A fall-preventing coke barrier car door machine device

Abstract

The utility model provides a kind of anti-falling type coke guide car door taking machine device, including upper and lower trolley, rotating frame being installed between the upper and lower trolley, lifting hook frame being installed in the rotating frame, and the synchronous shaft for ensuring that upper and lower trolley moves synchronously;It further includes: first anti-falling mechanism, the first anti-falling mechanism is arranged between the lifting hook frame and the rotating frame, for when the main support structure of the lifting hook frame fails, the lifting hook frame is assisted to support, prevent its falling;And second anti-falling mechanism, the second anti-falling mechanism is arranged at the upper rotating shaft of the rotating frame, for when the lower support of the rotating frame fails in the maintenance process, the rotating frame is suspended to support, prevent its falling.The utility model aims at solving the problems, such as the maintenance of door taking machine synchronous shaft is complicated, lifting hook frame and rotating frame exist falling risk etc. in the prior art, to improve the safety and reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of coke oven machinery and equipment, specifically to a fall-proof coke quenching car door retrieval device. Background Technology

[0002] The coke quenching car is a key piece of equipment in coke oven production. Its door retrieving mechanism is responsible for removing and installing the high-temperature carbonization chamber door. Existing door retrieving mechanisms have been operating for extended periods in harsh environments with high temperatures and high dust levels, revealing numerous design flaws and safety hazards. These are mainly reflected in: (1) Frequent failures and difficult maintenance of synchronous shaft: The synchronous operation of the upper and lower trolleys of the door retrieval machine depends on the synchronous shaft and its gear rack transmission. The harsh on-site environment leads to the failure of lubrication of open gears and increased wear, resulting in frequent "tooth skipping" failures, which affects the positioning accuracy of the door retrieval machine. The traditional maintenance method requires adjusting the synchronous shaft by welding steel plates to fix it, and then cutting it off with gas cutting after adjustment. This process is time-consuming, labor-intensive, and costly. Moreover, repeated welding and cutting will cause thermal damage to the synchronous shaft body and shorten its service life. (2) The lifting frame is at risk of falling: The lifting frame is connected to the rotating frame through the lifting cylinder seat. The cylinder seat is the key stress point that bears the weight of the lifting frame and the furnace door. Due to design defects, material fatigue or improper operation, the cylinder seat is prone to cracking. If the cylinder seat suddenly breaks when the furnace door weighing 7 tons is lifted, the lifting frame weighing about 5 tons will fall together with the furnace door. The total weight of more than 10 tons will not only seriously damage the equipment, but also cause the high temperature of about 1000℃ in the carbonization chamber to be directly radiated out, posing a great safety threat to the on-site repair personnel and causing a long-term interruption of production. (3) Safety hazards exist in the maintenance process: When replacing components such as the rotating frame, temporary devices such as jacks or hydraulic cylinders are required to support the lifting hook frame and the upper part of the rotating frame, which weigh about 10 tons. If hydraulic leakage or support failure occurs, the entire upper structure will suddenly fall, which can easily cause major equipment damage and personnel casualties.

[0003] Therefore, providing a door retrieval device that can effectively solve the problems of cumbersome maintenance of the aforementioned synchronous shaft and the serious risk of falling during operation and maintenance is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a fall-proof coke chute retrieval device.

[0005] The specific technical solution is as follows: A fall-prevention coke chock retrieval device includes an upper trolley and a lower trolley, a fixed frame and a rotating frame installed between the upper and lower trolleys, a lifting hook frame installed on the rotating frame, and a synchronous shaft for ensuring synchronous movement of the upper and lower trolleys. It also includes: A first fall protection mechanism, disposed between the hook frame and the rotating frame, is used to provide auxiliary support to the hook frame to prevent it from falling when the main support structure of the hook frame fails; and The second anti-fall mechanism is located at the upper rotation axis of the rotating frame and is used to suspend and support the rotating frame to prevent it from falling when the lower support of the rotating frame fails during maintenance.

[0006] Optionally, the first fall protection mechanism includes at least one fall protection shaft fixed to the upper part of the hook frame, and an arc-shaped track plate fixed to the rotating frame and cooperating with the fall protection shaft; the arc-shaped track plate has an arc-shaped track for the fall protection shaft to slide therein, and the upper edge of the arc-shaped track forms a limiting surface for the fall protection shaft.

[0007] Optionally, the lifting hook frame is mounted on the rotating frame via a lifting hook cylinder seat, and the anti-fall shaft is located above the lifting hook cylinder seat; when the lifting hook cylinder seat cracks or is damaged, the anti-fall shaft contacts the upper edge of the arc-shaped track, transferring the weight of the lifting hook frame to the rotating frame.

[0008] Optionally, the second anti-fall mechanism includes a stepped shaft design for the upper rotating shaft of the rotating frame, and a support plate and nut installed on the top of the stepped shaft; the upper rotating shaft extends upward after passing through the bearing position of the upper trolley, the diameter of the support plate is larger than the inner diameter of the bearing position, and it is fastened to the top of the stepped shaft by the nut.

[0009] Optionally, the stepped shaft design of the upper rotating shaft includes a bearing mating section, a transition section, and a threaded section from bottom to top; the support plate is mounted on the transition section and fixed by a nut locked on the threaded section.

[0010] Optionally, a synchronous shaft locking mechanism is also included, which is used to mechanically lock the synchronous shaft when it is adjusted; the locking mechanism includes at least one brake lug disposed near the synchronous shaft bearing housing, and a stop hole correspondingly opened in the fixing frame, and the rotation of the synchronous shaft is restricted by inserting a pin into the brake lug and the stop hole.

[0011] Optionally, the lifting hook cylinder seat can be made stronger by widening the stress-bearing area and adding reinforcing ribs.

[0012] Optionally, a sealing element is provided at the top of the upper rotating shaft, and the sealing element adopts a contact felt seal to prevent dust from entering the bearing.

[0013] Optionally, the arc-shaped track design allows the hook frame to tilt normally within the range of 0-30 degrees without interfering with the fall arrestor shaft.

[0014] Optionally, the brake lug is welded to the bearing housing of the synchronous shaft, the stop hole is formed on the fixing frame, and the pin is a detachable pin used to pass through the brake lug and the stop hole to achieve locking.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Safety is significantly improved: The first and second fall arrest mechanisms provide dual mechanical protection from both operational and maintenance perspectives, fundamentally preventing heavy objects from falling due to the breakage of key components or failure of supports, and effectively ensuring the safety of personnel and equipment.

[0016] Maintenance efficiency is greatly improved: The innovative synchronous shaft locking mechanism simplifies the welding and cutting process that used to take several hours to a pin insertion and removal operation that takes only minutes. The average repair time for a single fault is reduced by 1 hour, significantly reducing equipment downtime.

[0017] Stable production and reduced costs: Effectively avoids prolonged production interruptions and high repair costs caused by equipment falls, resulting in significant annual profit increases. At the same time, simplified maintenance methods reduce maintenance costs and extend the lifespan of the synchronous shaft.

[0018] Improved working environment: It avoids maintenance personnel from carrying out long-term emergency repairs and dangerous welding operations in high-temperature and high-dust environments, reducing occupational health risks.

[0019] Simple structure and economical and practical: The improvements in this solution are all based on the original equipment, with low modification costs, easy implementation, and high value for promotion and application. Attached Figure Description

[0020] Figure 1 This is a front structural diagram of one embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 3 This is a schematic diagram illustrating the structure of the upper rotating shaft in one embodiment of this utility model.

[0021] In the diagram: 1. Upper trolley; 100. Upper trolley guide roller; 101. Upper track; 102. Lower track; 11. Bearing; 2. Lower trolley; 200. Lower trolley guide roller; 3. Fixed frame; 31. Synchronous shaft; 32. Gear; 4. Rotating frame; 40. Arc-shaped track plate; 41. Upper rotating shaft; 411. Bearing mating section; 412. Transition section; 413. Threaded section; 42. Support plate; 43. Nut; 44. Sealing element; 5. Lifting hook frame; 51. Lifting hook cylinder seat; 6. Anti-fall shaft; 7. Brake lug. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0025] Please see Figures 1 to 3 This utility model provides a fall-prevention coke quenching car door retrieval device, which is fixed to an upper track 101 at the top and a lower track 102 at the bottom of the coke quenching car. Its overall structure includes: an upper trolley 1 and a lower trolley 2 that can roll on the tracks; a fixed frame 3 that rigidly connects the upper and lower trolleys 2 via flanges; a synchronous shaft 31 vertically mounted on the fixed frame 3 to ensure synchronous movement of the upper and lower trolleys 2; a rotating frame 4 installed between the upper and lower trolleys 2 to achieve rotational movement; and a lifting hook frame 5 installed at the front end of the rotating frame 4 for retrieving the furnace door; it also includes: A first anti-fall mechanism is disposed between the lifting hook frame 5 and the rotating frame 4, and is used to provide auxiliary support for the lifting hook frame 5 to prevent it from falling when the main support structure of the lifting hook frame 5 fails; and The second anti-fall mechanism is located at the upper rotation shaft 41 of the rotating frame 4. It is used to suspend and support the rotating frame 4 to prevent it from falling when the lower support of the rotating frame 4 fails during maintenance.

[0026] Both the upper and lower tracks 102 are U-shaped, fixed to the top of the coke quenching car and beside the coke guide grid, respectively, providing guidance for the linear movement of the device. The upper trolley 1 and the lower trolley 2 roll within the tracks via guide rollers on the upper trolley 1 and the lower trolley 2. The fixed frame 3 is a square column steel structure that rigidly connects the upper and lower trolleys 2 together. The synchronous shaft 31 is vertically mounted on the fixed frame 3, and the gears 32 at both ends of the shaft mesh with the upper and lower gear racks fixed on the coke quenching car, respectively, ensuring strict synchronization between the upper and lower trolleys during movement and maintaining the vertical posture of the device.

[0027] Please see Figure 1 and Figure 2 The lifting frame 5 is mounted on the rotating frame 4 via the lifting cylinder seat 51, and this connection point is the main load-bearing structure. To prevent failure at this point, the first anti-fall mechanism of this embodiment specifically includes anti-fall shafts 6 with a diameter of 30mm on both sides of the upper part of the lifting frame 5. Correspondingly, two arc-shaped track plates 40 with a thickness of 20mm are welded and fixed on the rotating frame 4. The arc-shaped track plates 40 have arc-shaped tracks that cooperate with the anti-fall shafts 6, and their curvature matches the movement trajectory of the lifting frame 5 when tilted. During normal door retrieval operations, the lifting frame 5 can tilt within a range of 0-30 degrees under the drive of the tilting cylinder. At this time, the anti-fall shafts 6 slide freely within the arc-shaped tracks without interference. Once the lifting cylinder seat 51 breaks due to fatigue or overload, the lifting frame 5 will sink instantly, and the anti-fall shafts 6 on it will be immediately "caught" and caught by the upper edge of the arc-shaped tracks. In this way, the entire weight of the lifting frame 5 and the furnace door is transferred to the rotating frame 4 through the anti-fall shaft 6 and the arc-shaped track plate 40, forming a reliable mechanical connection that effectively prevents falls. Operators can safely return the equipment to the maintenance area for handling, avoiding the risks of production interruption and high-temperature emergency repairs.

[0028] Please see Figure 3 To address safety concerns during maintenance, this embodiment incorporates a second anti-fall mechanism on the upper rotating shaft 41. The original shaft is modified into an extended stepped shaft, consisting of, from bottom to top: a bearing 11 mating section, a slightly larger diameter transition section 412, and an M45 threaded section 413 at the top. During installation, after the stepped shaft passes through the bearing 11 position on the upper trolley 1, a support plate 42 with an outer diameter of 80mm and a thickness of 20mm is fitted onto the transition section 412 at the top. Finally, an M45 nut is used to lock it onto the threaded section 413. When maintenance requires disassembling the lower rotating frame 4, even if the temporary support below (such as a jack) fails due to hydraulic leakage, the 10-ton rotating frame 4 and lifting hook frame 5 will not fall. Because its entire weight is lifted upwards via the stepped axis and firmly "held" by the large-diameter support plate 42 on the sturdy structure of the upper trolley 1, this purely mechanical safety design fundamentally eliminates the risk of falling during maintenance and greatly protects the lives of maintenance personnel.

[0029] Please see Figures 1-2 To simplify the maintenance of the synchronous shaft 31, this embodiment incorporates a locking mechanism for the synchronous shaft 31. Specifically, a brake lug 7 is welded approximately 200mm above the lower bearing 11 seat of the synchronous shaft 31. Simultaneously, a stop hole is provided at the corresponding position on the fixing bracket 3. When a tooth skipping fault occurs and the verticality of the synchronous shaft 31 needs adjustment, maintenance personnel no longer need to perform welding and cutting. They can simply insert two specially designed pins into the brake lug 7 and the stop hole to reliably lock the synchronous shaft 31, preventing its rotation. After adjustment, the pins can be removed to restore its position. This design greatly simplifies the cumbersome maintenance process, reducing maintenance time by approximately one hour and avoiding material damage and stress concentration caused by repeated welding to the synchronous shaft 31 body, thus extending its service life.

[0030] In summary, this utility model, by adding multiple mechanical anti-fall safety mechanisms and optimizing the maintenance operation design, systematically solves the major safety hazards existing in the operation and maintenance of the existing coke quenching car door retrieval machine, while significantly improving maintenance efficiency and reducing operating costs, providing strong equipment support for the safe and efficient operation of coking production.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fall-prevention coke chock retrieval device, comprising an upper trolley and a lower trolley, a fixed frame and a rotating frame installed between the upper and lower trolleys, a lifting hook frame installed on the rotating frame, and a synchronous shaft for ensuring synchronous movement of the upper and lower trolleys, characterized in that, Also includes: The first anti-fall mechanism is disposed between the hook frame and the rotating frame, and is used to provide auxiliary support for the hook frame to prevent it from falling when the main support structure of the hook frame fails. as well as The second anti-fall mechanism is located at the upper rotation axis of the rotating frame and is used to suspend and support the rotating frame to prevent it from falling when the lower support of the rotating frame fails during maintenance.

2. The anti-fall type coke chock car gantry machine device according to claim 1, characterized in that, The first fall protection mechanism includes at least one fall protection shaft fixed to the upper part of the hook frame, and an arc-shaped track plate fixed to the rotating frame and cooperating with the fall protection shaft; the arc-shaped track plate has an arc-shaped track for the fall protection shaft to slide therein, and the upper edge of the arc-shaped track forms a limiting surface for the fall protection shaft.

3. The anti-fall type coke chock car gantry retrieving device according to claim 2, characterized in that, The lifting hook frame is mounted on the rotating frame via a lifting hook cylinder seat, and the anti-fall shaft is located above the lifting hook cylinder seat. When the lifting hook cylinder seat cracks or is damaged, the anti-fall shaft contacts the upper edge of the arc-shaped track, transferring the weight of the lifting hook frame to the rotating frame.

4. The anti-fall type coke chock car gantry machine device according to claim 1, characterized in that, The second fall arrest mechanism includes a stepped shaft design for the upper rotating shaft of the rotating frame, and a support plate and nut installed on the top of the stepped shaft; the upper rotating shaft extends upward after passing through the bearing position of the upper trolley, the diameter of the support plate is larger than the inner diameter of the bearing position, and is fastened to the top of the stepped shaft by the nut.

5. The anti-fall type coke chock car gantry machine device according to claim 4, characterized in that, The stepped shaft design of the upper rotating shaft includes a bearing mating section, a transition section, and a threaded section from bottom to top; the support plate is installed on the transition section and fixed by a nut locked on the threaded section.

6. The anti-fall type coke chock car gantry machine device according to claim 1, characterized in that, It also includes a synchronous shaft locking mechanism for mechanically locking the synchronous shaft when adjusting it; the locking mechanism includes at least one brake lug disposed near the synchronous shaft bearing housing, and a stop hole correspondingly opened in the fixing frame, and the rotation of the synchronous shaft is restricted by inserting a pin into the brake lug and the stop hole.

7. The anti-fall type coke chock car gantry machine device according to claim 3, characterized in that, The lifting hook cylinder seat improves its structural strength by widening the stress-bearing area and adding reinforcing ribs.

8. The anti-fall type coke chock car gantry machine device according to claim 4, characterized in that, A sealing element is provided at the top of the upper rotating shaft, and the sealing element adopts a contact felt seal to prevent dust from entering the bearing.

9. The anti-fall type coke chock car gantry retrieving device according to claim 2, characterized in that, The arc-shaped track design allows the lifting hook frame to tilt normally within the range of 0-30 degrees without interfering with the fall arrest axis.

10. The anti-fall type coke chock car gantry machine device according to claim 6, characterized in that, The brake lug is welded to the bearing seat of the synchronous shaft, the stop hole is opened on the fixing frame, and the pin is a detachable pin used to pass through the brake lug and the stop hole to achieve locking.

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