A suspended platform for construction of unshaped refractory materials in blast furnaces

Abstract

The utility model discloses a suspension platform for construction of unshaped refractory in blast furnace, including suspension board, the suspension board all around end surface is established with accommodation cavity, is provided with hidden sliding extension plate in accommodation cavity, hidden sliding extension plate can slide to suspension board outside along the direction of the guidance of accommodation cavity, the suspension board top all around is provided with the protective rail, and the protective rail includes fixed rail and telescopic rail, wherein the limit position of telescopic rail after stretching out is adapted with the limit position of hidden sliding extension plate after sliding to suspension board outside, through setting the hidden sliding extension plate of the outside slide in the accommodation cavity of the suspension board all around end surface, can according to the diameter of the different region of blast furnace interior flexible adjustment overall working radius of suspension platform, when being in the region of furnace body etc.

Description

Technical Field

[0001] This utility model belongs to the field of refractory material construction, specifically relating to a suspension platform for the construction of unshaped refractory materials in blast furnaces. Background Technology

[0002] In the maintenance of unshaped refractory materials inside blast furnaces, the construction methods differ for different height areas: for lower locations such as the hearth and bottom, temporary support platforms such as steel supports are usually erected, and construction workers can reach the maintenance areas by standing on the supports; while for higher locations such as the throat and body, due to the lack of fixed support structures, suspended platforms are required for the operation.

[0003] These suspended platforms typically dangle from the furnace top opening. They are vertically lowered into the furnace via blast furnace cranes, specialized winches, or other lifting equipment connected to steel cables and chains. The working height is controlled by adjusting the suspension length, thus covering different height areas from the furnace throat to the furnace body and belly. This suspension method adapts to the vertical space characteristics inside the blast furnace, meeting the needs of workers for tasks such as spraying unshaped refractory materials and maintenance along the furnace wall. It also aligns with the structural characteristics of the blast furnace, which has a highly enclosed structure and only the furnace top is suitable for hoisting large equipment.

[0004] However, the internal diameter of a blast furnace varies in stages. Generally, the diameter of the furnace throat is smaller than that of the furnace body. As a result, the maximum working radius of the traditional suspended platform hanging from the top opening of the furnace cannot adapt to the larger radial dimensions of the furnace body, making it difficult to cover the entire maintenance range of the furnace body area and causing inconvenience to maintenance operations inside the furnace at higher positions. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, this utility model provides a suspension platform for the construction of unshaped refractory materials in blast furnaces.

[0006] The technical solution adopted by this utility model is: a suspension platform for construction of unshaped refractory materials in blast furnace, including a suspension plate, and a receiving cavity is opened on all four end faces of the suspension plate. A hidden sliding extension plate is provided in the receiving cavity, and the hidden sliding extension plate can slide outward along the guide direction of the receiving cavity.

[0007] The suspended platform is surrounded by protective railings, which include fixed railings and telescopic railings. The extreme position of the telescopic railings after extension is matched with the extreme position of the concealed sliding extension plate after sliding outwards from the suspended platform.

[0008] The concealed sliding extension plate includes a plate body, with arc-shaped sliding strips integrally formed with the plate body on the left and right sides and bottom, and a handle connection part integrally formed with the plate body on the rear side, the handle connection part being located at the middle position in the width direction of the plate body.

[0009] A rotating groove is provided above the handle connection part. A first rotating column is provided inside the rotating groove, which connects the width direction of the rotating groove. The vertical surface of the rotating groove near the plate is the first limiting surface, and the horizontal surface of the upper end of the rotating groove away from the plate is the supporting surface.

[0010] The concealed sliding extension plate is rotatably connected to a rotatable handle via a handle connection part provided on the rear side of the plate. The rotatable handle includes a limiting part and a rotating part. The end face of the rotating part has a first rotating hole, which is rotatably connected to a first rotating column. The front end face of the limiting part is a vertical limiting surface, and the rear end face of the limiting part is a flat limiting surface. The rotatable handle rotates within the rotating groove by engaging with the first rotating column through the first rotating hole. When the rotatable handle is rotated to its maximum extent outward from the suspension plate, the vertical limiting surface is in contact with the first limiting surface. When the rotatable handle is rotated to its maximum extent inward from the suspension plate, the flat limiting surface is in contact with the supporting surface.

[0011] The accommodating cavity also includes arc-shaped sliding grooves on the left and right sides and bottom of the cavity along the length of the cavity. The arc-shaped sliding grooves and arc-shaped sliding strips are positioned correspondingly, and the arc-shaped sliding strips can slide in the guiding direction within the arc-shaped sliding grooves. At the rear side of the cavity, a handle storage cavity communicating with the cavity is provided in the middle of the cavity width. When not in operation, the rotatable handle can be rotated to the maximum extent inward towards the suspension plate. At this time, the flat limiting surface is in contact with the supporting surface, and the rotatable handle is located inside the handle storage cavity.

[0012] A handle sliding channel is provided at the middle position of the upper surface of the suspension plate in the width direction, and the handle sliding channel is connected to the receiving cavity. The handle sliding channel corresponds to the top view projection position of the rotatable handle.

[0013] The upper part of the handle sliding channel has grooves on both sides along the length of the handle channel. The rear side of the groove is flush with the rear side of the handle sliding channel. The front side of the groove terminates at a predetermined distance behind the front side of the handle sliding channel, and the predetermined distance is consistent with the width of the rotatable handle limiting part. The upper part of the handle sliding channel has grooves on both sides along the length of the handle channel. The middle of one end face of the left groove extends to the middle of the other end face of the groove to form a second rotating post, and the middle of one end face of the right groove extends to the middle of the other end face of the groove to form a fastening post.

[0014] A rotatable limiting cover is provided above the handle sliding channel. The length of the rotatable cover is the same as the length of the groove. A second rotating hole is provided on one side of the width direction of the rotatable limiting cover, penetrating the length direction of the rotatable cover. A fastening groove is provided on the other side of the width direction of the rotatable limiting cover, penetrating the length direction of the rotatable cover. The second rotating hole and the second rotating post are rotatably connected. When the rotatable cover is rotated to a horizontal state, the fastening groove and the fastening post are matched and fastened.

[0015] When the rotatable cover is in the closed state, the notch formed by the front end face of the rotatable cover, the front end face of the handle sliding channel, and the left and right end faces of the handle sliding channel together is a limiting notch.

[0016] Suspension pre-reserved holes are provided at the four top corners of the upper surface of the suspension plate; a skeleton channel is provided inside the suspension plate, which runs through the length and width of the suspension plate, and a skeleton is fixedly installed in the skeleton channel; the skeleton channel does not interfere with the receiving cavity, and the skeleton channel intersects with the suspension pre-reserved holes.

[0017] Beneficial effects: 1. Adapting to changes in blast furnace diameter and expanding the working range: By setting concealed sliding extension plates that can slide outwards in the accommodating cavities on the four end faces of the suspension plate, the overall working radius of the suspension platform can be flexibly adjusted according to the diameter of different areas inside the blast furnace; when in areas with larger diameters such as the furnace body, the concealed sliding extension plates extend outwards, and in conjunction with the telescopic railings in the protective railings that are compatible with the concealed sliding extension plates, the problem of limited working range caused by the fixed size of traditional suspension platforms is effectively solved. 2. Improved ease of operation and safety: The concealed sliding extension plate achieves sliding by cooperating with the arc-shaped slide bar and the arc-shaped slide groove of the receiving cavity, resulting in a stable structure and smooth operation; the rotatable handle rotates by cooperating with the first rotating column of the handle connection part through the first rotating hole. When rotated outward to the vertical limiting surface and the first limiting surface, it can provide a stable grip point for workers, making it easy to pull or push the concealed sliding extension plate; when rotated inward to the flat limiting surface and the support surface, it can be stored in the handle storage cavity, avoiding structural interference in the non-working state. At the same time, the fixed railing and telescopic railing of the protective railing form continuous protection, reducing the risk of working at height. Attached Figure Description

[0018] Figure 1 This is a front view of the extended workstation of this utility model;

[0019] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention without the expanded workstations;

[0021] Figure 4This is a three-dimensional structural diagram of the extended workstation of this utility model;

[0022] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0023] Figure 6 This is a top view of the suspension plate of this utility model;

[0024] Figure 7 for Figure 6 CC section view;

[0025] Figure 8 for Figure 7 A magnified view of a section at point D;

[0026] Figure 9 A schematic diagram of the first three-dimensional structure of the concealed sliding extension plate;

[0027] Figure 10 This is a schematic diagram of the second three-dimensional structure of the concealed sliding extension plate;

[0028] Figure 11 for Figure 10 A magnified view of a section at point E in the middle;

[0029] Figure 12 This is a schematic diagram of the first three-dimensional structure of the rotatable handle;

[0030] Figure 13 This is a schematic diagram of the second three-dimensional structure of the rotatable handle;

[0031] Figure 14 This is a schematic diagram showing the rotatable handle and the handle connection part rotating together.

[0032] Figure 15 This is a front view of the rotatable limiting cover.

[0033] Figure 16 A schematic diagram of the telescopic guardrail extending or retracting;

[0034] Figure 17 This is a top view of a fixed railing;

[0035] The diagram shows the following markings: 1. Suspension plate; 11. Receiving cavity; 111. Arc-shaped slide groove; 112. Handle storage cavity; 113. Suspension pre-drilled hole; 114. Frame channel; 2. Concealed sliding extension plate; 21. Plate body; 22. Arc-shaped slide bar; 23. Handle connection part; 231. Rotating groove; 232. First rotating column; 233. First limiting surface; 234. Support surface; 3. Guardrail; 31. Fixed guardrail; 32. Telescopic railing; 33. Telescopic cylinder; 34. Connecting plate; 35. Positioning hole; 4. Rotatable handle; 41. Limiting part; 42. Rotating part; 43. First rotating hole; 44. Vertical limiting surface; 45. Flat limiting surface; 5. Handle sliding channel; 6. Groove; 7. Second rotating column; 8. Fastening column; 9. Rotatable limiting cover plate; 91. Second rotating hole; 92. Fastening groove; 10. Limiting notch; 110. Frame. Detailed Implementation

[0036] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0037] like Figure 1-17 As shown, a suspended platform for construction of unshaped refractory materials in a blast furnace includes a suspended plate 1. Each of the four end faces of the suspended plate 1 is provided with a receiving cavity 11. A hidden sliding extension plate 2 is provided in the receiving cavity 11. The hidden sliding extension plate 2 can slide outward along the guide direction of the receiving cavity 11. A protective railing 3 is installed around the top of the suspended platform 1. The protective railing 3 includes a fixed railing 31 and a telescopic railing 32. The extreme position of the telescopic railing 32 after it extends outward is adapted to the extreme position of the hidden sliding extension plate 2 after it slides outward from the suspended platform 1. Its working principle is as follows: the suspended platform is equipped with a hidden sliding extension plate 2 that can slide outward in the cavity 11 around the suspended platform 1. With the guidance of the arc-shaped sliding strip 22 and the arc-shaped sliding groove 111, the working radius can be flexibly adjusted according to different diameter areas inside the blast furnace. The extreme position of the telescopic railing 32 after it extends outward is adapted to the extreme position of the hidden sliding extension plate 2 after it slides outward from the suspended platform 1 to form protection. It meets the spatial adaptation and safe operation requirements of the construction of monolithic refractory materials in the blast furnace, which reflects the applicability of this utility model.

[0038] like Figure 3 and Figure 4As shown, protective railings 3 are installed around the top of the suspended platform 1. The protective railings 3 include fixed railings 31 and telescopic railings 32. In this embodiment, each hidden sliding extension plate 2 has four telescopic railings 32 with the same vertical position and structure directly above its top view projection. Each telescopic railing 32 includes multiple hollow telescopic rods at its horizontal left and right ends, and a railing between the two telescopic rods at the outer ends on the same horizontal plane. The horizontal left and right ends of each telescopic railing 32 are connected to the fixed railing 31 through telescopic cylinders 33 on the fixed railing 31. The telescopic rods can extend and retract in the axial direction of the telescopic cylinders 33. The telescopic railing 32 directly above the top view projection of the movable extension plate 2 has a connecting plate 34 fixedly installed in the middle of its width direction. Taking this embodiment as an example, the function of the connecting plate 34 is to connect the four telescopic railings 32 mentioned above to achieve a common telescopic function, which facilitates the operation of construction personnel. When the construction personnel are operating on the suspended plate 1, they first operate the hidden sliding extension plate 2 to extend it outward, and then push the connecting plate 34 outward by hand. The connecting plate 34 drives the multiple telescopic rods of the four telescopic railings 32 to extend outward synchronously from the telescopic cylinder 33, thereby realizing that the four telescopic railings 32 move outward synchronously, forming a protective barrier above the work position of the hidden sliding extension plate 2 during operation.

[0039] When the telescopic railing 32 is not in use, the telescopic rods are all retracted inside the telescopic cylinder 33. In this state, the top left telescopic cylinder 33 corresponding to each hidden sliding extension plate 2 has a positioning hole 35 that penetrates the telescopic cylinder 33 and the top of the telescopic rod inside it. When not in use, a positioning pin can be inserted into the positioning hole 35. When in use, the positioning pin is pulled out, and the telescopic rod can extend and retract normally. Its function is to ensure that the telescopic rod does not extend and retract arbitrarily when the telescopic railing 32 is not in use, thereby ensuring construction safety and contributing to the scientific rationality and practicality of this utility model.

[0040] In addition to ordinary metals, the materials of the suspension plate 1 and the concealed sliding extension plate 2 described in this utility model can be lightweight alloys or ultra-high molecular weight polyethylene fibers. Lightweight alloys have the characteristics of high strength and light weight, which can reduce the overall weight while ensuring the structural load-bearing capacity, facilitate the smooth sliding of the concealed sliding extension plate 2, and reduce the load pressure on the suspension plate 1. Ultra-high molecular weight polyethylene fibers have excellent impact resistance, wear resistance and lightweight characteristics. They can withstand the external forces during construction and further control the self-weight of the components, avoiding the impact of excessive material weight on sliding performance or increased load on the suspension structure. At the same time, both materials have good durability and can adapt to various working conditions in the construction environment, ensuring that the suspension plate 1 and the concealed sliding extension plate 2 maintain stable structural performance and safety reliability during long-term use.

[0041] The concealed sliding extension plate 2 includes a plate body 21. Arc-shaped sliding strips 22, integrally formed with the plate body 21 and arranged along its length, are provided on the left, right, and bottom sides of the plate body 21. A handle connection part 23, integrally formed with the plate body 21, is provided on the rear side of the plate body 21, positioned at the middle of the width direction of the plate body 21. In this configuration, the arc-shaped sliding strips 22 on the left, right, and bottom sides of the concealed sliding extension plate 2 are integrally formed with the plate body 21 and arranged along its length. They can cooperate with the arc-shaped sliding groove 111 of the accommodating cavity 11 to achieve stable sliding, ensuring that the plate body 21 does not shift during extension and retraction. The handle connection part 23 is located at the middle of the rear side of the plate body 21. The handle connecting part 23 and the plate body 21 are integrated into one structure, providing a mounting base for the rotatable handle 4 and facilitating the sliding of the plate body 21 through the handle. The integrated structural design enhances the overall strength and ensures the stability of the sliding and operation process. When maintaining the sliding function of this utility model, lubricating oil can be applied to the arc-shaped slide groove 111 to ensure its sliding function. In addition, the arc-shaped slide bar 22 and the arc-shaped slide groove 111 in this utility model are appropriately fitted with a clearance, which ensures that the arc-shaped slide bar 22 can slide smoothly in the arc-shaped slide groove 111 when the rotatable handle 4 is pushed, and also prevents the arc-shaped slide bar 22 from easily sliding in the arc-shaped slide groove 111 without the action of external force.

[0042] A rotating groove 231 is provided above the handle connecting part 23. A first rotating column 232 is provided inside the rotating groove 231, connecting the width direction of the rotating groove 231. The vertical surface of the rotating groove 231 near the plate 21 is the first limiting surface 233, and the horizontal surface of the upper end of the rotating groove 231 away from the plate 21 is the supporting surface 234. In this configuration, the rotating groove 231 above the handle connecting part 23 provides installation and rotation space for the rotatable handle 4. The first rotating column 232 inside is arranged along the width direction of the rotating groove 231, serving as the rotation axis of the rotatable handle 4 to realize the rotational connection of the handle. The first limiting surface 233 is used to limit the extreme position of the rotatable handle 4 to rotate outward, and the supporting surface 234 is used to support the rotatable handle 4 to rotate inward to the storage state. The rotation range and positioning of the rotatable handle 4 are clearly defined through the cooperation of various structures, ensuring the stability of operation and contributing to the practicality and scientific rationality of this utility model.

[0043] The concealed sliding extension plate 2 is rotatably connected to a rotatable handle 4 via a handle connection part 23 located on the rear side of its plate body 21. The rotatable handle 4 includes a limiting part 41 and a rotating part 42. The end face of the rotating part 42 has a first rotating hole 43, which is rotatably connected to the first rotating column 232. The front end face of the limiting part 41 is a vertical limiting surface 44, and the rear end face of the limiting part 41 is a flat limiting surface 45. The rotatable handle 4 rotates within the rotating groove 231 through the first rotating hole 43 and the first rotating column 232. When the rotatable handle 4 rotates to its maximum extent outward from the suspension plate 1, the vertical limiting surface 44 is in contact with the first limiting surface 233. When the rotatable handle 4 rotates to its maximum extent inward from the suspension plate 1, the flat limiting surface 45 is in contact with the first limiting surface 232. 5. It fits against the support surface 234; the hidden sliding extension plate 2 is rotatably connected to the rotatable handle 4 through the handle connection part 23 on the rear side of the plate body 21. The rotating part 42 of the rotatable handle 4 rotates by cooperating with the first rotating column 232 through the first rotating hole 43. The vertical limiting surface 44 of its limiting part 41 fits against the first limiting surface 233 when the handle is rotated to the maximum extent towards the outside of the suspension plate 1. At this time, it can stably transmit thrust, which makes it easy to drive the hidden sliding extension plate 2 to slide by pushing the rotatable handle 4. The flat limiting surface 45 of the limiting part 41 fits against the support surface 234 when the handle is rotated to the maximum extent towards the inside of the suspension plate 1. At this time, the rotatable handle 4 can be accurately stored and is easy to take out quickly when used. This setting reflects the practicality and scientific rationality of this utility model.

[0044] The accommodating cavity 11 also includes arc-shaped sliding grooves 111 opened on the left and right sides and bottom of the cavity along the length direction of the cavity 11. The arc-shaped sliding grooves 111 and the arc-shaped sliding strips 22 are positioned correspondingly, and the arc-shaped sliding strips 22 can slide in the guiding direction within the arc-shaped sliding grooves 111. On the rear side of the cavity 11, a handle storage cavity 112 communicating with the cavity 11 is opened at the middle position of the cavity width. When not in working state, the rotatable handle 4 is rotated to the maximum extent inward to the suspension plate 1. At this time, the flat limiting surface 45 is in contact with the supporting surface 234, and the rotatable handle 4 is located inside the handle storage cavity 112.

[0045] A handle sliding channel 5 is provided at the middle of the width direction of the upper end face of the suspension plate 1, and is connected to the receiving cavity 11. The handle sliding channel 5 corresponds to the top view projection position of the rotatable handle 4. In this configuration, the handle sliding channel 5 provides the rotatable handle 4 with a movable space, so that when the worker is working above the suspension plate 1, he can operate the rotatable handle 4 through the handle sliding channel 5 as needed, thereby driving the hidden sliding extension plate 2 to slide in the receiving cavity 11, improving the convenience of operation.

[0046] The upper part of the handle sliding channel 5 has grooves 6 on both sides along the length of the handle channel. The rear side of the groove 6 is flush with the rear side of the handle sliding channel 5. The front side of the groove 6 terminates at a predetermined distance behind the front side of the handle sliding channel 5, and this predetermined distance is consistent with the width of the rotatable handle 4 limiting part 41. The upper part of the handle sliding channel 5 has grooves 6 on both sides along the length of the handle channel. The middle of one end face of the left groove 6 extends to the middle of the other end face of the groove 6 to form a second rotating post 7. The middle of one end face of the right groove 6 extends to the middle of the other end face of the groove 6 to form a fastening post 8. In this arrangement, the second rotating post 7 of the left groove 6 and the fastening post 8 of the right groove 6 provide the rotating shaft and fastening fixing point for the rotatable limiting cover plate 9, respectively.

[0047] A rotatable limiting cover plate 9 is provided above the handle sliding channel 5. The length of the rotatable cover plate is the same as the length of the groove 6. A second rotating hole 91 penetrating the length direction of the rotatable cover plate is opened on one side of the end face width direction of the rotatable cover plate 9, and a fastening groove 92 penetrating the length direction of the rotatable cover plate is opened on the other side of the end face width direction of the rotatable cover plate 9. The second rotating hole 91 is rotatably connected with the second rotating post 8. When the rotatable cover plate is rotated to a horizontal state, the fastening groove 92 is adapted to fasten with the fastening post 8. The rotatable limiting cover plate above the handle sliding channel 5 9, whose length is the same as that of groove 6, is rotated and connected to the second rotating post 7 of the left groove 6 through the second rotating hole 91 on one side of the end face width direction. The fastening groove 92 on the other side is adapted to fasten with the fastening post 8 of the right groove 6 when the cover plate is rotated to the horizontal state. It can not only control the opening and closing of the handle sliding channel 5 by rotation, but also form a stable shield in the horizontal fastening state to prevent foreign objects from entering the channel and affecting the operation of the rotatable handle 4. At the same time, it can cover the handle sliding channel 5 to prevent construction personnel from stepping into the air and falling due to instability, thus ensuring construction safety.

[0048] When the rotatable cover is in the closed state, the notch formed by the front end face of the rotatable cover, the front end face of the handle sliding channel 5, and the left and right end faces of the handle sliding channel 5 is a limiting notch 10. The limiting notch 10's primary function is to allow the rotatable cover to rotate to the closed state after the rotatable handle 4 drives the hidden sliding extension plate 2 to slide to its limit distance. At this time, the limiting part 41 of the rotatable handle 4 is... The front end face of the sliding channel 5 is blocked, and the limiting part 41 is in a vertical state. The vertical limiting surface 44 of the limiting part 41 is in contact with the front end face of the sliding channel 5, and the horizontal limiting surface 45 of the limiting part 41 is in contact with the front end face of the rotatable cover. The upper end of the limiting part 41 of the rotatable handle 4 is located inside the limiting notch 10. At this time, since the rotatable handle 4 is limited and will not rotate, the hidden sliding extension plate 2 connected to the rotatable handle 4 is limited when sliding out for work and will not move at will. This expands the construction range while ensuring the safety of workers. This design reflects the scientific rationality and practicality of this utility model.

[0049] The suspension plate 1 has four apex holes 113 at its upper end face, each penetrating the plate 1. A frame channel 114, extending through the length and width of the suspension plate 1, is provided inside the suspension plate 1. A frame 110 is fixedly installed within the frame channel 114. The frame channel 114 does not interfere with the receiving cavity 11, but intersects with the suspension holes 113. The suspension holes 113 at the four apex holes of the upper end face of the suspension plate 1 penetrate the plate 1 and are used to suspend and fix the suspension plate 1 via connectors, providing suspension support points for the overall device. The frame 110 fixed within the frame channel 114 extending through the length and width of the suspension plate 1 forms a longitudinal and transverse support structure. The system is designed to distribute the load and enhance the structural strength and rigidity of the suspension plate 1. The skeleton channel 114 does not interfere with the receiving cavity 11, thus avoiding any impact on the storage and sliding of the concealed sliding extension plate 2. The skeleton channel 114 intersects with the suspension reserved hole 113. Its function is that when the connector suspends the suspension plate 1 through the suspension reserved hole 113, the connector can cooperate with the skeleton 110 in the suspension reserved hole 113, so that part of the suspension force can be transferred to the skeleton 110. With the support of the skeleton 110, the suspension stress is distributed, and the area around the suspension reserved hole 113 is prevented from deforming or being damaged due to excessive local stress, thereby further improving the stability and safety of the suspension plate 1 during suspension.

[0050] Specific working principle: Before construction, the suspension plate 1 is connected to the hoisting equipment on the top of the blast furnace using connectors through the four pre-drilled holes 113 at the four corners of the upper surface of the suspension plate 1. At this time, the skeleton 110 in the internal skeleton channel 114 of the suspension plate 1 intersects with the pre-drilled holes 113. The connectors cooperate with the skeleton 110 to transfer the suspension force to the skeleton 110 and disperse the suspension stress. Subsequently, the construction personnel operate the lifting equipment to suspend the suspension plate 1 from the furnace top inlet to the predetermined construction position inside the furnace, ensuring the stable suspension of the suspension plate 1. During construction, if it is necessary to work in areas with a large diameter such as the furnace body, the construction personnel first operate the hidden sliding extension plate 2: by hand, they flip the rotatable limiting cover plate 9 upward from the limiting notch 10 to make it... Rotate the second rotating column 7 around the left groove 6 to release the engagement between the fastening groove 92 and the fastening column 8, and open the rotatable limiting cover 9 to expose the handle sliding channel 5. Then, hold the rotatable handle 4 of the concealed sliding extension plate 2 and rotate it from inside the handle storage cavity 112 to the outside of the suspension plate 1 until the vertical limiting surface 44 of the rotatable handle 4 is in contact with the first limiting surface 233 of the handle connection part 23. At this time, the rotatable handle 4 is in a vertical state, which is convenient for applying force. After that, the construction personnel push the rotatable handle 4 along the handle sliding channel 5, which drives the plate body 21 of the concealed sliding extension plate 2 to slide along the arc-shaped slide groove 111 of the receiving cavity 11. The arc-shaped slide strip 22 of the plate body 21 and the arc-shaped slide groove 111 With the guide in place, the concealed sliding extension plate 2 extends outward from the suspension plate 1. When the concealed sliding extension plate 2 slides to its limit distance, the construction personnel rotate the rotatable limiting cover plate 9 above the handle sliding channel 5 to a horizontal state, so that its fastening groove 92 engages with the fastening post 8 of the right groove 6. At this time, the limiting part 41 of the rotatable handle 4 is blocked by the front end face of the handle sliding channel 5. The vertical limiting surface 44 of the limiting part 41 is in contact with the front end face of the handle sliding channel 5, and the horizontal limiting surface 45 is in contact with the front end face of the rotatable cover plate. The upper end of the limiting part 41 is located within the limiting notch 10, and the rotatable handle 4 is limited and cannot rotate, thereby restricting the concealed sliding extension plate 2 and preventing it from moving arbitrarily; subsequently, the construction... Workers operate the telescopic guardrail 32 of the protective railing 3: First, pull out the positioning pins on the top left telescopic cylinder 33 and the internal telescopic rod, then push the connecting plate 34 in the middle of the width direction of the telescopic guardrail 32 outward. The connecting plate 34 drives multiple telescopic rods of the four telescopic guardrails 32 to extend synchronously from the telescopic cylinder 33, thereby realizing that the four telescopic guardrails 32 move outward synchronously, forming a protective barrier above the work position of the hidden sliding extension plate 2 during operation; during operation, the fixed guardrail 31 of the protective railing 3 and the telescopic guardrail 32 work together to protect and prevent construction workers from falling. The frame 110 in the suspension plate 1 forms longitudinal and transverse support through the frame channel 114, enhancing the overall strength and bearing the weight of construction workers and tools;After the work is completed, the construction workers first push the telescopic bar of the telescopic guardrail 32 back into the telescopic cylinder 33, insert the positioning pin into the positioning hole 35 to fix it, then open the rotatable limiting cover 9, and pull the rotatable handle 4 inward to retract it into the handle storage cavity 112. At this time, the hidden sliding extension plate 2 can be reset.

[0051] In addition, if construction is required inside the blast furnace in the radial direction of the suspension plate 1, in addition to the four hidden sliding extension plates 2 corresponding to the construction position in this embodiment, the hoisting equipment can be adjusted so that the extension position corresponds to the construction position for construction.

Claims

1. A suspended platform for the construction of unshaped refractory materials in a blast furnace, comprising a suspension plate, characterized in that: The suspension plate has accommodating cavities on all four end faces, and hidden sliding extension plates are installed in the accommodating cavities. The hidden sliding extension plates can slide outward along the guide direction of the accommodating cavities. The suspended platform is surrounded by protective railings, which include fixed railings and telescopic railings. The extreme position of the telescopic railings after extension is matched with the extreme position of the concealed sliding extension plate after sliding outwards from the suspended platform.

2. The suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 1, characterized in that: The concealed sliding extension board includes a board body, with arc-shaped sliding strips integrally formed with the board body on the left and right sides and bottom, and a handle connection part integrally formed with the board body on the rear side, with the handle connection part located in the middle position in the width direction of the board body.

3. The suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 2, characterized in that: A rotating groove is provided above the handle connection part. A first rotating column is provided inside the rotating groove, which connects the width direction of the rotating groove. The vertical surface of the rotating groove near the plate is the first limiting surface, and the horizontal surface of the upper end of the rotating groove away from the plate is the supporting surface.

4. The suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 3, characterized in that: The concealed sliding extension plate is rotatably connected to a rotatable handle via a handle connection part located on the rear side of the plate. The rotatable handle includes a limiting part and a rotating part. The end face of the rotating part has a first rotating hole, which is rotatably connected to a first rotating column. The front end face of the limiting part is a vertical limiting surface, and the rear end face of the limiting part is a flat limiting surface. The rotatable handle rotates within the rotating groove by engaging with the first rotating column through the first rotating hole. When the rotatable handle is rotated to its maximum extent outward from the suspension plate, the vertical limiting surface is in contact with the first limiting surface. When the rotatable handle is rotated to its maximum extent inward from the suspension plate, the flat limiting surface is in contact with the supporting surface.

5. A suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 4, characterized in that: The accommodating cavity also includes arc-shaped sliding grooves on the left and right sides and bottom of the cavity along the length of the cavity. The arc-shaped sliding grooves and arc-shaped sliding strips are positioned correspondingly, and the arc-shaped sliding strips can slide in the guiding direction within the arc-shaped sliding grooves. At the rear side of the cavity, a handle storage cavity communicating with the cavity is provided in the middle of the cavity width. When not in operation, the rotatable handle can be rotated to the maximum extent inward towards the suspension plate. At this time, the flat limiting surface is in contact with the supporting surface, and the rotatable handle is located inside the handle storage cavity.

6. The suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 5, characterized in that: A handle sliding channel is provided at the middle position of the upper surface of the suspension plate in the width direction, and the handle sliding channel is connected to the receiving cavity. The handle sliding channel corresponds to the top projection position of the rotatable handle.

7. A suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 6, characterized in that: Grooves are provided on both sides of the upper part of the handle sliding channel along the length of the handle channel. The rear side of the groove is flush with the rear side of the handle sliding channel. The front side of the groove terminates at a predetermined distance behind the front side of the handle sliding channel, and the predetermined distance is consistent with the width of the rotatable handle limiting part. Grooves are provided on both sides of the upper part of the handle sliding channel along the length of the handle channel. The middle of one end face of the left groove extends to the middle of the other end face of the groove to form a second rotating post. The middle of one end face of the right groove extends to the middle of the other end face of the groove to form a fastening post.

8. The suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 7, characterized in that: A rotatable limiting cover is provided above the handle sliding channel. The length of the rotatable cover is the same as the length of the groove. A second rotating hole is opened on one side of the width direction of the end face of the rotatable limiting cover, which penetrates the length direction of the rotatable cover. A fastening groove is opened on the other side of the width direction of the end face of the rotatable limiting cover, which penetrates the length direction of the rotatable cover. The second rotating hole and the second rotating column are rotatably connected. When the rotatable cover is rotated to a horizontal state, the fastening groove and the fastening column are matched and fastened.

9. A suspended platform for construction of unshaped refractory materials in a blast furnace according to claim 8, characterized in that: When the rotatable cover is closed, the notch formed by the front end face of the rotatable cover, the front end face of the handle sliding channel, and the left and right end faces of the handle sliding channel together is the limiting notch.

10. A suspended platform for construction of unshaped refractory materials in a blast furnace according to any one of claims 1-9, characterized in that: Suspension pre-reserved holes are provided at the four top corners of the upper surface of the suspension plate; a skeleton channel is provided inside the suspension plate, which runs through the length and width of the suspension plate, and a skeleton is fixedly installed in the skeleton channel; the skeleton channel does not interfere with the receiving cavity, and the skeleton channel intersects with the suspension pre-reserved holes.

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