Blast furnace hot-metal bottle online capping device convenient and safe to use

Abstract

The utility model discloses a blast furnace hot-metal ladle online capping device convenient and safe to use, belongs to the technical field of blast furnace hot-metal ladle equipment, and is used for carrying out online capping on a blast furnace hot-metal ladle. According to the technical scheme, a left ladle cover and a right ladle cover are semicircular steel ladle covers respectively, a left capping support and a right capping support are fixed to the portions, on the two sides of a molten iron tank, of a vehicle frame respectively, the left capping support, a left swing connecting rod, a left telescopic connecting rod and a left capping connecting rod are sequentially connected, and the right capping support, a right swing connecting rod, a right telescopic connecting rod and a right capping connecting rod are sequentially connected. The front ends of the left capping connecting rod and the right capping connecting rod are respectively connected with the rear parts of the left ladle cover and the right ladle cover, the left swinging connecting rod, the left telescopic connecting rod, the left capping connecting rod, the left pull rod, the right swinging connecting rod, the right telescopic connecting rod, the right capping connecting rod and the right pull rod are respectively connected with driving oil cylinders, and each oil cylinder is respectively connected with a hydraulic driving device. According to the utility model, the ladle cover can be opened and closed below the swinging iron runner of the blast furnace casting house, so that the safety of operators is ensured.

Description

Technical Field

[0001] This utility model relates to an online capping device for blast furnace molten iron ladle, belonging to the technical field of blast furnace molten iron ladle equipment. Background Technology

[0002] The waiting time for molten iron in ladles from the blast furnace tapping area to be tapped and transported to the steelmaking workshop for molten iron mixing is relatively long. During transportation and waiting, the molten iron in the ladles will experience temperature drops, which not only wastes energy and increases fuel consumption, but also makes it difficult to add more scrap steel during the steelmaking process. At the same time, iron oxide scale and soot will escape from the open mouth of the molten iron ladle, polluting the environment during transportation and waiting.

[0003] Currently, some domestic steel companies use simple online ladle capping devices for blast furnace molten iron ladles. While these devices can achieve heat preservation, they require manual operation with auxiliary tools to open the ladle, increasing the complexity of production operations and posing significant safety hazards, thus limiting their application. Other companies use fixed-arm type online ladle capping devices. These devices allow for remote operation of the ladle cap opening and closing, but require considerable space to open. Due to the limited space between the blast furnace tapping area and the molten iron ladle, this method cannot be performed directly at the blast furnace tapping area, further limiting its use.

[0004] Therefore, the online blast furnace molten iron ladle covering devices used in the industry all have certain defects and cannot meet the needs of production. It is very necessary to design and manufacture an online blast furnace molten iron ladle covering device that is easy to use and safe to operate. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an online lid-closing device for blast furnace molten iron ladles that is convenient and safe to use. This lid-closing device has a high level of automation and can complete the opening and closing of the lid under the swing iron trough in the blast furnace tapping area, reducing the heat loss of molten iron, ensuring the personal safety of operators, and greatly simplifying the operation process.

[0006] The technical solution to the above technical problem is:

[0007] A convenient and safe online ladle capping device for blast furnaces includes a left ladle cover, a right ladle cover, a left capping support, a left swinging connecting rod, a left telescopic connecting rod, a left capping connecting rod, a left swinging cylinder, a left telescopic cylinder, a left capping cylinder, a right capping support, a right swinging connecting rod, a right telescopic connecting rod, a right capping connecting rod, a right swinging cylinder, a right telescopic cylinder, a right capping cylinder, a left pull rod, a right pull rod, and a hydraulic drive device. The left and right ladle covers are semi-circular steel ladle covers, located on either side of the ladle's outlet. The left and right capping supports are fixed to the frames of ladle transport trolleys on either side of the ladle. The lower ends of the two left and two right swinging connecting rods are connected to the upper ends of the left and right capping supports, respectively. The two left swinging... The connecting rod, two left telescopic connecting rods, and two left cover connecting rods are connected in sequence. The two right swing connecting rods, two right telescopic connecting rods, and two right cover connecting rods are connected in sequence. The front ends of the two left cover connecting rods and the two right cover connecting rods are connected to the rear of the left and right covers, respectively. The two left swing cylinders, two left telescopic cylinders, and two left cover cylinders are connected to the two left swing connecting rods, two left telescopic connecting rods, two left cover connecting rods, and two left pull rods, respectively. The two right swing cylinders, two right telescopic cylinders, and two right cover cylinders are connected to the two right swing connecting rods, two right telescopic connecting rods, two right cover connecting rods, and two right pull rods, respectively. The two left pull rods and the two right pull rods are connected to the two sides of the left and right covers, respectively. Each cylinder is connected to a hydraulic drive device.

[0008] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles has the same structure for the left capping support as the right capping support. The left capping support consists of two pillars, which are located at the front and rear of the left side of the molten iron ladle, respectively. The lower ends of the two pillars are welded to the frame of the molten iron ladle trolley, and the upper ends of the two pillars are rotatably connected to the lower ends of the two left swinging connecting rods by a rotating shaft.

[0009] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles has the same structure for the two left swinging connecting rods as for the two right swinging connecting rods. The two left swinging connecting rods are square tubes, and their lower ends are rotatably connected to the upper ends of the two pillars of the left capping support by rotating shafts. The lower front ends of the two left swinging connecting rods are welded with connecting plates, and two shaft holes are arranged on the connecting plates. The lower ends of the two left swinging cylinders are connected to the two pillars of the left capping support, and the front ends of the push rods of the two left swinging cylinders are connected to one shaft hole of the connecting plate at the front end of the two left swinging connecting rods by rotating shafts.

[0010] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles has the same structure for the two left telescopic connecting rods as for the two right telescopic connecting rods. The two left telescopic connecting rods are square tubes, and their upper ends are connected by a crossbar to form an N-shaped frame. The lower parts of the square tubes of the two left telescopic connecting rods are respectively inserted into the inner holes of the upper ends of the square tubes of the left swing connecting rods. The square tubes of the two left telescopic connecting rods and the inner holes of the upper ends of the square tubes of the two left swing connecting rods are in sliding fit. The upper parts of the two left telescopic connecting rods are respectively connected to the upper ends of the push rods of the two left telescopic cylinders through rotating shafts. The lower ends of the two left telescopic cylinders are respectively connected to the other shaft holes of the connecting plates at the front ends of the two left swing connecting rods through rotating shafts.

[0011] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles has the same structure for the two left capping connecting rods as for the two right capping connecting rods. Two parallel rotating shaft plates are fixed on the crossbar connected to the upper end of the two left telescopic connecting rods. The rotating shaft plates have shaft holes in the center. The two left capping connecting rods are long rods. The front ends of the two left capping connecting rods are welded to the two rear ends of the left ladle cover respectively. The rear ends of the two left capping connecting rods are rotatably connected to the shaft holes of the rotating shaft plates on the crossbar between the two left telescopic connecting rods through rotating shafts.

[0012] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles has the same structure for the two left capping cylinders as for the two right capping cylinders. The outer sides of the two left telescopic connecting rods are respectively fixedly welded to N-shaped frames. The top surface of the N-shaped frames has shaft holes. The two left capping cylinders are inserted into the N-shaped frames. The two left capping cylinders are connected to the shaft holes of the N-shaped frames through rotating shafts. The upper ends of the push rods of the two left capping cylinders are respectively connected to the two sides of the left ladle cover through rotating shafts via left pull rods.

[0013] The aforementioned convenient and safe online capping device for blast furnace molten iron ladles includes a hydraulic drive unit comprising an oil tank, a DC motor, an oil pump, a check valve, a main hydraulic pipeline, and three hydraulic drive units. The oil tank, DC motor, oil pump, and check valve are respectively installed at one end of the frame of the molten iron ladle transport trolley. The DC motor is connected to the oil pump, the oil pump inlet is connected to the oil tank, and the oil pump outlet is connected to the three hydraulic drive units respectively through the main hydraulic pipeline. The check valve is installed in the main hydraulic pipeline. The three hydraulic drive units have the same structure and are respectively connected to two left swing cylinders and two right swing cylinders, two left telescopic cylinders and two right telescopic cylinders, two left capping cylinders and two right capping cylinders.

[0014] The above-mentioned convenient and safe online capping device for blast furnace molten iron ladles includes three hydraulic drive units, each comprising a hydraulic branch, an electromagnetic directional valve, a one-way throttle valve, a synchronization valve, and a balance valve. The electromagnetic directional valve, one-way throttle valve, synchronization valve, and balance valve are sequentially connected in the hydraulic branch of the hydraulic drive unit. The electromagnetic directional valve is connected to the main hydraulic pipeline, and the synchronization valve is connected to the two balance valves. The two balance valves are respectively connected to the left swing cylinder and the right swing cylinder, the left telescopic cylinder and the right telescopic cylinder, the left capping cylinder and the right capping cylinder through the hydraulic branch.

[0015] The aforementioned convenient and safe online blast furnace molten iron ladle covering device includes a manual pump, an electromagnetic shut-off valve, and an overflow valve in its hydraulic drive unit. The manual pump is installed above the oil tank, with its inlet connected to the oil tank and its outlet connected to the oil pump's outlet pipeline. The electromagnetic shut-off valve and overflow valve are respectively installed in the return oil pipeline of the main hydraulic pipeline, with the return oil outlet of the return oil pipeline opposite to the oil tank.

[0016] The beneficial effects of this utility model are:

[0017] The left and right lids of this invention are located on either side of the molten iron ladle. The left and right lids can be closed towards the center to cover the top surface of the ladle. Left and right lid supports are located on the brackets of the molten iron ladle transport trolley on both sides of the ladle, providing support for the lower ends of the left and right swing linkages. The left and right swing linkages can rotate left and right and up and down, raising and lowering the left and right lids. The left and right telescopic linkages can extend and retract, raising the position of the left and right lids. The left and right extension linkages... The cover connecting rod and the right cover connecting rod can drive the left and right ladle covers to rotate up and down, covering the molten iron ladle; the left and right swing cylinders are used to swing the left and right swing connecting rods; the left and right telescopic cylinders are used to extend and retract the left and right telescopic connecting rods; the left and right cover cylinders can drive the left and right cover connecting rods to rotate up and down, so that the left and right ladle covers cover the upper surface of the molten iron ladle; the hydraulic drive device is used to drive each hydraulic cylinder to complete the opening and closing of the left and right ladle covers.

[0018] This utility model has a reasonable structure and is easy to use. It can complete the opening and closing of the ladle cover below the swing iron trough in the blast furnace tapping area, so that the molten iron ladle can safely and reliably receive iron, reduce the heat loss of molten iron, protect the personal safety of operators, and greatly simplify the operation process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a diagram showing the molten iron ladle with its lid open.

[0021] Figure 3 This is a schematic diagram showing the closed state of the lid of the molten iron ladle;

[0022] Figure 4 This is a schematic diagram of the left swing linkage;

[0023] Figure 5 This is a structural diagram of the left telescopic linkage;

[0024] Figure 6 This is a structural diagram of a hydraulic drive device.

[0025] The following are the markings in the diagram: 1. Ladle of molten iron; 2. Transport trolley; 3. Left ladle cover; 4. Right ladle cover; 5. Left cover support; 6. Left swing linkage; 7. Left telescopic linkage; 8. Left cover linkage; 9. Left telescopic cylinder; 10. Left cover cylinder; 11. Right cover support; 12. Right swing linkage; 13. Right telescopic linkage; 14. Right cover linkage; 15. Right swing cylinder; 16. Right telescopic cylinder; 17. Right cover cylinder; 18. Left pull rod; 19. Right pull rod; 20. N-frame; 21. Hydraulic drive device; 22. Oil tank; 23. DC motor; 24. Oil pump; 25. Check valve; 26. Main hydraulic pipeline; 27. Hydraulic drive unit; 28. Hydraulic branch line; 29. ​​Solenoid directional valve; 30. One-way throttle valve; 31. Synchronization valve; 32. Balance valve; 33. Manual pump; 34. Solenoid shut-off valve; 35. Overflow valve; 36. Detailed Implementation

[0026] This utility model includes a cover, a cover moving mechanism, and a hydraulic drive device.

[0027] Figure 1 The ladle cover consists of a left ladle cover 3 and a right ladle cover 4, both of which are semi-circular steel ladle covers located on either side of the outlet above the molten iron ladle 1. Ladle cover moving mechanisms support and move the left and right ladle covers, which are fixed to the frames of the molten iron ladle transport trolleys 2 on both sides of the molten iron ladle 1. A hydraulic drive device 22 is used to drive the left ladle cover 3 and right ladle cover 4 to open and cover the molten iron ladle 1; the hydraulic drive device 22 is fixed to one end of the molten iron ladle transport trolley 2.

[0028] Figure 1 , 2As shown in Figure 3, the cover moving mechanism is divided into left and right parts, which move the left cover 3 and the right cover 4 respectively. The cover moving components of the left cover 3 include a left cover support 5, a left swing link 6, a left telescopic link 7, a left cover link 8, a left swing cylinder 9, a left telescopic cylinder 10, and a left cover cylinder 11; the cover moving components of the right cover 4 include a right cover support 12, a right swing link 13, a right telescopic link 14, a right cover link 15, a right swing cylinder 16, a right telescopic cylinder 17, and a right cover cylinder 18. The two parts have the same structure and are driven by a hydraulic drive device 22.

[0029] Figure 1 , 2 As shown in Figure 3, the left cover support 5 is fixed to the frame of the molten iron ladle transport trolley 2 on the left side of the molten iron ladle 1. The lower ends of the two left swing linkages 6 are connected to the upper ends of the left cover support 5, respectively. The two left swing linkages 6, the two left telescopic linkages 7, and the two left cover linkages 8 are connected in sequence, and the front ends of the two left cover linkages 8 are connected to the rear of the left cover 3, respectively. The two left swing cylinders 9, the two left telescopic cylinders 10, and the two left cover cylinders 11 are connected to the two left swing linkages 6, the two left telescopic linkages 7, and the two left cover linkages 8, respectively. Each cylinder is connected to a hydraulic drive device to drive the linkages to move.

[0030] Similarly, the right cover support 12 is fixed to the frame of the molten iron ladle transport trolley 2 on the right side of the molten iron ladle 1. The lower ends of the two right swing linkages 13 are connected to the upper ends of the right cover support 12, respectively. The two right swing linkages 13, the two right telescopic linkages 14, and the two right cover linkages 15 are connected in sequence, and the front ends of the two right cover linkages 15 are connected to the rear of the right cover 4, respectively. The two right swing cylinders 16, the two right telescopic cylinders 17, and the two right cover cylinders 18 are connected to the two right swing linkages 13, the two right telescopic linkages 14, and the two right cover linkages 15, respectively. Each cylinder is connected to a hydraulic drive device to drive the linkages to move.

[0031] Figure 1 , 2 As shown in Figure 3, the structure of the left cover support 5 is the same as that of the right cover support 12. The left cover support 5 consists of two pillars, which are located at the front and rear of the left side of the molten iron ladle 1, respectively. The lower ends of the two pillars are welded to the frame of the molten iron ladle transport trolley 2, and the upper ends of the two pillars have shaft holes. The rotating shafts are rotatably connected to the lower ends of the two left swing linkages 6 through the shaft holes.

[0032] Figure 1 , 2As shown in Figures 3 and 4, the structures of the two left swing links 6 are the same as those of the two right swing links 13. The two left swing links 6 are square tubes, with the inner hole at the front end of each tube serving as a sliding groove. The rear end of the left telescopic link 7 slides back and forth within the inner hole of the square tube, achieving the telescopic effect. The lower ends of the two left swing links 6 each have shaft holes through which a rotating shaft passes and is rotatably connected to the shaft holes at the upper ends of the two pillars of the left cover support 5. Connecting plates are welded to the lower front ends of the two left swing links 6, and two shaft holes are arranged on these connecting plates for connecting the left swing cylinder 9 and the left telescopic cylinder 10, respectively.

[0033] Figure 1 , 2 As shown in Figures 3 and 4, the two left swing cylinders 9 and the two right swing cylinders 16 have the same structure. The lower ends of the two left swing cylinders 9 are respectively connected to the two pillars of the left cover support 5, and the front ends of the push rods of the two left swing cylinders 9 are respectively connected to one shaft hole of the connecting plate at the front end of the two left swing connecting rods 6 by a rotating shaft. The other shaft hole of the connecting plate at the front end of the two left swing connecting rods 6 is connected to the rear end of the left telescopic cylinder 10 by a rotating shaft.

[0034] Figure 1 , 2 As shown in Figures 3 and 5, the structures of the two left telescopic links 7 are the same as those of the two right telescopic links 14. The two left telescopic links 7 are square tubes, and their upper ends are connected by a crossbar to form an N-shaped frame. The lower parts of the square tubes of the two left telescopic links 7 are inserted into the inner holes at the upper ends of the square tubes of the left swing links 6. The square tubes of the two left telescopic links 7 and the inner holes at the upper ends of the square tubes of the two left swing links 6 are in sliding fit, thus achieving the extension and retraction of the link length.

[0035] Figure 1 , 2 As shown in Figures 3 and 5, the extension and retraction of the two left telescopic links 7 and the two right telescopic links 14 are accomplished by the two left telescopic cylinders 10 and the two right telescopic cylinders 17, respectively. The two left telescopic cylinders 10 and the two right telescopic cylinders 17 have the same structure. The upper parts of the two left telescopic links 7 are connected to the upper ends of the push rods of the two left telescopic cylinders 10 via rotating shafts, and the lower ends of the two left telescopic cylinders 10 are connected to the other shaft holes of the connecting plates at the front ends of the two left swing links 6 via rotating shafts. Since the lower ends of the two left telescopic cylinders 10 are fixedly connected to the two left swing links 6, when the push rods of the two left telescopic cylinders 10 extend and retract, they will drive the lower parts of the two left telescopic links 7 to move back and forth in the inner holes at the upper ends of the two left swing links 6, thus completing the extension and retraction action.

[0036] Figure 1 , 2As shown in Figures 3 and 5, the structures of the two left cover connecting rods 8 are the same as those of the two right cover connecting rods 15. The two left cover connecting rods 8 and the two right cover connecting rods 15 are used to drive the left ladle cover 3 and the right ladle cover 4 to open upwards and cover the top surface of the molten iron ladle 1 downwards, respectively. Two parallel rotating shaft plates are fixed on the crossbar connected to the upper end of the two left telescopic connecting rods 7. The rotating shaft plates have shaft holes in the center for connecting the two left cover connecting rods 8. The two left cover connecting rods 8 are long rods. The front ends of the two left cover connecting rods 8 are welded to the rear ends of the left ladle cover 3 on both sides, respectively. The rear ends of the two left cover connecting rods 8 are rotatably connected to the shaft holes of the rotating shaft plates on the crossbar between the two left telescopic connecting rods 7 through rotating shafts.

[0037] Figure 1 , 2 As shown in Figures 3 and 5, the opening and closing actions of the two left cover connecting rods 8 and the two right cover connecting rods 15 are accomplished by the two left cover cylinders 11, the two right cover cylinders 18, the two left pull rods 19, and the two right pull rods 20. The two left cover cylinders 11 and the two right cover cylinders 18 have the same structure, as do the two left pull rods 19 and the two right pull rods 20.

[0038] Two left-cap-adding cylinders 11 are fixed to two left-telescopic connecting rods 7. N-shaped frames 21 are welded to the outer sides of the two left-telescopic connecting rods 7. The top surface of the N-shaped frames 21 has shaft holes. The two left-cap-adding cylinders 11 are inserted into the N-shaped frames 21, and the two left-cap-adding cylinders 11 are connected to the shaft holes of the N-shaped frames 21 via rotating shafts. The upper ends of the push rods of the two left-cap-adding cylinders 11 are connected to both sides of the left cover 3 via two left pull rods 19 via rotating shafts. When the push rods of the two left-cap-adding cylinders 11 extend or retract, the left cover 3 can be pulled upwards or downwards by the left pull rods 19.

[0039] Figure 1 , 6 The hydraulic drive unit 22 includes an oil tank 23, a DC motor 24, an oil pump 25, a check valve 26, a main hydraulic line 27, and three hydraulic drive units 28. The oil tank 23, DC motor 24, oil pump 25, and check valve 26 are respectively installed at one end of the frame of the molten iron ladle transport trolley 2. The DC motor 24 is connected to the oil pump 25, the oil inlet of the oil pump 25 is connected to the oil tank 23, and the oil outlet of the oil pump 25 is connected to the three hydraulic drive units 28 respectively through the main hydraulic line 27. The check valve 26 is installed in the main hydraulic line 27. The three hydraulic drive units 28 have the same structure and are respectively connected to two left swing cylinders 9 and two right swing cylinders 16, two left telescopic cylinders 10 and two right telescopic cylinders 17, two left capping cylinders 11, and two right capping cylinders 18.

[0040] The diagram only shows one of the following cylinders: left swing cylinder 9, right swing cylinder 16, left telescopic cylinder 10, right telescopic cylinder 17, left cover cylinder 11, and right cover cylinder 18.

[0041] Figure 6 The display shows that the three hydraulic drive units 28 each include a hydraulic branch 29, a solenoid directional valve 30, a one-way throttle valve 31, a synchronization valve 32, and a balance valve 33. The solenoid directional valve 30, the one-way throttle valve 31, the synchronization valve 32, and the balance valve 33 are sequentially connected in the hydraulic branch 29 of the hydraulic drive unit 28. The solenoid directional valve 30 is connected to the main hydraulic line 27, and the synchronization valve 32 is connected to the two balance valves 33. The two balance valves 33 are respectively connected to the left swing cylinder 9 and the right swing cylinder 16, the left telescopic cylinder 10 and the right telescopic cylinder 17, the left capping cylinder 11 and the right capping cylinder 18 through the hydraulic branch 29.

[0042] Figure 6 The display shows that the hydraulic drive unit 22 also includes a manual pump 34, a solenoid shut-off valve 35, and a relief valve 36. The manual pump 34 is installed above the oil tank 23, with its inlet connected to the oil tank 23 and its outlet connected to the outlet line of the oil pump 25. The solenoid shut-off valve 35 and the relief valve 36 are respectively installed in the return lines of the main hydraulic line 27, with the return port of the return line opposite to the oil tank 23.

[0043] The working process of this utility model is as follows:

[0044] When the left ladle cover 3 and the right ladle cover 4 are in the open state, the push rods of the left swing cylinder 9 and the right swing cylinder 16 are retracted, and the left swing connecting rod 6 and the right swing connecting rod 13 tilt downwards to both sides, so that the left ladle cover 3 and the right ladle cover 4 move to both sides of the molten iron ladle 1 and open.

[0045] When it is necessary to close the left ladle cover 3 and the right ladle cover 4, the push rods of the left swing cylinder 9 and the right swing cylinder 16 extend, causing the left swing connecting rod 6 and the right swing connecting rod 13 to lift up and close in the middle. At the same time, the push rods of the left telescopic cylinder 10 and the right telescopic cylinder 17 extend, causing the length of the left telescopic connecting rod 7 and the right telescopic connecting rod 14 to increase, thereby causing the left cover connecting rod 8, the right cover connecting rod 15, the left ladle cover 3 and the right ladle cover 4 to move upward to above the top surface of the molten iron ladle 1.

[0046] After the left swing link 6 and the right swing link 13 move to the position of the left ladle cover 3 and the right ladle cover 4 on the top surface of the molten iron ladle 1, the push rods of the left telescopic cylinder 10 and the right telescopic cylinder 17 retract, causing the left telescopic link 7 and the right telescopic link 14 to shorten, so that the left cover link 8, the right cover link 15, the left ladle cover 3 and the right ladle cover 4 move downward.

[0047] When the rear ends of the left ladle cover 3 and the right ladle cover 4 move to the horizontal position on the top surface of the molten iron ladle 1, the push rods of the left cover cylinder 11 and the right cover cylinder 18 retract, and the left pull rod 19 and the right pull rod 20 respectively drive the front ends of the left ladle cover 3 and the right ladle cover 4 to rotate downwards. Finally, the left ladle cover 3 and the right ladle cover 4 cover the top surface of the molten iron ladle 1.

[0048] The steps of opening the left bag flap 3 and the right bag flap 4 are reversed.

[0049] An embodiment of this utility model is as follows:

[0050] The left flap 3 and the right flap 4 are 4470mm long, 2000mm wide, and 300mm thick;

[0051] The cross-sectional width of the support column of the left cover support 5 and the right cover support 12 is 160mm and the height is 1230mm;

[0052] The width of the square tubes of the left swing link 6 and the right swing link 13 is 160mm and the length is 1470mm;

[0053] The left telescopic link 7 and the right telescopic link 14 have a square tube width of 160mm and a length of 3000mm, and the crossbar 20 has a length of 830mm.

[0054] The width of the square tubes of the left cover connecting rod 8 and the right cover connecting rod 15 is 160mm and the length is 900mm;

[0055] The model of the left swing cylinder 9, the left telescopic cylinder 10, the left cover cylinder 11, the right swing cylinder 16, the right telescopic cylinder 17, and the right cover cylinder 18 is ZQ125 / 90×700;

[0056] The lengths of the left pull rod 19 and the right pull rod 20 are 830mm;

[0057] The length of fuel tank 23 is 500mm, the width is 500mm, and the height is 300mm;

[0058] The model of DC motor 24 is: ZYS-450-2B

[0059] The model of oil pump 25 is: A4VSO125DR

[0060] The model number of the one-way valve 26 is: SR30KE05

[0061] The model number of the solenoid directional valve 30 is: 4WEH16J

[0062] The model number of the one-way throttle valve 31 is: Z2FS16-

[0063] The model number of the synchronizing valve 32 is: 3FL-L63H

[0064] The model number of the balance valve 33 is: FD32PA10

[0065] The model number of the manual pump 34 is: SB-60-3

[0066] The model number of the electromagnetic shut-off valve 35 is: 4WEH16J7EB

[0067] The model number of the overflow valve 36 is DBDS10K10B.

Claims

1. A convenient and safe online capping device for blast furnace molten iron ladles, characterized in that: It includes a left cover (3), a right cover (4), a left cover support (5), a left swing link (6), a left telescopic link (7), a left cover link (8), a left swing cylinder (9), a left telescopic cylinder (10), a left cover cylinder (11), a right cover support (12), a right swing link (13), a right telescopic link (14), a right cover link (15), a right swing cylinder (16), a right telescopic cylinder (17), a right cover cylinder (18), a left pull rod (19), a right pull rod (20), and hydraulic drive. The device (22) has a left ladle cover (3) and a right ladle cover (4) that are semi-circular steel ladle covers. The left ladle cover (3) and the right ladle cover (4) are located on both sides of the outlet of the molten iron ladle (1). The left cover support (5) and the right cover support (12) are fixed on the frame of the molten iron ladle transport trolley (2) on both sides of the molten iron ladle (1). The lower ends of the two left swing links (6) and the two right swing links (13) are connected to the upper ends of the left cover support (5) and the right cover support (12) respectively. One left telescopic link (7) and two left cover links (8) are connected in sequence. Two right swing links (13), two right telescopic links (14), and two right cover links (15) are connected in sequence. The front ends of the two left cover links (8) and the two right cover links (15) are connected to the rear ends of the left cover (3) and the right cover (4), respectively. Two left swing cylinders (9), two left telescopic cylinders (10), and two left cover cylinders (11) are connected to the two left swing links (6), the two left telescopic links (7), and the two right cover links (8). The left cover connecting rod (8) and the two left pull rods (19) are connected. The two right swing cylinders (16), the two right telescopic cylinders (17), and the two right cover cylinders (18) are connected to the two right swing connecting rods (13), the two right telescopic connecting rods (14), the two right cover connecting rods (15), and the two right pull rods (20) respectively. The two left pull rods (19) and the two right pull rods (20) are connected to the two sides of the left cover (3) and the right cover (4) respectively. Each cylinder is connected to the hydraulic drive device (22) respectively.

2. The user-friendly and safe online capping device for the ladle of the blast furnace, according to claim 1, characterized in that: The structure of the left cover support (5) is the same as that of the right cover support (12). The left cover support (5) consists of two pillars, which are located in front and behind the left side of the molten iron ladle (1). The lower ends of the two pillars are welded to the frame of the molten iron ladle transport trolley (2), and the upper ends of the two pillars are rotatably connected to the lower ends of the two left swing linkages (6) by a rotating shaft.

3. The convenient and safe online capping device for blast furnace molten iron ladles according to claim 2, characterized in that: The structure of the two left swing links (6) is the same as that of the two right swing links (13). The two left swing links (6) are square tubes. The lower ends of the two left swing links (6) are rotatably connected to the upper ends of the two pillars of the left cover support (5) by a rotating shaft. The lower front ends of the two left swing links (6) are welded with connecting plates. Two shaft holes are arranged on the connecting plates. The lower ends of the two left swing cylinders (9) are connected to the two pillars of the left cover support (5) by a rotating shaft. The front ends of the push rods of the two left swing cylinders (9) are connected to one shaft hole of the connecting plate at the front end of the two left swing links (6) by a rotating shaft.

4. The user-friendly and safe online capping device for the ladle of the blast furnace, as claimed in claim 3, wherein: The structure of the two left telescopic connecting rods (7) is the same as that of the two right telescopic connecting rods (14). The two left telescopic connecting rods (7) are square tubes. The upper ends of the two left telescopic connecting rods (7) are connected by crossbars to form an N-shaped frame. The lower part of the square tubes of the two left telescopic connecting rods (7) is inserted into the inner hole of the upper end of the square tube of the left swing connecting rod (6). The square tubes of the two left telescopic connecting rods (7) are in sliding fit with the inner hole of the upper end of the square tube of the two left swing connecting rods (6). The upper part of the two left telescopic connecting rods (7) is connected to the upper end of the push rod of the two left telescopic cylinders (10) through a rotating shaft. The lower end of the two left telescopic cylinders (10) is connected to the other shaft hole of the connecting plate at the front end of the two left swing connecting rods (6) through a rotating shaft.

5. The user-friendly and safe online capping of molten iron ladle of blast furnace as claimed in claim 4 wherein: The structure of the two left cover connecting rods (8) is the same as that of the two right cover connecting rods (15). Two parallel rotating shaft plates are fixed on the crossbar connected to the upper end of the two left telescopic connecting rods (7). The rotating shaft plates have shaft holes in the center. The two left cover connecting rods (8) are long rods. The front ends of the two left cover connecting rods (8) are welded to the two rear ends of the left cover (3) respectively. The rear ends of the two left cover connecting rods (8) are rotatably connected to the shaft holes of the rotating shaft plates on the crossbar between the two left telescopic connecting rods (7) through the rotating shaft.

6. The user-friendly and safe online capping of blast furnace ladle device as claimed in claim 5 wherein: The structure of the two left cover cylinders (11) is the same as that of the two right cover cylinders (18). The outer sides of the two left telescopic connecting rods (7) are respectively fixedly welded with N-shaped frames (21). There are shaft holes on the top surface of the N-shaped frames (21). The two left cover cylinders (11) are inserted into the N-shaped frames (21). The two left cover cylinders (11) are connected to the shaft holes of the N-shaped frames (21) through rotating shafts. The upper ends of the push rods of the two left cover cylinders (11) are respectively connected to the two sides of the left cover (3) through rotating shafts via the left pull rods (19).

7. The user-friendly and safe online capping of blast furnace ladle device as claimed in claim 6 wherein: The hydraulic drive device (22) includes an oil tank (23), a DC motor (24), an oil pump (25), a check valve (26), a main hydraulic line (27), and three hydraulic drive units (28). The oil tank (23), DC motor (24), oil pump (25), and check valve (26) are respectively installed at one end of the frame of the molten iron ladle transport trolley (2). The DC motor (24) is connected to the oil pump (25), and the oil inlet of the oil pump (25) is connected to the oil tank (23). 5) The oil outlet is connected to three hydraulic drive units (28) through the main hydraulic pipeline (27). The check valve (26) is installed in the main hydraulic pipeline (27). The three hydraulic drive units (28) have the same structure. The three hydraulic drive units (28) are connected to two left swing cylinders (9) and two right swing cylinders (16), two left telescopic cylinders (10) and two right telescopic cylinders (17), two left cover cylinders (11) and two right cover cylinders (18) respectively.

8. The user-friendly and safe online capping device for the ladle of the blast furnace, according to claim 7, characterized in that: The three hydraulic drive units (28) include a hydraulic branch (29), an electromagnetic directional valve (30), a one-way throttle valve (31), a synchronization valve (32), and a balance valve (33). The electromagnetic directional valve (30), the one-way throttle valve (31), the synchronization valve (32), and the balance valve (33) are sequentially connected in the hydraulic branch (29) of the hydraulic drive unit (28). The electromagnetic directional valve (30) is connected to the main hydraulic pipeline (27). The synchronization valve (32) is connected to the two balance valves (33). The two balance valves (33) are connected to the left swing cylinder (9) and the right swing cylinder (16), the left telescopic cylinder (10) and the right telescopic cylinder (17), the left cover cylinder (11), and the right cover cylinder (18) through the hydraulic branch (29).

9. The user-friendly and safe online capping of blast furnace ladle device as claimed in claim 8 wherein: The hydraulic drive device (22) also includes a manual pump (34), an electromagnetic shut-off valve (35), and an overflow valve (36). The manual pump (34) is installed above the oil tank (23). The oil inlet of the manual pump (34) is connected to the oil tank (23), and the oil outlet of the manual pump (34) is connected to the oil outlet pipeline of the oil pump (25). The electromagnetic shut-off valve (35) and the overflow valve (36) are respectively installed in the return oil pipeline of the main hydraulic pipeline (27). The return oil outlet of the return oil pipeline is opposite to the oil tank (23).

Images