Hoisting opening safety cover plate mechanism for blast furnace ore tank production

Abstract

The utility model relates to the technical field of hoisting opening cover plates, in particular to a hoisting opening safety cover plate mechanism for blast furnace ore tank production, which comprises a bearing frame, two groups of cover plates are mounted in the bearing frame, each group of cover plates is rotatably connected with the bearing frame, a transmission shell is fixed on one side wall of the bearing frame, and a sliding chute is formed in the transmission shell. A lifting plate is arranged in the transmission shell, two linkage rods are hinged to the two sides of the bottom end of the lifting plate respectively, the other ends of the linkage rods are hinged to the screw blocks, two gear boxes are symmetrically arranged in the sliding groove, and main gears and auxiliary gears which are vertically meshed are arranged in the gear boxes; the two ends of the two-way screw are fixedly connected with the main gear, the middle of the auxiliary gear is fixedly connected with one end of the transmission shaft, and the other end of the transmission shaft is fixedly connected with the side, rotationally connected with the bearing frame, of the cover plate. The lifting plate and the cover plate form a linkage mechanism, simultaneous opening or closing is achieved, and the safety performance of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting port cover technology, specifically to a safety cover mechanism for lifting ports used in blast furnace ore bin production. Background Technology

[0002] As a core piece of equipment in the metallurgical industry, the blast furnace's charging system is a crucial element in ensuring its normal operation. The ore bin is an important component of the blast furnace charging system, primarily responsible for storing ore raw materials, ensuring a sufficient and stable supply of raw materials, and guaranteeing the smooth progress of the smelting process.

[0003] When large components inside the blast furnace ore bins need to be replaced, they are typically lifted from a height through the lifting port using a monorail crane or similar method. To ensure safety and a clean production environment, the lifting port needs to be sealed with a cover when not in use, and the cover needs to be opened to expose it for easy equipment lifting.

[0004] The existing safety cover mechanism for the hoisting opening in blast furnace ore bin production mainly uses a flip-top cover to open and close the hoisting opening. To improve safety, a lifting guardrail is usually installed on one side of the cover. The lifting guardrail, combined with two sets of cover plates, can enclose three sides of the hoisting opening. The drawback of this mechanism is that the lifting guardrail is mostly manually adjusted, resulting in lower safety.

[0005] Therefore, there is an urgent need for a safety cover plate mechanism for the hoisting opening of blast furnace ore bins to solve the above problems. Utility Model Content

[0006] To address the technical problem of low safety in existing technologies that combine lifting guardrails with two sets of cover plates to enclose three sides of the hoisting opening due to non-standard use of the lifting guardrails during production, this utility model provides a safety cover plate mechanism for hoisting openings in blast furnace ore bin production.

[0007] The technical solution of this utility model is as follows:

[0008] A safety cover mechanism for lifting openings in blast furnace ore bin production includes a load-bearing frame. Two sets of cover plates are symmetrically installed within the load-bearing frame, each set of cover plates being rotatably connected to the load-bearing frame. A transmission housing is fixed to one side wall of the load-bearing frame. A slide groove is provided inside the transmission housing. A bidirectional screw is rotatably installed in the slide groove. One end of the bidirectional screw is connected to a drive motor. Two sets of screw blocks are symmetrically installed on the bidirectional screw. A lifting plate is provided inside the transmission housing. The bottom ends of the lifting plate are hinged to the ends of a linkage rod on both sides. The two linkage rods are arranged crosswise and rotatably connected at the intersection. The other ends of the two linkage rods are respectively hinged to a set of screw blocks. Two gearboxes are symmetrically installed in the slide groove. The gearboxes include a vertically meshing main gear and a secondary gear. The two ends of the bidirectional screw pass through one gearbox and are respectively fixedly connected to the main gear inside the gearbox. The middle part of the secondary gear is fixedly connected to one end of a drive shaft. The other end of the drive shaft is rotatably connected to the cover plate and fixedly connected to one side of the load-bearing frame.

[0009] Furthermore, the transmission housing is fixed to the side wall of the load-bearing frame by bolts.

[0010] Furthermore, the specifications of the screw block are matched with the specifications of the slide groove.

[0011] Furthermore, the drive motor is located on the outside of the support frame.

[0012] Furthermore, both the main gear and the auxiliary gear are bevel gears.

[0013] Furthermore, a fixed frame is welded to the bottom of the load-bearing frame, and fixed holes are opened at the four corners of the upper end of the fixed frame. The fixed holes on the fixed frame facilitate fixing the mechanism at the hoisting port.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes a bidirectional screw, screw block, linkage rod, lifting plate, main gear, secondary gear, transmission shaft, and drive motor. During use, when the lifting port needs to be opened via the cover plate, the drive motor rotates the bidirectional screw. The bidirectional screw, on one hand, drives the secondary gear via the main gear, which in turn drives the cover plate via the transmission shaft, thus automatically opening the lifting port. On the other hand, the bidirectional screw causes the screw block to move under the action of the screw thread. During the movement of the screw block, the linkage rod pushes the lifting plate to move, forming a lifting guardrail. This, along with two sets of cover plates, encloses the three sides of the lifting port. This invention creates a linkage mechanism between the lifting plate and the cover plates, enabling simultaneous opening or closing and improving the safety performance of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the safety cover plate mechanism for the hoisting opening of the blast furnace ore bin in Example 1.

[0018] Figure 2 This is a schematic diagram of the internal structure of the transmission housing in Example 1.

[0019] Figure 3 This is a schematic diagram of the internal structure of the gearbox in Example 1.

[0020] In the diagram, 1-bearing frame, 2-fixed frame, 3-cover plate, 4-transmission housing, 5-lifting plate, 6-drive motor, 7-bidirectional screw, 8-screw block, 9-slide groove, 10-linkage rod, 11-gearbox, 12-main gear, 13-secondary gear, 14-drive shaft. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] Example 1

[0023] A safety cover mechanism for a hoisting opening in blast furnace ore bin production includes a support frame 1. Two sets of cover plates 3 are symmetrically installed within the support frame 1. One side of each set of cover plates 3 is rotatably connected to the support frame 1. A transmission housing 4 is bolted to one side wall of the support frame 1. A sliding groove 9 is provided inside the transmission housing 4. A bidirectional screw 7 is rotatably installed within the sliding groove 9. One end of the bidirectional screw 7 is connected to a drive motor 6, which is located on the outside of the support frame 1. The drive motor 6 can drive the bidirectional screw 7 to rotate. Two sets of screw blocks 8 are symmetrically screwed onto the bidirectional screw 7, and the specifications of the screw blocks 8 match the specifications of the sliding groove 9. During the rotation of the bidirectional screw 7, the two sets of screw blocks 8 move closer to each other under the limiting action of the screw threads and the sliding groove 9. Or they are far apart. A lifting plate 5 is provided in the transmission housing 4. The bottom two sides of the lifting plate 5 are hinged to the ends of a linkage rod 10. The two linkage rods 10 are arranged crosswise and rotatably connected at the intersection. The other ends of the two linkage rods 10 are respectively hinged to a set of screw blocks 8. Two gearboxes 11 are symmetrically installed in the slide groove 9. The gearbox 11 includes a vertically meshing main gear 12 and a secondary gear 13. Both the main gear 12 and the secondary gear 13 are bevel gears. The two ends of the bidirectional screw 7 pass through a gearbox 11 and are respectively fixedly connected to the main gear 12 in the gearbox 11. The middle part of the secondary gear 13 is fixedly connected to one end of the transmission shaft 14. The other end of the transmission shaft 14 is rotatably connected to one side of the load-bearing frame of the cover plate 3. For example, the inner side of the support frame 1 is provided with a rotating groove, through which the drive shaft 14 passes. The part of the drive shaft 14 protruding from the opening of the rotating groove is fixedly connected to the side of the cover plate 3. The opening angle of the rotating groove can be 90°, and the corresponding movement angle of the cover plate is also 90°. When the cover plate is closed, the cover plate 3 contacts the lowest end of the opening of the rotating groove. When the cover plate 3 is rotated open under the drive of the drive shaft 14, the cover plate 3 approaches the highest point of the opening of the rotating groove. The support frame 1 can also be rotatably connected to the cover plate 3 via a hinge. The end of the cover plate 3 connected to the support frame 1 is fixedly connected to the drive shaft 14. When the drive shaft 14 rotates, the connection side of the cover plate 3 to the support frame 1 also rotates. A fixed frame 2 is welded to the bottom of the support frame 1. Fixed holes are provided at the four corners of the upper end of the fixed frame 2. The fixed holes on the fixed frame 2 facilitate fixing the mechanism of this embodiment at the lifting port.

[0024] In use, the mechanism of this embodiment is first fixed to the lifting port through the fixing holes on the fixing frame 2, and then connected to an external power source. When idle, the cover plate 3 seals the lifting port. When it is necessary to lift the equipment through the lifting port, the drive motor 6 is controlled to drive the bidirectional screw 7 to rotate. The bidirectional screw 7 drives the auxiliary gear 13 to rotate through the main gear 12, and the auxiliary gear 13 drives the cover plate 3 to rotate through the transmission shaft 14, thereby realizing the automatic opening of the lifting port. On the other hand, the screw block 8 moves under the action of the screw thread. During the movement of the screw block 8, the linkage rod 10 pushes the lifting plate 5 to move. The linkage rod 10 and the lifting plate 5 form a guardrail, and together with the two sets of cover plates 3, they surround the three sides of the lifting port. The mechanism of this embodiment can make the lifting plate 5 and the cover plate 3 form a linkage mechanism, realizing simultaneous opening or closing, improving the safety performance of the device.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hoistway safety cover mechanism for a blast furnace stock chute production, comprising a load bearing frame, characterized in that, Two sets of cover plates are symmetrically installed inside the load-bearing frame. Each set of cover plates is rotatably connected to the load-bearing frame. A transmission housing is fixed on one side wall of the load-bearing frame. A slide groove is opened inside the transmission housing. A bidirectional screw is rotatably installed in the slide groove. One end of the bidirectional screw is connected to a drive motor. Two sets of screw blocks are symmetrically installed on the bidirectional screw. A lifting plate is set inside the transmission housing. The bottom of the lifting plate is hinged to the end of a linkage rod on each side. The two linkage rods are arranged crosswise and rotatably connected at the intersection. The other ends of the two linkage rods are respectively hinged to a set of screw blocks. Two gearboxes are symmetrically installed in the slide groove. The gearboxes include a vertically meshing main gear and a secondary gear. The two ends of the bidirectional screw pass through a gearbox and are fixedly connected to the main gear inside the gearbox. The middle of the secondary gear is fixedly connected to one end of the transmission shaft. The other end of the transmission shaft is rotatably connected to the cover plate and fixedly connected to one side of the load-bearing frame.

2. A safety cover mechanism for a hoistway of a blast furnace stock trough production according to claim 1, characterized in that, The transmission housing is fixed to the side wall of the load-bearing frame by bolts.

3. A safety cover mechanism for a hoistway of a blast furnace stockhouse according to claim 1, characterized in that, The specifications of the screw block match the specifications of the slide groove.

4. A safety cover mechanism for a hoistway of a blast furnace stockhouse according to claim 1, characterized in that, The drive motor is located on the outside of the support frame.

5. A safety cover mechanism for a hoistway of a blast furnace stockhouse according to claim 1, characterized in that, Both the main gear and the auxiliary gear are bevel gears.

6. A safety cover mechanism for a hoistway of a blast furnace stockhouse according to claim 1, characterized in that, A fixed frame is welded to the bottom of the load-bearing frame, and fixing holes are opened at the four corners of the upper end of the fixed frame.

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