limiting plates 17 to avoid rigid connection between the limiting plates 17 and the charcoal bricks and to ensure the quality of the charcoal bricks.

[0030] Example 1 of the drive device, see Figure 3 and Figure 4 Furthermore, the driving device includes a telescopic mechanism 18 fixed to the frame 9, and the output end of the telescopic mechanism 18 is fixedly connected to the limiting plate 17. The telescopic mechanism 18, such as a hydraulic cylinder or a pneumatic cylinder, is mounted on the frame 9, and its output end directly drives the limiting plate 17 to clamp the carbon brick.

[0031] Example 2 of the drive device, see Figure 5 and Figure 6Furthermore, the driving device includes a fixing plate 19 fixed to the frame 9. The fixing plate 19 has a threaded hole, and a threaded rod 20 is disposed in the threaded hole. One end of the threaded rod 20 is provided with a rotating wheel 21, and the other end is connected to the central bearing of the limiting plate 17. By rotating the rotating wheel 21 on the fixing plate 19, the threaded rod 20 is driven to slide along the upper surface of the limiting plate 17, thereby achieving precise manual adjustment.

[0032] The specific operation process of this utility model is as follows:

[0033] Loading phase:

[0034] The conveying trolley 7 lifts the carbon brick and places it on the conveying trolley 6. The telescopic mechanism 18 is activated or the threaded rod 20 is rotated to clamp the carbon brick with the limiting plate 17.

[0035] Conveying stage:

[0036] The operator pushes the push handle to make the conveyor trolley 6 slide into the furnace along the track 5. At this time, the limit plate 12 restrains the web of the track 5 throughout the entire process to prevent the trolley from deviating from the track 5.

[0037] Transition phase:

[0038] When the conveying trolley 6 arrives at the predetermined position, the rotating hoist 8 locks the carbon bricks and delivers the carbon bricks to the masonry surface. Then, the operator pulls the push handle to move the conveying trolley 6 out of the furnace along the track 5.

[0039] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A material conveying structure inside a furnace, comprising a furnace shell (1), wherein a furnace door (2) is provided on the furnace shell (1), characterized in that: The furnace door (2) is provided with a first support (3) on the inner side and a second support (4) on the outer side. The second support (4) is provided with two opposing tracks (5). The tracks (5) pass through the furnace door (2) and are fixedly connected to the second support (4). A transport trolley (6) is provided on the tracks (5). The transport trolley (6) includes a frame (9), and at least two sets of rotating bodies are rotatably connected to the bottom of the frame (9). Each set of rotating bodies includes a rotating rod (10), and wheels (11) are provided at both ends of the rotating rod (10). Each wheel (11) is in contact with a track (5). A conveying trolley (7) is provided on the outside of the second support (4), and a rotating hoist (8) is provided inside the furnace shell (1).

2. The furnace material conveying structure as described in claim 1, characterized in that: Each wheel (11) is coaxially provided with a limiting plate (12), the outer diameter of the limiting plate (12) is greater than the outer diameter of the wheel (11), and the distance between the limiting plates (12) on the two wheels (11) of each set of rotating bodies is less than the minimum distance between the tracks (5).

3. The furnace material conveying structure as described in claim 1, characterized in that: The frame (9) is provided with a push handle, which includes two opposing push rods (13). The middle part of the push rods (13) is connected by a connecting rod (14). The frame (9) is provided with a connecting tube (15), and the push rods (13) are inserted into the connecting tube (15).

4. The furnace material conveying structure as described in claim 1, characterized in that: The outer side of the frame (9) is provided with a lifting lug (16).

5. The furnace material conveying structure as described in claim 1, characterized in that: The upper surface of the frame (9) is provided with two opposing limiting plates (17), and the frame (9) is provided with a driving device for driving the two limiting plates (17) to move relative to each other.

6. The furnace material conveying structure as described in claim 5, characterized in that: The drive unit includes a telescopic mechanism (18) fixed on the frame (9), and the output end of the telescopic mechanism (18) is fixedly connected to the limiting plate (17).

7. The furnace material conveying structure as described in claim 5, characterized in that: The drive device includes a fixing plate (19) fixed on the frame (9), the fixing plate (19) is provided with a threaded hole, a threaded rod (20) is provided in the threaded hole, one end of the threaded rod (20) is provided with a rotating wheel (21), and the other end is connected to the central bearing of the limiting plate (17).

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