Hoisting hole structure of blast furnace tuyere platform
By introducing stepped holes, support plates, and movable guardrails into the hoisting hole structure of the blast furnace tuyeres platform, the problem of skewed crane ropes was solved, achieving an efficient and safe hoisting process and avoiding manual assistance and safety hazards.
Patent Information
- Application Number
- CN202520636492.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-07
AI Technical Summary
During the hoisting of the blast furnace tuyeres platform, the skewed overhead crane ropes necessitated manual assistance in hoisting, which was inefficient and posed safety hazards. Furthermore, the hoisting holes lacked edge protection.
Design a hoisting hole structure for a blast furnace tuyere platform, including stepped holes, support plates, guardrails, and movable guardrails. The movable guardrails, in conjunction with the guide rails, provide edge protection, prevent skewed pulling and hoisting, and improve hoisting efficiency and safety.
It enables hoisting to be completed without manual assistance, improving work efficiency, reducing safety hazards, and ensuring the safety and stability of the hoisting process.
Smart Images
Figure CN223951061U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the edge protection technology of blast furnace tuyere platform, concretely relates to a blast furnace tuyere platform hoisting hole structure. BACKGROUND
[0002] In modern steel smelting production, as the core equipment, the tuyere platform of blast furnace is the important area of blast furnace tuyere maintenance, replacement and related operation. The tuyere platform is usually located in the middle layer of the blast furnace body, the crane is located in the top layer, and the hoisting holes of each layer platform are consistent.
[0003] In daily production, because the hoisting holes of each layer platform are consistent, the crane at the top layer can adjust the position at will when hoisting the accessories to the top layer, and the accessories can be placed on the top platform, but for the tuyere platform in the middle layer, when hoisting, the crane can only move to the edge of the hoisting hole when the accessories are hoisted above the hoisting hole of the tuyere platform, and the accessories cannot be directly placed on the tuyere platform, so manual auxiliary hoisting ropes are needed to pull the hoisting ropes to the platform to ensure that the accessories can fall on the platform, which leads to the skewing of the crane hoisting ropes, skew hoisting, and the waste of manpower and low work efficiency due to the need for manual assistance. At the same time, due to the skew hoisting, there is an installation risk, and the hoisting hole lacks edge protection, and the edge operation is more dangerous. SUMMARY
[0004] The blast furnace tuyere platform hoisting hole structure disclosed by the utility model provides edge protection due to the existence of the movable guardrails, the operator can stand on the reserved support plate to assist in unloading, the problem of skew hoisting of the operator is avoided, the work efficiency is improved, and there is no safety hazard.
[0005] The technical scheme disclosed by the utility model is as follows: a blast furnace tuyere platform hoisting hole structure, comprising a through hole arranged on the tuyere platform, the through hole comprising an upper segment hole and a lower segment hole, the size of the upper segment hole being larger than that of the lower segment hole to form a stepped hole, a step surface being formed between the upper segment hole and the lower segment hole,
[0006] A plurality of support plates arranged at the step for plugging the through hole when idle,
[0007] A guardrail is fixedly installed around the through hole, the guardrail comprising a left side guardrail, a right side guardrail, a front side guardrail, a rear side guardrail and a movable guardrail,
[0008] A left guide rail is fixedly installed on the inner side of the left side guardrail, and a right guide rail is fixedly installed on the left side of the right guardrail, the left guide rail and the right guide rail each having two, and being arranged in the up-down direction, the left guide rail and the right guide rail being symmetrical,
[0009] The left guide rail is an L-shaped piece, the length direction of the L-shaped piece is the front-back direction, the L-shaped piece comprises a horizontal section and a vertical section fixedly connected with the horizontal section, the horizontal section is fixed on the left guardrail, and the vertical section and the left guardrail form a groove,
[0010] The left and right ends of the movable guardrail are both fixedly provided with two fixed seats, and the fixed seats are provided with rollers, and the rollers are arranged in the groove.
[0011] On the basis of the above scheme, as a preferred, the front guardrail has an opening, one side of the opening is hingedly connected with the left door guardrail, and the other side of the opening is hingedly connected with the right door guardrail, the left door guardrail is provided with a bolt pipe, the right door guardrail is provided with a bolt, the axis of the bolt pipe coincides with the axis of the bolt, and when the left door guardrail and the right door guardrail are closed, the bolt is inserted into the bolt pipe to lock the left door guardrail and the right door guardrail.
[0012] On the basis of the above scheme, as a preferred, the hole is a rectangular hole.
[0013] On the basis of the above scheme, as a preferred, the innermost side of the groove is fixedly provided with a baffle.
[0014] On the basis of the above scheme, as a preferred, the upper end of the movable guardrail is rotatably provided with a locking pin, the upper end of the left guardrail and the right guardrail is provided with a plurality of groups of pin holes, each supporting plate corresponds to a group of pin holes, when the movable guardrail moves to the pin hole, the locking pin is inserted into the pin hole by rotating the locking pin to fix the movable guardrail with the left guardrail and the right guardrail.
[0015] On the basis of the above scheme, as a preferred, the upper end of the movable guardrail is rotatably provided with a locking pin, the upper end of the left guardrail and the right guardrail is provided with a plurality of groups of pin holes, each supporting plate corresponds to a group of pin holes, when the movable guardrail moves to the pin hole, the locking pin is inserted into the pin hole by rotating the locking pin to fix the movable guardrail with the left guardrail and the right guardrail.
[0016] On the basis of the above scheme, as a preferred, the upper end of the movable guardrail is rotatably provided with a locking pin, the upper end of the left guardrail and the right guardrail is provided with a plurality of groups of pin holes, each supporting plate corresponds to a group of pin holes, when the movable guardrail moves to the pin hole, the locking pin is inserted into the pin hole by rotating the locking pin to fix the movable guardrail with the left guardrail and the right guardrail.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] When the parts need to be hoisted, the part of the support plates is removed. The movable guardrail is moved to the innermost reserved support plate along the groove, the movable guardrail is fixed to form a edge protection, the crane is lowered to the ground from the support plate-free hoisting hole on the inner side of the movable guardrail, the ground parts are hoisted, the parts are hoisted to the movable guardrail, then the parts are lowered from the reserved support plate, and the parts can be hoisted without the assistance of the operator. When the operator needs to assist in hoisting, the operator only needs to stand on the reserved support plate to assist in unloading the parts. In this state, on the one hand, the operator has the edge protection due to the existence of the movable guardrail, and on the other hand, the operator can stand on the reserved support plate to assist in unloading, so that the operator can avoid the problem of skewing and hoisting, work efficiency is improved, and there is no safety hazard.
[0019] The innermost side of the groove is fixedly provided with a baffle, so that the movable guardrail is prevented from being separated from the left guide rail and the right guide rail during the inward pushing process
[0020] The cooperation of the locking pin and the pin hole can quickly fix the movable guardrail with the left guardrail and the right guardrail.
[0021] The design that the locking pin formed by parallel steel bars cooperates with two pin holes is more stable after locking. BRIEF DESCRIPTION OF DRAWINGS
[0022] Fig. 1 is a structural schematic diagram of the utility model;
[0023] Fig. 2 is a cooperation schematic diagram of the movable guardrail and the left guardrail and the right guardrail of the utility model; DETAILED DESCRIPTION
[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, specific implementation manners of the utility model will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor, and other embodiments can be obtained.
[0025] As Figs. 1-2 Indicated, the blast furnace tuyere platform hoisting hole structure includes a through hole arranged on the tuyere platform, the through hole includes an upper section hole and a lower section hole, the size of the upper section hole is greater than the size of the lower section hole to form a stepped hole, a step surface is formed between the upper section hole and the lower section hole, and the hole is a rectangular hole.
[0026] A plurality of support plates 1 are arranged at the step and used for plugging the through hole when idle.
[0027] The through hole is fixedly provided with a guardrail in the circumferential direction, and the guardrail comprises a left guardrail 2, a right guardrail 3, a front guardrail 4, a rear guardrail 5 and a movable guardrail 6. The front guardrail has an opening, one side of the opening is hingedly connected with a left door guardrail 7, and the other side of the opening is hingedly connected with a right door guardrail 8. The left door guardrail is provided with a bolt tube 9, and the right door guardrail is provided with a bolt 10. The axis of the bolt tube coincides with the axis of the bolt. When the left door guardrail and the right door guardrail are closed, the bolt is inserted into the bolt tube to lock the left door guardrail and the right door guardrail.
[0028] The left guardrail is fixedly provided with a left guide rail 11 on the inner side, and the right guardrail is fixedly provided with a right guide rail 12 on the left side. The left guide rail and the right guide rail are each provided with two guide rails which are arranged in the up-down direction and are symmetrical.
[0029] Specifically, the left guide rail is an L-shaped piece, the length direction of the L-shaped piece is the front-back direction, the L-shaped piece comprises a horizontal section 13 and a vertical section 14 fixedly connected with the horizontal section. The horizontal section is fixed on the left guardrail, and the vertical section forms a groove with the left guardrail.
[0030] The movable guardrail is fixedly provided with two fixed seats 15 on the left and right ends, and a roller 16 is arranged on the fixed seat. The roller is arranged in the groove.
[0031] When it is necessary to hoist a part (which can be a part for maintenance or any object that needs to be used at the tuyere platform), some support plates are removed, and at least one support plate is reserved in the hoisting hole. The specific number of reserved support plates depends on the size of the part to be hoisted. The movable guardrail is moved, and the rollers move along the groove to the innermost reserved support plate. The movable guardrail is fixed to form a temporary edge protection. The crane is lowered from the inside of the movable guardrail to the ground through the hoisting hole without support plates. The part on the ground is hoisted, and the part is hoisted to the outside of the movable guardrail to the reserved support plate. Then the part is lowered from the reserved support plate. The hoisting operation can be completed without the assistance of an operator. After the part is lowered, the operator can take the part while standing on the reserved support plate. When the operator needs to assist in hoisting, the operator only needs to stand on the reserved support plate to assist in unloading the part. In this state, on the one hand, the operator has temporary edge protection due to the existence of the movable guardrail, and on the other hand, the operator can stand on the reserved support plate to assist in unloading, avoiding the problem of tilting hoisting by the operator, improving work efficiency and having no safety hazards.
[0032] In order to prevent the movable guardrail from being pushed inward and separated from the left guide rail and the right guide rail, a baffle 17 is fixedly arranged at the innermost and outermost sides of the groove.
[0033] In order to improve the convenience of the fixed movable guardrail, the upper end of the movable guardrail is rotatably provided with a locking pin 18, the upper end of the left guardrail and the right guardrail is provided with a plurality of pin holes 19, each support plate corresponds to a group of pin holes, when the movable guardrail moves to the pin hole, the locking pin is inserted into the pin hole by rotating the locking pin, and the movable guardrail is fixed with the left guardrail and the right guardrail.
[0034] Since the accessory for making the guardrail is a round pipe, the pin hole is arranged on the round pipe, if the locking pin is connected with the movable guardrail only by rotating, the locking pin cannot be smoothly inserted into the pin hole due to a slight misalignment in the use process, and the movable guardrail is not a precision part, and does not need a precision size. Therefore, in order to reduce the difficulty of manufacturing and processing, and facilitate the ordinary operator to insert the locking pin into the pin hole, the following design is made:
[0035] The upper end of the movable guardrail is fixedly provided with a sliding seat 20 on each side, the sliding seat is arranged on the upper end of the corresponding left guardrail and right guardrail and extends to the outside of the corresponding left guardrail and right guardrail, a strip-shaped hole 21 is arranged on the sliding seat, the width of the strip-shaped hole is not less than the diameter of the pin hole, each end of the inner side of the sliding seat is provided with a raised portion 22, the raised portion is provided with an arc-shaped hole 23, the locking pin includes a straight rod 24, the straight rod passes through the arc-shaped holes of the two raised portions and is fixedly connected with a limiting block 25, the limiting block can be a nut or other object with a size greater than the width of the arc-shaped hole, and the rod is fixedly connected with a steel bar which is bent multiple times to form the locking pin.
[0036] In use, the locking pin can move left and right in the straight rod arc-shaped hole to change the falling point of the front end of the locking pin, so that the locking pin is inserted into the pin hole, and the convenience of operation is improved.
[0037] Among them, the rod has two parallel steel bars which are bent multiple times to form the locking pin, each group of pin holes is composed of two pin holes, and the locking is more stable after locking.
[0038] The pin hole is also arranged on the fixed seat and the left guide rail and the right guide rail below, the pin hole on the fixed seat is only one, the number of pin holes on the left guide rail and the right guide rail is consistent with the number of pin holes, when the locking pin is inserted into the pin hole, the pin hole on the fixed seat is opposite to the pin hole on the left guide rail and the right guide rail, the pin passes through the pin holes on the fixed seat and the left guide rail or the right guide rail to fix the movable guardrail below.
[0039] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.
Claims
1. A blast furnace tuyere platform lifting hole structure, characterized in that, This includes a through hole installed on the air vent platform. The through hole consists of an upper section and a lower section. The upper section is larger than the lower section, forming a stepped hole. A stepped surface is formed between the upper and lower sections. Several support plates are placed at the steps to seal the through holes when not in use. The guardrail is fixedly installed circumferentially through the through hole. The guardrail includes a left guardrail, a right guardrail, a front guardrail, a rear guardrail, and a movable guardrail. A left guide rail is fixedly installed on the inner side of the left guardrail, and a right guide rail is fixedly installed on the left side of the right guardrail. There are two left and two right guide rails, which are spaced apart in the vertical direction. The left and right guide rails are symmetrical. The left guide rail is an L-shaped component, with its length extending forward and backward. The L-shaped component includes a horizontal section and a vertical section fixedly connected to the horizontal section. The horizontal section is fixed to the left side railing, and the vertical section forms a groove with the left side railing. Two fixed seats are fixedly installed at both ends of the movable guardrail, and rollers are installed on the fixed seats, with the rollers placed in grooves.
2. The blast furnace tuyere platform lifting hole structure of claim 1, wherein, The front guardrail has an opening, with the left door guardrail hinged to one side of the opening and the right door guardrail hinged to the other side. The left door guardrail has a latch tube, and the right door guardrail has a bolt. The axis of the latch tube coincides with the axis of the bolt. When the left and right door guardrails are closed, the bolt inserts into the latch tube to lock the left and right door guardrails.
3. The blast furnace tuyere platform lifting hole structure of claim 1, wherein, The hole is rectangular.
4. The blast furnace tuyere platform lifting hole structure of claim 1, wherein, A baffle is fixedly installed on the innermost side of the groove.
5. The blast furnace tuyere platform lifting hole structure of claim 1, wherein, The upper end of the movable guardrail is rotatably fitted with a locking pin. The upper ends of the left and right guardrails have several sets of pin holes, with each support plate corresponding to a set of pin holes. When the movable guardrail moves to the pin hole, the locking pin is rotated to insert the locking pin into the pin hole and fix the movable guardrail to the left and right guardrails.
6. The blast furnace tuyere platform lifting hole structure of claim 1, wherein, A sliding seat is fixedly installed on each of the upper two sides of the movable guardrail. The sliding seat is positioned on the upper end of the corresponding left and right guardrails and extends to the outside of the corresponding left and right guardrails. The sliding seat is provided with a strip hole, the width of which is not less than the diameter of the pin hole. Each of the two inner ends of the sliding seat has a raised part with an arc-shaped hole. The locking pin includes a straight rod, and the two ends of the straight rod pass through the arc-shaped holes on the two raised parts and are fixedly connected to the limiting block. A steel bar that has been bent multiple times is fixedly connected to the rod to form the locking pin.
7. The blast furnace tuyere platform lifting hole structure of claim 6, wherein, The rod has two parallel steel bars that have been bent multiple times to form a locking pin, and each set of pin holes consists of two pin holes.