Track device for overall movement of large blast furnace

Abstract

The utility model relates to the technical field of metallurgical engineering construction, and in particular to a track device for the overall movement of a large blast furnace, which comprises at least one section of a standard section outside the furnace platform and at least one section of a standard section inside the furnace platform. The standard section outside the furnace platform and the standard section inside the furnace platform are of standardized design, and the components are detachably connected by connecting bolts, and can be processed and manufactured in a factory, thereby ensuring the processing accuracy and quality, and ensuring and improving the bearing capacity of the standard section outside the furnace platform and the standard section inside the furnace platform. When implemented and used, it only needs to be assembled and installed on site, which is convenient for installation and has high installation efficiency. Moreover, after the blast furnace is installed, the standard section outside the furnace platform and the standard section inside the furnace platform can be disassembled for reuse, thereby significantly reducing the movement cost of the blast furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical engineering construction, in particular to a track device for integrally moving a large blast furnace. Background Art

[0002] The overhaul and expansion of blast furnace equipment includes the dismantling of the old blast furnace and the installation of the new blast furnace shell. The method of moving the blast furnace shell as a whole can greatly shorten the construction period, but the weight of the blast furnace is thousands of tons, and the distance of the overall moving is often tens of meters, which makes the construction of the overall moving of the blast furnace very difficult.

[0003] The commonly used large-scale blast furnace overall pushing requires the use of a large-scale blast furnace overall pushing device. At present, the large-scale blast furnace overall pushing device includes a track device, a pushing tray and a hydraulic device. The pushing tray and the hydraulic device are slidably arranged on the track device. The track device is usually welded or cast on a concrete foundation, which is not convenient for disassembly and assembly, and the reuse rate is low. For example, the invention patent with application number CN202111261960.X discloses a horizontal pushing structure for large-tonnage objects and a blast furnace follow-up reverse pushing method. The patent specifically relates to a structure for horizontally pushing large-tonnage objects through a hydraulic device and a method for follow-up reverse pushing of a blast furnace. The patent uses a track welded on the foundation, and the pushing structure is not convenient for installation. Most of the components cannot be reused, and the pushing cost is high. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a track device which is convenient for disassembly and assembly and has a high reuse rate and is capable of integrally moving a large blast furnace.

[0005] The utility model solves the technical problem by adopting the following technical solution: a track device for the overall movement of a large blast furnace comprises at least one section of a standard section outside the furnace platform and at least one section of a standard section inside the furnace platform, all the standard sections outside the furnace platform are arranged in sequence along the length direction thereof, all the standard sections inside the furnace platform are arranged in sequence along the length direction thereof, and the last section of the standard section outside the furnace platform is arranged in sequence with the first section of the standard section inside the furnace platform;

[0006] The outer standard section of the furnace platform includes a first rail supporting steel beam, a first rail and a first reverse thrust rack, the first rail is detachably arranged on the first rail supporting steel beam through a first connecting bolt, the first reverse thrust rack is detachably arranged on the first rail supporting steel beam through a second connecting bolt, and first rails are respectively arranged on both sides of the first reverse thrust rack, the mounting surfaces of the two first rails are horizontal, the two first rails are parallel to each other and are symmetrical about the center line of the first reverse thrust rack, and thrust grooves with ratchet-shaped vertical cross sections are arranged at intervals on the first reverse thrust rack;

[0007] The standard section in the furnace platform includes a second track supporting steel beam, a second track and a second reverse thrust rack, the second track is detachably arranged on the second track supporting steel beam through a third connecting bolt, the second reverse thrust rack is detachably arranged on the second track supporting steel beam through a fourth connecting bolt, and second tracks are respectively arranged on both sides of the second reverse thrust rack, the mounting surfaces of the two second tracks are horizontal, the two second tracks are parallel to each other and are symmetrical about the center line of the second reverse thrust rack, and thrust grooves with ratchet-shaped vertical cross sections are arranged at intervals on the second reverse thrust rack;

[0008] The height of the second track supporting steel beam is lower than the height of the first track supporting steel beam.

[0009] Furthermore, the lengths of the first track supporting steel beam, the first track and the first reverse thrust rack are equal.

[0010] Furthermore, the first track supporting steel beam is a box-type structure made of steel sections, and the first track supporting steel beam includes a top plate, a bottom plate and two side plates, the two side plates are parallel to each other and vertically arranged on the bottom plate, and the top plate is vertically arranged on the side plates.

[0011] Furthermore, the vertical cross-section of the first track support steel beam is II-type, and anchor bolt connection holes are arranged on the bottom plate.

[0012] Furthermore, a first connecting bolt through hole and a third connecting bolt through hole are provided on the top plate, a second connecting bolt through hole is provided on the first track, and the first connecting bolt matches and passes through the second connecting bolt through hole and the first connecting bolt through hole to detachably set the first track on the first track supporting steel beam;

[0013] A third connecting bolt through hole is arranged on the top plate, a fourth connecting bolt through hole is arranged on the first reverse thrust rack, and the second connecting bolt matches and passes through the fourth connecting bolt through hole and the third connecting bolt through hole to detachably arrange the first reverse thrust rack on the first track supporting steel beam.

[0014] Furthermore, welding operation holes are arranged at intervals on the side plate.

[0015] Furthermore, a welding operation through hole corresponds to a foundation bolt connection through hole in upper and lower positions.

[0016] Furthermore, the standard section in the furnace platform includes a second track supporting steel beam, a second track and a second reverse thrust rack, the second track is detachably arranged on the second track supporting steel beam through a third connecting bolt, the second reverse thrust rack is detachably arranged on the second track supporting steel beam through a fourth connecting bolt, and second tracks are respectively arranged on both sides of the second reverse thrust rack, the mounting surfaces of the two second tracks are horizontal, the two second tracks are parallel to each other and are symmetrical about the center line of the second reverse thrust rack, and second thrust grooves with a ratchet-shaped vertical cross section are arranged at intervals on the second reverse thrust rack;

[0017] The height of the second track supporting steel beam is lower than the height of the first track supporting steel beam.

[0018] Furthermore, a first anti-shear key is provided at the bottom connection of the first track supporting steel beam, and a second anti-shear key is provided at the bottom connection of the second track supporting steel beam.

[0019] Furthermore, adjacent first track supporting steel beams, adjacent second track supporting steel beams, or the first track supporting steel beam and the second track supporting steel beam are respectively connected together through a third connecting plate.

[0020] The beneficial effects of the utility model are as follows: the track device for the overall pushing of a large blast furnace of the utility model comprises at least one standard section outside the furnace platform and at least one standard section inside the furnace platform. The standard section outside the furnace platform and the standard section inside the furnace platform are of standardized design, and the components are detachably connected by connecting bolts, and can be processed and manufactured in the factory, thereby ensuring the processing accuracy and quality, and ensuring and improving the bearing capacity of the standard section outside the furnace platform and the standard section inside the furnace platform. When it is implemented and used, it only needs to be assembled and installed on site, which is convenient for installation and has high installation efficiency. Moreover, after the blast furnace is installed, the standard section outside the furnace platform and the standard section inside the furnace platform can be disassembled for reuse, thereby significantly reducing the pushing cost of the blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main view of the track device when it is put into use;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is a top view schematic diagram of the track device when it is put into use;

[0024] Figure 4 It is a structural diagram of the standard section outside the furnace;

[0025] Figure 5 It is a structural diagram of the standard section in the furnace;

[0026] Figure 6 is a schematic diagram of the structure of the first reverse thrust rack;

[0027] Marked as: standard section outside the furnace platform 1, first track supporting steel beam 11, top plate 111, bottom plate 112, anchor bolt connection hole 1121, side plate 113, welding operation hole 1131, first track 12, second connecting bolt hole 121, first reverse thrust rack 13, thrust groove 131, fourth connecting bolt hole 132, first shear key 14, standard section inside the furnace platform 2, second track supporting steel beam 21, second track 22, second reverse thrust rack 23, second shear key 24, third connecting plate 3, push tray 4, movable slide 41, blast furnace 5, furnace platform 6, reverse thrust hydraulic device 7. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figures 1 to 6 As shown, the track device for the overall movement of a large blast furnace of the utility model comprises at least one section of the standard section 1 outside the furnace platform and at least one section of the standard section 2 inside the furnace platform, all the standard sections 1 outside the furnace platform are arranged in sequence along the length direction thereof, all the standard sections 2 inside the furnace platform are arranged in sequence along the length direction thereof, and the last section of the standard section 1 outside the furnace platform is arranged in sequence with the first section of the standard section 2 inside the furnace platform;

[0030] The standard section 1 outside the furnace platform includes a first rail supporting steel beam 11, a first rail 12 and a first reverse thrust rack 13. The first rail 12 is detachably arranged on the first rail supporting steel beam 11 through a first connecting bolt. The first reverse thrust rack 13 is detachably arranged on the first rail supporting steel beam 11 through a second connecting bolt. The first rails 12 are respectively arranged on both sides of the first reverse thrust rack 13. The mounting surfaces of the two first rails 12 are horizontal. The two first rails 12 are parallel to each other and symmetrical about the center line axis of the first reverse thrust rack 13. The first reverse thrust rack 13 is provided with thrust grooves 131 with ratchet-shaped vertical cross-sections at intervals.

[0031] In order to adopt standardized design and facilitate use, Figure 1 , Figure 5As shown, a preferred structure of the standard section 2 in the furnace platform of the utility model is: the standard section 2 in the furnace platform includes a second track supporting steel beam 21, a second track 22 and a second reverse thrust rack 23, the second track 22 is detachably arranged on the second track supporting steel beam 21 by a third connecting bolt, the second reverse thrust rack 23 is detachably arranged on the second track supporting steel beam 21 by a fourth connecting bolt, and second tracks 22 are respectively arranged on both sides of the second reverse thrust rack 23, the mounting surfaces of the two second tracks 22 are horizontal, the two second tracks 22 are parallel to each other and are symmetrical about the center line axis of the second reverse thrust rack 23, and thrust grooves with ratchet-shaped vertical cross-sections are arranged at intervals on the second reverse thrust rack 23; the height of the second track supporting steel beam 21 is lower than the height of the first track supporting steel beam 11. The structure of the standard section 2 inside the furnace platform is similar to that of the standard section 1 outside the furnace platform. The foundation of the furnace platform 6 can be used for installation inside the furnace platform 6, thereby reducing the height of the standard section 2 inside the furnace platform and reducing the manufacturing cost of the standard section 2 inside the furnace platform. For example, the height of the first rail support steel beam 11 is 700 mm, and the foundation of the furnace platform 6 is 570 mm. The second rail support steel beam 21 is installed on the foundation of the furnace platform 6, and the height of the second rail support steel beam 21 only needs to be set to 130 mm. The first rail support steel beam 11 and the second rail support steel beam 21 have the same structure and size, the first rail 12 and the second rail 22 have the same structure and size, and the first reverse rack 13 and the second reverse rack 23 have the same structure and size. This arrangement is convenient for manufacturing and use, and reduces costs.

[0032] All the standard sections 1 outside the furnace are arranged in sequence along the length direction, all the standard sections 2 inside the furnace are arranged in sequence along the length direction, the last section of the standard section 1 outside the furnace is arranged in sequence with the first section of the standard section 2 inside the furnace, that is, the first track supporting steel beam 11 and the second track supporting steel beam 21 are arranged in sequence along the length direction, the first track 12 and the second track 22 are arranged in sequence along the length direction, and the first reverse thrust rack 13 and the second reverse thrust rack 23 are arranged in sequence along the length direction.

[0033] Large blast furnaces refer to those weighing tens of millions of tons, such as Figure 1 The embodiment shown is a track device for integrally moving the blast furnace belt foundation. 3It has a diameter of 14.90m, a height of 38.88m, a horizontal sliding distance of 45m, and a total weight of about 7,200 tons including foundation, refractory materials, furnace pipes, equipment, etc. When the track device of the utility model is implemented and used, the track device of the utility model is arranged on one side of the blast furnace installation position, and the second track 22 extends to the blast furnace installation position, and the pushing tray 4 and the reverse thrust hydraulic device 7 are respectively slidably connected to the first track 12 of the standard section 1 outside the furnace platform through the movable slide groove 41, and the pushing tray 4 and the reverse thrust hydraulic device 7 can slide along the first track 12 and the second track 22; after the blast furnace 5 is assembled and constructed after the pushing tray 4 is completed, the lifting rods of the reverse thrust hydraulic device 7 are respectively connected to the blast furnace 5, and each reverse thrust hydraulic device 7 is supported by the thrust groove 131 at the starting end of the pushing, and synchronously pushes the blast furnace 5. After the reverse thrust hydraulic device 7 is pushed to the limit position, the reverse thrust hydraulic device 7 retracts and makes the reverse thrust rod slide into the adjacent thrust groove 131 and pushes again synchronously, and this reciprocating cycle is repeated until the blast furnace 5 is pushed to the blast furnace installation position.

[0034] Specifically, in order to further adopt standardized design and facilitate production and use, the lengths of the first track supporting steel beam 11, the first track 12, the first reverse thrust rack 13, the second track supporting steel beam 21, the second track 22, and the second reverse thrust rack 23 are all equal. In order to facilitate transportation, the length is preferably 4-6m.

[0035] In order to ensure the bearing capacity, the first track supporting steel beam 11 and the second track supporting steel beam 21 are preferably made of Q355-B steel plates with a thickness of 30 mm; the first track 12 and the second track 22 are preferably made of Q345 square steel with specifications of 20 mm × 120 mm × 110 mm; the first reverse thrust rack 13 and the second reverse thrust rack 23 are also preferably made of Q345 square steel with specifications of 20 mm × 120 mm × 110 mm.

[0036] In order to improve the bearing capacity of the first track support steel beam 11 and the second track support steel beam 21, the first track support steel beam 11 and the second track support steel beam 21 have the same structure. This article takes the first track support steel beam 11 as an example for explanation. A preferred structure of the first track support steel beam 11 of the utility model is: Figure 4 As shown, the first track support steel beam 11 is a box-type structure made of steel sections. The first track support steel beam 11 includes a top plate 111, a bottom plate 112 and two side plates 113. The two side plates 113 are parallel to each other and vertically arranged on the bottom plate 112. The top plate 111 is vertically arranged on the side plates 113, and the vertical cross-section of the first track support steel beam 11 is type II.

[0037] For example Figure 1 , Figure 2 and Figure 4As shown, when the track device is implemented, the first track support steel beam 11 is fixed by the anchor bolts pre-buried on one side of the blast furnace installation position, and the bottom plate 112 is provided with anchor bolt connection holes 1121. The anchor bolts pass through the anchor bolt connection holes 1121 to fix the first track support steel beam 11. In order to ensure the installation accuracy and installation speed of the first track support steel beam 11, the top screw method is used for leveling and alignment. The top screw adopts the method of anchor bolts plus double nuts, which is simple to operate and saves costs. In order to further improve the installation strength of the first track support steel beam 11, the first track support steel beam 11 can also be grouted with non-shrinkage grouting material to improve the strength, but this will cause certain damage to the first track support steel beam 11 during disassembly.

[0038] In order to facilitate the connection and disassembly of various components in the first track supporting steel beam 11, a first connecting bolt through hole and a third connecting bolt through hole are provided on the top plate 111, and a second connecting bolt through hole 121 is provided on the first track 12. The first connecting bolt matches and passes through the second connecting bolt through hole 121 and the first connecting bolt through hole to detachably set the first track 12 on the first track supporting steel beam 11; a fourth connecting bolt through hole 132 is provided on the first reverse thrust rack 13, and the second connecting bolt matches and passes through the fourth connecting bolt through hole 132 and the third connecting bolt through hole to detachably set the first reverse thrust rack 13 on the first track supporting steel beam 11.

[0039] Since the first rail supporting steel beam 11 is usually formed by welding, in order to facilitate the welding operation, welding operation holes 1131 are arranged at intervals on the side plate 113 .

[0040] In order to further facilitate the installation of the first rail support steel beam 11, a welding operation hole 1131 corresponds to a foundation bolt connection hole 1121 in the upper and lower positions. The size of the welding operation hole 1131 is much larger than that of the foundation bolt connection hole 1121. The welding operation hole 1131 is used for positioning, which is convenient for the installer to identify and install.

[0041] In order to prevent excessive deformation of the connection during the movement of the blast furnace 5, resulting in unevenness at the joints, adjacent first rail support steel beams 11, adjacent second rail support steel beams 21, or the first rail support steel beams 11 and the second rail support steel beams 21 are respectively connected together by a third connecting plate 3.

[0042] In order to reduce the possibility of slippage of the first rail support steel beam 11 and the second rail support steel beam 21 during the movement of the blast furnace 5, a first shear key 14 is provided at the bottom connection of the first rail support steel beam 11, and a second shear key 24 is provided at the bottom connection of the second rail support steel beam 21.

[0043] In summary, the utility model provides a track device for the overall pushing of a large blast furnace, comprising at least one standard section 1 outside the furnace platform and at least one standard section 2 inside the furnace platform. The standard section 1 outside the furnace platform and the standard section 2 inside the furnace platform are of standardized design, and the components are detachably connected by connecting bolts, and can be processed and manufactured in the factory, thereby ensuring the processing accuracy and quality, and ensuring and improving the bearing capacity of the standard section 1 outside the furnace platform and the standard section 2 inside the furnace platform. When it is implemented and used, it only needs to be assembled and installed on site, which is convenient for installation and has high installation efficiency. Moreover, after the blast furnace is installed, the standard section 1 outside the furnace platform and the standard section 2 inside the furnace platform can be disassembled for reuse, which significantly reduces the pushing cost of the blast furnace.

Claims

1. A track device for integrally moving a large blast furnace, characterized in that: It comprises at least one furnace platform outer standard section (1) and at least one furnace platform inner standard section (2), all furnace platform outer standard sections (1) are arranged in sequence along its length direction, all furnace platform inner standard sections (2) are arranged in sequence along its length direction, and the last furnace platform outer standard section (1) is arranged in sequence with the first furnace platform inner standard section (2); The furnace platform outer standard section (1) comprises a first rail supporting steel beam (11), a first rail (12) and a first reverse thrust rack (13); the first rail (12) is detachably arranged on the first rail supporting steel beam (11) by means of a first connecting bolt; the first reverse thrust rack (13) is detachably arranged on the first rail supporting steel beam (11) by means of a second connecting bolt; first rails (12) are respectively arranged on both sides of the first reverse thrust rack (13); the mounting surfaces of the two first rails (12) are horizontal; the two first rails (12) are parallel to each other and are symmetrical about the center line of the first reverse thrust rack (13); and thrust grooves (131) having a ratchet-shaped vertical cross section are arranged at intervals on the first reverse thrust rack (13); The standard section (2) in the furnace platform comprises a second rail supporting steel beam (21), a second rail (22) and a second reverse thrust rack (23); the second rail (22) is detachably arranged on the second rail supporting steel beam (21) by a third connecting bolt; the second reverse thrust rack (23) is detachably arranged on the second rail supporting steel beam (21) by a fourth connecting bolt; second rails (22) are respectively arranged on both sides of the second reverse thrust rack (23); the mounting surfaces of the two second rails (22) are horizontal; the two second rails (22) are parallel to each other and are symmetrical about the center line of the second reverse thrust rack (23); and thrust grooves with a ratchet-shaped vertical cross section are arranged at intervals on the second reverse thrust rack (23); The height of the second track supporting steel beam (21) is lower than the height of the first track supporting steel beam (11).

2. The track device for overall movement of a large blast furnace as claimed in claim 1, characterized in that: The lengths of the first track support steel beam (11), the first track (12) and the first reverse thrust rack (13) are equal.

3. The track device for integrally moving a large blast furnace as claimed in claim 1, characterized in that: The first track support steel beam (11) is a box-shaped structure made of steel sections. The first track support steel beam (11) comprises a top plate (111), a bottom plate (112) and two side plates (113). The two side plates (113) are parallel to each other and vertically arranged on the bottom plate (112), and the top plate (111) is vertically arranged on the side plates (113).

4. The track device for integrally moving a large blast furnace as claimed in claim 3, characterized in that: The vertical cross section of the first track support steel beam (11) is II-shaped, and the bottom plate (112) is provided with anchor bolt connection holes (1121).

5. The track device for integrally moving a large blast furnace as claimed in claim 4, characterized in that: A first connection bolt through hole and a third connection bolt through hole are provided on the top plate (111), and a second connection bolt through hole (121) is provided on the first track (12); the first connection bolt matches and passes through the second connection bolt through hole (121) and the first connection bolt through hole, so that the first track (12) is detachably arranged on the first track supporting steel beam (11); A fourth connecting bolt through hole (132) is provided on the first reverse thrust rack (13), and a second connecting bolt passes through the fourth connecting bolt through hole (132) and the third connecting bolt through hole to detachably set the first reverse thrust rack (13) on the first track supporting steel beam (11).

6. The track device for integrally moving a large blast furnace as claimed in claim 4, characterized in that: Welding operation holes (1131) are arranged at intervals on the side plate (113).

7. The track device for integrally moving a large blast furnace as claimed in claim 6, characterized in that: A welding operation through hole (1131) corresponds to a foundation bolt connection through hole (1121) in upper and lower positions.

8. The track device for integrally moving a large blast furnace according to any one of claims 1 to 7, characterized in that: The bottom connection of the first track support steel beam (11) is provided with a first anti-shear key (14), and the bottom connection of the second track support steel beam (21) is provided with a second anti-shear key (24).

9. The track device for integrally moving a large blast furnace as claimed in claim 1, characterized in that: Adjacent first track support steel beams (11), adjacent second track support steel beams (21), or the first track support steel beam (11) and the second track support steel beam (21) are connected together via a third connecting plate (3).

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