A movable hood lifting mechanism for a converter
By employing a fully sealed hydraulic drive and chain transmission design, combined with ceramic coating protection and a dual elastic compensation mechanism, the problems of jamming and thermal expansion of the converter's movable fume hood lifting mechanism in high-temperature and high-dust environments have been solved, achieving stable and safe operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CANGZHOU CHINA RAILWAY EQUIP MFG MATERIALS CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-23
AI Technical Summary
The existing converter movable fume hood lifting mechanism is prone to jamming in high temperature and high dust environments and lacks thermal expansion compensation, resulting in structural deformation and safety risks.
It adopts a fully sealed hydraulic drive and chain transmission design, with external ceramic coating protection. The built-in hydraulic cylinder and hydraulic drive unit form a closed structure, combined with chain and double wheel transmission, and is equipped with a dual elastic compensation mechanism to absorb thermal expansion deformation. Emergency braking is achieved through a combination of temperature sensor and telescopic rod.
It effectively avoids the problem of jamming in traditional threaded rods, extends equipment life, ensures stable operation in high-temperature environments, reduces mechanical wear, and improves the stability and safety of continuous equipment operation.
Smart Images
Figure CN224394915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of converter fume hood lifting mechanism, specifically to a converter movable fume hood lifting mechanism. Background Technology
[0002] The converter movable fume hood lifting mechanism is a key piece of equipment used in the steel smelting industry for controlling flue gas emissions. Its core function is to optimize the guiding efficiency of high-temperature flue gas by precisely controlling the lifting and lowering movement of the movable fume hood and dynamically adjusting the relative position and opening size of the hood and converter inlet. This mechanism mainly consists of a hydraulic or electric drive system, a mechanical lifting device, and an intelligent control system: the drive system provides power output, and the hydraulic drive features high torque and smooth operation.
[0003] Chinese Patent CN222846752U discloses a converter movable hood lifting mechanism, comprising: a converter platform, with a converter body installed inside the converter platform and a movable sleeve body set on top of the converter body; a lifting mechanism located between the converter platform and the movable sleeve body; and a reinforcing mechanism located between the movable sleeve body and the converter platform, the reinforcing mechanism including a sliding mechanism and a positioning mechanism. The reinforcing mechanism enables reinforcement during the movement of the movable sleeve body, making it more stable, increasing the smoothness of flue gas flow, improving flue gas emission efficiency, and preventing flue gas leakage or increased load on the waste gas treatment system. It also solves the problem in existing devices where unstable positioning of the hood could lead to accidental movement of the hood during converter operation, increasing safety risks for operators and potentially causing accidents.
[0004] First, the threaded rod lifting mechanism of the aforementioned equipment is prone to jamming in high-temperature and high-dust environments, and the drive motor is directly exposed to the environment, which raises concerns about its lifespan. Second, the entire system lacks effective compensation for thermal expansion, which will lead to structural deformation after long-term operation. Utility Model Content
[0005] To solve the above-mentioned technical problems, a converter movable fume hood lifting mechanism is provided. This technical solution solves the problems of easy jamming of the threaded lifting mechanism and lack of thermal expansion treatment mentioned in the background technology.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A converter movable fume hood lifting mechanism includes: a converter platform, a sealed chamber installed at the rear top of the outer surface of the converter platform, the outer surface of the sealed chamber being coated with a ceramic coating, and a slot being opened at the bottom inside the sealed chamber, a hydraulic cylinder installed at the front inside the sealed chamber, a hydraulic drive unit electrically installed at the top of the outer surface of the hydraulic cylinder, a rod fixedly installed at the output end of the hydraulic cylinder, a first wheel inserted into the shaft surface of the rod, a chain sleeved on the outer surface of the first wheel, and the outer surface of the chain extending to the outside through the slot at the bottom of the sealed chamber, and a second wheel sleeved at the bottom of the outer surface of the chain.
[0008] Preferably, a rod is inserted into the center of the shaft surface of the second rotor, a movable sleeve body is fixedly installed at the bottom end of the shaft surface of the rod, and a converter body is fixedly installed at the bottom end of the shaft surface of the movable sleeve body.
[0009] Preferably, horizontal plates are installed on the left and right sides of the axial surface of the movable sleeve body, and a sliding groove is opened on the outer surface of the converter platform at the front section of the horizontal plate. Positioning blocks are fixedly installed on the front section of the outer surface of the horizontal plate.
[0010] Preferably, a spherical bearing is installed at the top of the outer surface of the positioning block, a limiting shaft is inserted into the inside of the slide groove, and the bottom end of the shaft surface of the limiting shaft penetrates through the cross plate and the outer surface of the spherical bearing.
[0011] Preferably, a slot is provided at the front end of the outer surface of the horizontal plate, and a wave-shaped spring steel sheet is fixedly installed inside the slot. A fixing component is provided on the outer surface of the converter platform facing the slide groove.
[0012] Preferably, a fixing block is fixedly installed at the bottom of the outer surface of the fixing member, and a converter platform is inserted into the bottom of the outer surface of the fixing block. A temperature sensor is electrically installed at the rear end of the outer surface of the fixing member.
[0013] Preferably, the internal rear end of the fixing member is provided with a telescopic rod, the outer surface of the telescopic rod is provided with a spring, the internal part of the fixing member is provided with several sets of rollers at the bottom of the outer surface of the telescopic rod and the spring, the front end of the outer surface of the telescopic rod is installed with an insert block, the rear end of the outer surface of the insert block is fixedly installed with a limit rod, and the front end of the outer surface of the insert block extends through the outer surface of the converter platform to the inside of the chute.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This solution proposes a converter movable fume hood lifting mechanism that effectively avoids the problem of traditional threaded rods easily jamming through a fully sealed hydraulic drive and chain transmission design. The sealed chamber is coated with a ceramic coating, and the internal hydraulic cylinder and hydraulic drive unit form a fully enclosed structure, isolating it from high-temperature dust corrosion and extending its service life compared to exposed drive motors. Simultaneously, the use of a chain combined with dual rotating wheels (first and second rotating wheels) eliminates the risk of thread engagement caused by dust accumulation, ensuring stable operation even in a 1200℃ flue gas environment. To address the thermal expansion problem, the mechanism incorporates a dual elastic compensation mechanism: firstly, a wave-shaped spring steel sheet in the slot at the front of the horizontal plate, with a ±20mm thermal expansion gap, absorbs the radial deformation of the movable sleeve body; secondly, a fixed internal telescopic rod and spring combination, where the spring automatically releases its extension when the temperature sensor detects an abnormal temperature rise, causing the insert block to fine-tune its locking position and prevent structural deformation due to accumulated thermal stress. Furthermore, the rollers reduce transmission friction, further reducing mechanical losses in high-temperature environments and improving the stability of continuous equipment operation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the limiting component in this utility model;
[0018] Figure 3 This is a schematic diagram of the lifting component in this utility model;
[0019] Figure 4 This is a schematic diagram of the fixing component in this utility model.
[0020] The numbers on the map are:
[0021] 1. Converter platform; 2. Horizontal plate; 3. Converter body; 4. Slide chute; 5. Sealed chamber; 6. Chain; 7. Fixing component; 8. Limiting shaft; 9. Spherical bearing; 10. Slot; 11. Corrugated spring steel sheet; 12. Positioning block; 13. Hydraulic drive unit; 14. Hydraulic cylinder; 15. First rotating wheel; 16. Insert rod; 17. Ceramic coating; 18. Second rotating wheel; 19. Telescopic rod; 20. Spring; 21. Roller; 22. Insert block; 23. Fixing block; 24. Limiting rod; 25. Main body of movable sleeve; 26. Temperature sensor. Detailed Implementation
[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.
[0023] Reference Figure 1-4As shown, a converter movable fume hood lifting mechanism includes: a converter platform 1, characterized in that: a sealing chamber 5 is installed at the rear top of the outer surface of the converter platform 1, the outer surface of the sealing chamber 5 is provided with a ceramic coating 17, and a slot is opened at the bottom of the inner part of the sealing chamber 5, a hydraulic cylinder 14 is installed at the front part of the inner part of the sealing chamber 5, a hydraulic drive unit 13 is electrically installed at the top of the outer surface of the hydraulic cylinder 14, a plug rod 16 is fixedly installed at the output end of the hydraulic cylinder 14, a first rotating wheel 15 is inserted into the shaft surface of the plug rod 16, a chain 6 is sleeved on the outer surface of the first rotating wheel 15, and the outer surface of the chain 6 extends to the outside through the slot at the bottom of the sealing chamber 5, a second rotating wheel 18 is sleeved on the bottom of the outer surface of the chain 6, a plug rod 16 is inserted at the center of the shaft surface of the second rotating wheel 18, a movable sleeve body 25 is fixedly installed at the bottom of the shaft surface of the plug rod 16, and a converter body 3 is fixedly installed at the bottom of the shaft surface of the movable sleeve body 25.
[0024] Through the above scheme, the converter movable fume hood lifting mechanism is based on the converter platform 1. A hydraulic cylinder 14 is installed in the sealed chamber 5 at the rear top of the platform, which is powered and controlled by a hydraulic drive unit 13. The insertion rod 16 at the output end of the hydraulic cylinder 14 passes through the center of the first rotating wheel 15, driving the sleeved chain 6 to move. The lower end of the chain 6 is sleeved with a second rotating wheel 18, which is connected to the movable sleeve body 25 through the insertion rod 16. The bottom end of the movable sleeve body 25 is fixed to the converter body 3, forming a lifting power chain of "hydraulic drive - rotating wheel transmission - chain traction". The ceramic coating 17 on the outer surface of the sealed chamber 5 can resist the corrosion of high-temperature flue gas, and the bottom slot provides a movement channel for the chain 6, realizing the vertical lifting of the converter body 3.
[0025] Reference Figure 1-3 As shown, horizontal plates 2 are installed on the left and right sides of the shaft surface of the movable sleeve body 25. A sliding groove 4 is opened on the outer surface of the converter platform 1 at the front section of the horizontal plate 2. Positioning blocks 12 are fixedly installed on both sides of the front section of the outer surface of the horizontal plate 2. A spherical bearing 9 is installed at the top of the outer surface of the positioning block 12. A limiting shaft 8 is inserted into the inside of the sliding groove 4, and the bottom end of the shaft surface of the limiting shaft 8 penetrates the outer surface of the horizontal plate 2 and the outer surface of the spherical bearing 9. A slot 10 is opened at the front end of the outer surface of the horizontal plate 2. A wave-shaped spring steel sheet 11 is fixedly installed inside the slot 10. A fixing part 7 is set on the outer surface of the converter platform 1 facing the sliding groove 4.
[0026] With the above scheme, the horizontal plates 2 on both sides of the movable sleeve body 25 are inserted into the slide grooves 4 of the converter platform 1. The positioning block 12 at the front end of the horizontal plate 2 is connected to the limiting shaft 8 through the spherical bearing 9. The limiting shaft 8 passes through the horizontal plate 2 and is inserted into the slide groove 4, allowing the horizontal plate 2 to move in the vertical direction while limiting radial displacement. The wave-shaped spring steel sheet 11 in the slot 10 at the front end of the horizontal plate 2 provides elastic buffering to avoid rigid collisions during lifting and lowering. The wave-shaped spring steel sheet 11 is reserved with a thermal expansion gap of ±20mm. This structure ensures the stability of the converter body 3 during lifting and lowering and reduces shaking error through "slide groove limiting + spherical bearing guidance + spring buffering".
[0027] Reference Figure 1-4 As shown, a fixing block 23 is fixedly installed at the bottom of the outer surface of the fixing member 7, and the converter platform 1 is inserted into the bottom of the outer surface of the fixing block 23. A temperature sensor 26 is electrically installed at the rear end of the outer surface of the fixing member 7. A telescopic rod 19 is provided at the rear end of the inner surface of the fixing member 7. A spring 20 is provided on the outer surface of the shaft of the telescopic rod 19. Several sets of rollers 21 are provided at the bottom of the outer surface of the telescopic rod 19 and the spring 20 inside the fixing member 7. An insert block 22 is installed on the front end of the outer surface of the telescopic rod 19. A limit rod 24 is fixedly installed on the rear end of the outer surface of the insert block 22, and the front end of the outer surface of the insert block 22 extends through the outer surface of the converter platform 1 and into the interior of the chute 4.
[0028] With the above scheme, the fixing component 7 is installed on the converter platform 1 via the fixing block 23, and the temperature sensor 26 at its rear end monitors the operating temperature of the equipment in real time. The telescopic rod 19 inside the fixing component 7 is fitted with a spring 20, and the front insert block 22 extends through the platform to the slide groove 4, cooperating with the horizontal plate 2 to achieve position locking. Rollers 21 are distributed at the bottom of the telescopic rod 19 and the spring 20 to reduce internal friction. When the temperature is abnormal, the sensor 26 triggers a signal, and the telescopic rod 19 drives the insert block 22 to move under the action of the spring 20, cooperating with the limit rod 24 to achieve emergency braking. At the same time, the elastic locking structure can adapt to thermal expansion and contraction to avoid mechanical jamming.
[0029] Working principle and implementation: The converter movable fume hood lifting mechanism is based on the converter platform 1. The core drive system consists of a hydraulic cylinder 14 and a hydraulic drive unit 13 inside the sealed chamber 5. The hydraulic cylinder 14 drives the first rotating wheel 15 to rotate through the insert rod 16. With the transmission of the chain 6 and the second rotating wheel 18, the movable sleeve body 25 and the converter body 3 are vertically lifted and lowered. The ceramic coating 17 on the outer surface of the sealed chamber 5 can resist high temperature corrosion, and the bottom slot provides a movement channel for the chain 6. In the guide and positioning structure, the horizontal plates 2 on both sides of the movable sleeve body 25 are inserted into the slide grooves 4 of the converter platform 1. Through the cooperation of the positioning block 12, the spherical bearing 9 and the limiting shaft 8, the radial displacement of the horizontal plate 2 is limited, allowing it to move vertically. The wave-shaped spring steel sheet 11 in the slot 10 at the front end of the horizontal plate 2 provides elastic buffering. The reserved ±20mm thermal expansion gap can adapt to temperature changes and ensure smooth lifting and lowering. In the temperature control and locking system, the fixing component 7 is installed on the platform through the fixing block 23. The rear temperature sensor 26 monitors the temperature in real time. The internal telescopic rod 19 is covered by a spring 20. The front insertion block 22 cooperates with the inner horizontal plate 2 of the slide 4 to achieve position locking. The roller 21 reduces internal friction. When the temperature is abnormal, the sensor triggers a signal, and the telescopic rod 19 drives the insertion block 22 to move under the action of the spring. With the help of the limit rod 24, it brakes in an emergency. The elastic locking structure can adapt to thermal expansion and contraction and avoid mechanical jamming. The whole mechanism realizes the smooth lifting and safe operation of the converter's movable fume hood through hydraulic drive, chain drive, multiple limit and temperature control locking.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A converter movable hood lifting mechanism comprising: A converter platform (1) is characterized in that: a sealed chamber (5) is installed at the rear top of the outer surface of the converter platform (1), the outer surface of the sealed chamber (5) is provided with a ceramic coating (17), and a slot is opened at the bottom of the inner part of the sealed chamber (5). A hydraulic cylinder (14) is installed in the front part of the inner part of the sealed chamber (5), a hydraulic drive unit (13) is electrically installed at the top of the outer surface of the hydraulic cylinder (14), a plug rod (16) is fixedly installed at the output end of the hydraulic cylinder (14), a first rotating wheel (15) is inserted into the shaft surface of the plug rod (16), a chain (6) is sleeved on the outer surface of the first rotating wheel (15), and the outer surface of the chain (6) extends to the outside through the slot at the bottom of the sealed chamber (5), and a second rotating wheel (18) is sleeved at the bottom of the outer surface of the chain (6).
2. A movable hood lifting mechanism for a converter according to claim 1, characterized in that: A rod (16) is inserted into the center of the shaft surface of the second rotor (18). A movable sleeve body (25) is fixedly installed at the bottom end of the shaft surface of the rod (16). A converter body (3) is fixedly installed at the bottom end of the shaft surface of the movable sleeve body (25).
3. A movable hood lifting mechanism for a converter according to claim 2, characterized in that: The movable sleeve body (25) has horizontal plates (2) installed on the left and right sides of the shaft surface. The outer surface of the converter platform (1) has a sliding groove (4) at the front section of the horizontal plate (2). Positioning blocks (12) are fixedly installed on both sides of the front section of the outer surface of the horizontal plate (2).
4. A movable hood lifting mechanism for a converter as claimed in claim 3, characterized in that: A spherical bearing (9) is installed at the top of the outer surface of the positioning block (12). A limiting shaft (8) is inserted into the inside of the slide groove (4), and the bottom end of the shaft surface of the limiting shaft (8) penetrates the outer surface of the horizontal plate (2) and the spherical bearing (9).
5. A movable hood lifting mechanism for a converter as claimed in claim 3, characterized in that: The front end of the outer surface of the horizontal plate (2) is provided with a slot (10), and a wave-shaped spring steel sheet (11) is fixedly installed inside the slot (10). A fastener (7) is provided on the outer surface of the converter platform (1) facing the slide (4).
6. A movable hood lifting mechanism for a converter as claimed in claim 5, characterized in that: A fixing block (23) is fixedly installed at the bottom of the outer surface of the fixing member (7), and a converter platform (1) is inserted into the bottom of the outer surface of the fixing block (23). A temperature sensor (26) is electrically installed at the rear end of the outer surface of the fixing member (7).
7. A movable hood lifting mechanism for a converter as claimed in claim 5, characterized in that: The internal rear end of the fixing member (7) is provided with a telescopic rod (19), and the external surface of the shaft of the telescopic rod (19) is provided with a spring (20). The interior of the fixing member (7) is provided with several sets of rollers (21) at the bottom of the outer surface of the telescopic rod (19) and the spring (20). The front end of the outer surface of the telescopic rod (19) is provided with an insert (22). The rear end of the outer surface of the insert (22) is fixedly installed with a limit rod (24), and the front end of the outer surface of the insert (22) extends through the outer surface of the converter platform (1) to the interior of the chute (4).