Special lifting appliance for replacing tuyere sleeve of blast furnace

Abstract

The utility model relates to a special lifting appliance for replacing a tuyere sleeve of a blast furnace, which relates to the technical field of tuyere sleeve lifting and comprises a frame, a group of lifting lugs are arranged on the frame in a sliding manner, lifting chains are arranged at the bottoms of the lifting lugs, lifting rods are detachably arranged among the lifting chains, and guide components are arranged between the lifting lugs and the frame. The guide assembly enables the guide lugs to move along the frame, a lifting beam is fixedly arranged between the lifting lugs, a lifting assembly is arranged between the lifting beam and the frame, and the lifting assembly is used for enabling the lifting beam to move. The tuyere sleeve has the effect of reducing falling of the tuyere sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of tuyere sleeve hoisting, in particular to a special hoisting device for replacing a blast furnace tuyere sleeve. Background Art

[0002] The blast furnace tuyere is the only way to transport hot air and pulverized coal to the iron-making blast furnace. The tuyere sleeve is an important component used for cooling in the blast furnace tuyere. When the tuyere sleeve is damaged, it is necessary to replace it in time to prevent a large amount of cooling water from entering the blast furnace and causing serious losses. During the replacement of the tuyere sleeve, it is necessary to use lifting equipment to move the tuyere sleeve.

[0003] In the related art, a Chinese patent with authorization announcement number CN216945810U provides a blast furnace tuyere small sleeve hoisting device, which includes a base, a second crossbar is arranged on the base, a limit stopper is fixedly arranged at one end of the second crossbar, a vertical pole is fixedly arranged at the other end of the second crossbar, a first crossbar is fixedly arranged at the top of the vertical pole, and a lifting lug is fixedly arranged on the first crossbar. The second crossbar is extended into the tuyere small sleeve, so that the limit stopper limits the tuyere small sleeve, and then connected to the lifting lug through a lifting device, and the tuyere sleeve is transported by hoisting.

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in the technology: when the air outlet sleeve shakes during the hoisting process, the air outlet sleeve and the limit block may fail to be connected. Since the air outlet sleeve is a conical structure with one end larger and the other end smaller, the air outlet sleeve may tilt during the hoisting process, so that one end of the air outlet sleeve is facing downward. If the air outlet sleeve and the limit block fail to be connected, the air outlet sleeve will fall off the second cross bar, which may easily cause damage to the air outlet sleeve on the one hand and injure the staff on the other hand. Utility Model Content

[0005] In order to reduce the situation where the tuyere sleeve falls off, the present application provides a special lifting device for replacing the tuyere sleeve of a blast furnace.

[0006] The present application provides a special lifting device for replacing a blast furnace tuyere sleeve, which adopts the following technical solution:

[0007] A special lifting device for replacing a blast furnace tuyere sleeve comprises a frame, a group of lifting ears are slidably arranged on the frame, a lifting chain is arranged at the bottom of the lifting ears, a lifting rod is detachably arranged between the lifting chains, a guide assembly is arranged between the lifting ears and the frame, the guide assembly enables the guide ears to move along the frame, a lifting beam is fixedly arranged between the lifting ears, a lifting assembly is arranged between the lifting beam and the frame, and the lifting assembly is used to move the lifting beam.

[0008] By adopting the above technical scheme, when the air outlet sleeve is hoisted, the lifting rod is inserted into the air outlet sleeve, and then the lifting chain is connected to the lifting rod. Finally, the operator uses the lifting assembly to drive the lifting beam to move, the lifting beam movement drives the lifting ear to move, the lifting ear movement drives the lifting chain to move, the lifting chain movement drives the lifting rod to move, and the lifting rod movement drives the air outlet sleeve to move. During the movement of the lifting ring, the lifting ring moves along the frame through the guide assembly, so that the lifting beam is not easy to tilt, and then the bottom end of the lifting chain is on the same horizontal line, so that the lifting rod between the lifting chains is not easy to tilt, and then the air outlet sleeve is not easy to tilt during the lifting process. When the air outlet sleeve and the lifting rod fail to be connected, the air outlet sleeve is not easy to fall off the lifting rod due to the horizontal setting of the opening of the air outlet sleeve, thereby reducing the damage to the air outlet sleeve and the injury to the staff.

[0009] Preferably, the guide assembly includes a guide rod and a guide sleeve, the guide sleeve is fixedly arranged on the back side of the lifting ear, the guide sleeve is sleeved on the guide rod, the guide rod is arranged along the height direction of the frame, and the guide rod is fixedly connected to the frame.

[0010] By adopting the above technical solution, when the lifting beam drives the lifting ear to move, the lifting ear drives the guide sleeve to move along the guide rod, thereby realizing the movement of the lifting ear along the height direction of the frame. The guide sleeves restrict the lifting ear and the lifting beam, making it difficult for the lifting beam to tilt, thereby keeping the lifting ears at the same height.

[0011] Preferably, the lifting assembly comprises a lifting rope, the lifting rope is connected to the lifting beam, one end of the lifting rope is fixedly connected to the frame, and a pull ring is fixedly provided on the other end of the lifting rope.

[0012] By adopting the above technical solution, when the operator pulls the pull ring to drive the lifting rope to move, the lifting rope drives the lifting beam to move, thereby achieving the effect of lifting the lifting beam.

[0013] Preferably, the lifting assembly also includes a lifting wheel and a lifting pulley, the lifting pulley is rotatably set on the frame, the lifting wheel is rotatably set on the lifting beam, the lifting rope is wound around the lifting wheel and the lifting pulley, and the lifting rope is connected to the lifting pulley at one end away from the pull ring.

[0014] By adopting the above technical scheme, when the operator pulls the pull ring to drive the lifting rope to move, the lifting rope moves along the lifting pulley, the movement of the lifting rope drives the lifting moving wheel, the movement of the lifting moving wheel drives the lifting beam to move, the lifting rope, the lifting moving wheel and the lifting pulley form a movable pulley group, thereby achieving a labor-saving effect.

[0015] Preferably, a crossbeam is fixedly provided on the frame, a through hole is provided on the crossbeam, the lifting rope is passed through the through hole, and the crossbeam is used to abut against the pull ring.

[0016] By adopting the above technical solution, when the operator does not apply external force to the traction rope, the lifting beam naturally falls, and the falling of the lifting beam drives the traction rope to move until the pull ring abuts against the crossbeam.

[0017] Preferably, the lifting rod comprises a smooth rod and a group of threaded rods, the opposite surfaces of the threaded rods are fixedly connected to the end walls of the smooth rods, connecting grooves are provided on the back surfaces of the threaded rods, connecting rods are threadedly connected to the connecting grooves, and lifting rings are fixedly arranged on the back surfaces of the connecting rods, and the lifting rings are fixedly connected to the lifting chains.

[0018] By adopting the above technical solution, when the lifting rod composed of a smooth rod and a group of threaded rods is inserted into the air outlet sleeve, the connecting rod on the lifting ring sleeve is threadedly connected with the connecting groove on the threaded rod, and then the lifting chain is connected to the two ends of the lifting rod through the lifting ring sleeve, thereby achieving the effect of detachable connection between the lifting chain and the lifting rod.

[0019] Preferably, a large ring sleeve is threadedly connected to one of the threaded rods, and the large ring sleeve is used to abut against the large end of the tuyere sleeve, and a small ring sleeve is threadedly connected to the other threaded rod, and the small ring sleeve is used to abut against the small end of the tuyere sleeve.

[0020] By adopting the above technical solution, after the lifting rod is inserted into the tuyere sleeve, the large ring sleeve and the small ring sleeve are installed on the threaded rod, so that the tuyere sleeve abuts between the large ring sleeve and the small ring sleeve, thereby reducing the tuyere sleeve from slipping off the lifting rod.

[0021] Preferably, a plurality of universal wheels are arranged at the bottom of the frame.

[0022] By adopting the above technical solution, the universal wheel enables the frame to form rolling friction with the ground, making it easier for the frame to drive the air outlet sleeve to move.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the frame, lifting lugs, lifting chain, lifting rod, guide assembly, lifting beam and lifting assembly, the tuyere sleeve is not easy to fall from the lifting rod, thus reducing the damage to the tuyere sleeve and the injury to the staff;

[0025] 2. By setting the guide rod and the guide sleeve, the lifting lug can be moved along the height direction of the frame. The guide sleeves restrict the lifting lug and the lifting beam, making it difficult for the lifting beam to tilt, so that the lifting lugs are at the same height;

[0026] 3. By setting a large ring sleeve and a small ring sleeve, the tuyere sleeve is abutted between the large ring sleeve and the small ring sleeve to reduce the situation of the tuyere sleeve slipping off the lifting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a special hanger for replacing a blast furnace tuyere sleeve in an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of a special hanger for replacing a blast furnace tuyere sleeve in an embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view showing the connection relationship between the crossbeam and the lifting rope in the embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. Frame; 11. Universal wheel; 2. Lifting ear; 21. Lifting chain; 3. Lifting rod; 31. Smooth rod; 32. Threaded rod; 4. Guide assembly; 41. Guide rod; 42. Guide sleeve; 5. Lifting beam; 6. Lifting assembly; 61. Lifting rope; 62. Lifting moving wheel; 63. Lifting pulley; 7. Crossbeam; 71. Through hole; 72. Pull ring; 8. Lifting ring sleeve; 81. Connecting rod; 82. Connecting groove; 9. Air outlet sleeve; 91. Large ring sleeve; 92. Small ring sleeve. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses a special lifting device for replacing a blast furnace tuyere sleeve. Figure 1 and Figure 2, including a frame 1, and a plurality of universal wheels 11 are installed at the bottom of the frame 1. The universal wheels 11 enable the frame 1 to form rolling friction with the ground, so that the frame 1 can drive the air outlet sleeve 9 to move. A group of lifting ears 2 are symmetrically installed on the frame 1, and a guide assembly 4 is arranged between the lifting ears 2 and the frame 1, and the guide assembly 4 enables the guide ears to slide along the height direction of the frame 1. A lifting chain 21 is hung at the bottom of the lifting ears 2, and a lifting rod 3 is detachably arranged between the lifting chains 21. A lifting beam 5 is welded between the lifting ears 2, and a lifting assembly 6 is installed between the lifting beam 5 and the frame 1, and the lifting assembly 6 is used to lift and lower the lifting beam 5 along the height direction of the frame 1. When lifting the air outlet sleeve 9, the lifting rod 3 is inserted into the air outlet sleeve 9, and then the lifting chain 21 is connected to the lifting rod 3, and finally the operator uses the lifting assembly 6 to drive the lifting beam 5 to move. The movement of the lifting beam 5 drives the lifting ear 2 to move, the movement of the lifting ear 2 drives the lifting chain 21 to move, the movement of the lifting chain 21 drives the lifting rod 3 to move, and the movement of the lifting rod 3 drives the air outlet sleeve 9 to move. During the movement of the lifting ring, the lifting ring moves along the frame 1 through the guide assembly 4, so that the lifting beam 5 is not easy to tilt. In addition, the bottom ends of the lifting chains 21 are on the same horizontal line, so that the lifting rod 3 between the lifting chains 21 is not easy to tilt. During the lifting process of the air outlet sleeve 9, the air outlet sleeve 9 is not easy to tilt. When the air outlet sleeve 9 and the lifting rod 3 fail to be connected, the air outlet sleeve 9 is not easy to fall from the lifting rod 3 because the opening of the air outlet sleeve 9 is set horizontally, which reduces the damage of the air outlet sleeve 9 and the injury to the staff.

[0033] In order to prevent the lifting beam 5 from tilting, refer to Figure 1 and Figure 2 The guide assembly 4 includes a guide rod 41 and a guide sleeve 42. The guide rod 41 is arranged along the height direction of the frame 1, and the guide rod 41 is welded to the frame 1. The guide sleeve 42 is welded on the back side of the lifting ear 2, and the guide sleeve 42 is sleeved on the guide rod 41. When the lifting beam 5 drives the lifting ear 2 to move, the lifting ear 2 drives the guide sleeve 42 to move along the guide rod 41, so as to achieve the effect of moving the lifting ear 2 along the height direction of the frame 1. The guide sleeve 42 is restricted in the horizontal direction by the guide rod 41, and forms a limit for the lifting ear 2 and the lifting beam 5, so that the lifting beam 5 is not easy to tilt, and the lifting ear 2 is at the same height.

[0034] In order to achieve the effect of lifting the lifting beam 5, refer to Figures 1 to 3The lifting assembly 6 includes a lifting rope 61, a lifting wheel 62 and a lifting pulley 63. The lifting pulley 63 is rotatably arranged on the frame 1, and the lifting wheel 62 is rotatably arranged on the lifting beam 5, and the lifting pulley 63 and the lifting wheel 62 are arranged relative to each other. The lifting rope 61 is wound around the lifting wheel 62 and the lifting pulley 63, one end of the lifting rope 61 is hung with the lifting pulley 63, and a pull ring 72 is installed on the other end of the lifting rope 61. A crossbeam 7 is installed on the frame 1, and a through hole 71 is provided on the crossbeam 7. The lifting rope 61 is inserted into the through hole 71, and the crossbeam 7 is used to abut against the pull ring 72. When the operator pulls the pull ring 72 to drive the lifting rope 61 to move, the lifting rope 61 moves along the lifting pulley 63, the movement of the lifting rope 61 drives the lifting wheel 62, and the movement of the lifting wheel 62 drives the lifting beam 5 to move, so as to achieve the effect of lifting the lifting beam 5. At the same time, the lifting rope 61, the lifting wheel 62 and the lifting pulley 63 form a movable pulley group to achieve a labor-saving effect. When the operator does not apply external force to the traction rope, the lifting beam 5 falls naturally, and the falling of the lifting beam 5 drives the traction rope to move until the pull ring 72 abuts against the crossbeam 7. There is a certain space between the lifting beam 5 and the bottom of the frame 1, which can reduce the situation that the lifting beam 5 falls and hits the bottom of the frame 1, and reduce the situation that the lifting beam 5 falls and injures people.

[0035] In order to reduce the possibility of the air inlet sleeve 9 sliding off the lifting rod 3, refer to Figure 1 and Figure 2 The lifting rod 3 includes a smooth rod 31 and a group of threaded rods 32, and the opposite surface of the threaded rods 32 is integrally formed with the end wall of the smooth rod 31. A large ring sleeve 91 is threadedly connected to one of the threaded rods 32, and the large ring sleeve 91 is used to abut against the large end of the air outlet sleeve 9; a small ring sleeve 92 is threadedly connected to the other threaded rod 32, and the small ring sleeve 92 is used to abut against the small end of the air outlet sleeve 9. After the lifting rod 3 is inserted into the air outlet sleeve 9, the large ring sleeve 91 and the small ring sleeve 92 are installed on the threaded rod 32, so that the air outlet sleeve 9 abuts between the large ring sleeve 91 and the small ring sleeve 92, thereby reducing the air outlet sleeve 9 from slipping off the lifting rod 3.

[0036] In order to make the lifting chain 21 detachably connected to the lifting rod 3, refer to Figure 1 and Figure 2 , a connecting groove 82 is provided on the back side of the threaded rod 32, and the connecting groove 82 is threadedly connected to the connecting rod 81. A lifting ring sleeve 8 is installed on the back side of the connecting rod 81, and the lifting ring sleeve 8 is welded to the lifting chain 21. After the lifting rod 3 composed of a smooth rod 31 and a group of threaded rods 32 is inserted into the air inlet sleeve 9, the connecting rod 81 on the lifting ring sleeve 8 is threadedly connected to the connecting groove 82 on the threaded rod 32, and then the lifting chain 21 is connected to both ends of the lifting rod 3 through the lifting ring sleeve 8, so as to achieve the effect of detachable connection between the lifting chain 21 and the lifting rod 3.

[0037] The implementation principle of a special lifting device for replacing a blast furnace tuyere sleeve 9 in the embodiment of the present application is as follows: when lifting the tuyere sleeve 9, first insert the lifting rod 3 into the tuyere sleeve 9, then install the large ring sleeve 91 and the small ring sleeve 92 on the threaded rod 32, so that the tuyere sleeve 9 abuts between the large ring sleeve 91 and the small ring sleeve 92. Then, the connecting rod 81 on the lifting ring sleeve 8 is threadedly connected with the connecting groove 82 on the threaded rod 32, so that the lifting chain 21 is connected to both ends of the lifting rod 3 through the lifting ring sleeve 8. Finally, when the operator pulls the pull ring 72 to drive the lifting rope 61 to move, the lifting rope 61 moves along the lifting pulley 63, the lifting rope 61 moves to drive the lifting wheel 62, and the lifting wheel 62 moves to drive the lifting beam 5. The movement of the lifting beam 5 drives the lifting ear 2 to move, the movement of the lifting ear 2 drives the lifting chain 21 to move, the movement of the lifting chain 21 drives the lifting rod 3 to move, and the movement of the lifting rod 3 drives the tuyere sleeve 9 to move. During the movement of the lifting ring, the lifting ring moves along the guide rod 41 through the guide sleeve 42, so that the lifting beam 5 is not easy to tilt. In addition, the bottom ends of the lifting chains 21 are on the same horizontal line, so that the lifting rods 3 between the lifting chains 21 are not easy to tilt. During the lifting process, the tuyere sleeve 9 is not easy to tilt. When the tuyere sleeve 9 and the lifting rod 3 fail to be connected, on the one hand, the opening of the tuyere sleeve 9 is set horizontally, and on the other hand, the tuyere sleeve 9 is abutted between the large ring sleeve 91 and the small ring sleeve 92, so the tuyere sleeve 9 is not easy to fall from the lifting rod 3, reducing the damage of the tuyere sleeve 9 and the injury to the staff.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special lifting device for replacing a blast furnace tuyere sleeve, comprising a frame (1), a group of lifting ears (2) being slidably arranged on the frame (1), a lifting chain (21) being arranged at the bottom of the lifting ears (2), a lifting rod (3) being detachably arranged between the lifting chains (21), and characterized in that: A guide assembly (4) is arranged between the lifting ears (2) and the frame (1), and the guide assembly (4) enables the guide ears to move along the frame (1). A lifting beam (5) is fixedly arranged between the lifting ears (2), and a lifting assembly (6) is arranged between the lifting beam (5) and the frame (1), and the lifting assembly (6) is used to move the lifting beam (5).

2. A special lifting device for replacing blast furnace tuyere sleeve according to claim 1, characterized in that: The guide assembly (4) comprises a guide rod (41) and a guide sleeve (42); the guide sleeve (42) is fixedly arranged on the back side of the lifting ear (2); the guide sleeve (42) is sleeved on the guide rod (41); the guide rod (41) is arranged along the height direction of the frame (1); and the guide rod (41) is fixedly connected to the frame (1).

3. A special lifting device for replacing blast furnace tuyere sleeve according to claim 1, characterized in that: The lifting assembly (6) comprises a lifting rope (61), wherein the lifting rope (61) is connected to the lifting beam (5), one end of the lifting rope (61) is fixedly connected to the frame (1), and a pull ring (72) is fixedly provided on the other end of the lifting rope (61).

4. A special lifting device for replacing blast furnace tuyere sleeve according to claim 3, characterized in that: The lifting assembly (6) also includes a lifting wheel (62) and a lifting pulley (63), wherein the lifting pulley (63) is rotatably mounted on the frame (1), and the lifting wheel (62) is rotatably mounted on the lifting beam (5). The lifting rope (61) is wound around the lifting wheel (62) and the lifting pulley (63), and the lifting rope (61) is connected to the lifting pulley (63) at one end away from the pull ring (72).

5. The special lifting device for replacing blast furnace tuyere sleeve according to claim 3, characterized in that: A crossbeam (7) is fixedly arranged on the frame (1), a through hole (71) is provided on the crossbeam (7), the lifting rope (61) is passed through the through hole (71), and the crossbeam (7) is used to abut against a pull ring (72).

6. The special lifting device for replacing blast furnace tuyere sleeve according to claim 1, characterized in that: The lifting rod (3) comprises a smooth rod (31) and a group of threaded rods (32), the opposite surface of the threaded rod (32) is fixedly connected to the end wall of the smooth rod (31), a connecting groove (82) is provided on the opposite back surface of the threaded rod (32), the inner thread of the connecting groove (82) is connected to the connecting rod (81), a lifting ring sleeve (8) is fixedly arranged on the opposite back surface of the connecting rod (81), and the lifting ring sleeve (8) is fixedly connected to the lifting chain (21).

7. A special lifting device for replacing blast furnace tuyere sleeve according to claim 6, characterized in that: A large ring sleeve (91) is threadedly connected to one of the threaded rods (32), and the large ring sleeve (91) is used to abut against the large end of the air outlet sleeve (9). A small ring sleeve (92) is threadedly connected to the other threaded rod (32), and the small ring sleeve (92) is used to abut against the small end of the air outlet sleeve (9).

8. The special lifting device for replacing blast furnace tuyere sleeve according to claim 1, characterized in that: A plurality of universal wheels (11) are arranged at the bottom of the frame (1).

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