Gas-fired heating furnace rear material feeding mechanism

Abstract

This utility model relates to the field of material pulling technology and discloses a material pulling mechanism at the rear end of a gas-fired heating furnace. It includes a material pulling machine body located outside the discharge end of the heating furnace body, a chain connected inside the material pulling machine body, and a locking hook connected to the chain. Protective cover structures are fixedly installed on both sides of the material pulling machine body frame. The protective cover structures have openings at both ends. Two door panels are installed on the outer wall of the opening at the end of the protective cover structure away from the heating furnace body. The two door panels are hinged to the outer wall of the protective cover structure via spring hinges. A clearance groove is provided below the opposite surface of the two door panels to allow the locking hook to move. By setting up the protective cover structure, flames that escape when the furnace door is opened can be effectively blocked, preventing safety hazards to operators. The hinged door panels not only provide a sealing function but can also be opened to both sides when needed, facilitating operation and maintenance, and balancing safety and practicality.

Description

Technical Field

[0001] This utility model relates to the field of material pulling technology, specifically to a material pulling mechanism at the rear end of a gas-fired heating furnace. Background Technology

[0002] During forging, a gas-fired heating furnace is used to heat the metal billet (such as steel, aluminum alloy, etc.) to a suitable forging temperature range (for example, steel parts typically need to reach 1100℃-1250℃), placing it in a highly ductile state, reducing deformation resistance, and facilitating subsequent forging, rolling, and other processes. After the metal billet has been heated, a pulling machine is used to pull the tray containing the billet out of the heating furnace.

[0003] As one of the pieces of equipment in the Benefit series carburizing and quenching multi-purpose furnace production line, the material puller consists of a frame, drive mechanism, chain, snap-fit ​​end, and rollers. During operation, after the furnace door is opened, the drive mechanism drives the chain and the snap-fit ​​end at the front end forward, extending it into the furnace. Then, the snap-fit ​​end snaps into the material tray, and the material tray is pulled out of the furnace through a reverse motion.

[0004] However, the moment the furnace door is opened, flames burst out, causing intense heat radiation to the surrounding operators and resulting in a harsh working environment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rear-end material pulling mechanism for a gas-fired heating furnace, thereby improving the comfort of the workers' operating environment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material pulling mechanism at the rear end of a gas-fired heating furnace, comprising a material pulling machine body located outside the discharge end of the heating furnace body, a chain connected inside the material pulling machine body, and a snap hook connected to the chain. A protective cover structure is fixedly installed on both sides of the frame of the material pulling machine body. The two ends of the protective cover structure are open. Two door panels are provided on the outer wall of the opening at the end of the protective cover structure away from the heating furnace body. The two door panels are hinged to the outer wall of the protective cover structure by spring hinges. A clearance groove for accommodating the snap hook is provided below the opposite surface of the two door panels.

[0007] Furthermore, a rotating plate is rotatably connected inside the relief groove, and the top of the rotating plate is connected to the inner wall of the relief groove via a rotating shaft.

[0008] Furthermore, the protective cover structure consists of a U-shaped wide cover, a U-shaped reinforcing cover, and a U-shaped outer cover. The two door panels are hinged to the outer wall of the U-shaped outer cover. The outer wall of the U-shaped wide cover is located at the discharge end of the heating furnace body. The outer walls of the U-shaped wide cover, the U-shaped reinforcing cover, and the U-shaped outer cover are connected to the material pulling machine body by fasteners.

[0009] Furthermore, the fasteners include side plates and bolts. The outer walls of the U-shaped wide cover, the U-shaped additional cover, and the U-shaped outer cover are all fixedly connected to the side plates. Multiple bolts are threaded onto the side plates, and the bolts pass through the side plates and are threadedly connected to the material pulling machine body.

[0010] Furthermore, the outer walls of the horizontal plates and the two vertical plates of the U-shaped wide cover, the U-shaped reinforcing cover, and the U-shaped outer cover are respectively fixedly connected with top pressure plates and side pressure plates. The top pressure plates and side pressure plates on the U-shaped wide cover are located on the side closer to the U-shaped reinforcing cover, the top pressure plates and side pressure plates on the U-shaped reinforcing cover are located on both sides, and the top pressure plates and side pressure plates on the U-shaped outer cover are located on the side closer to the U-shaped reinforcing cover. The outer wall of the protective cover structure is clamped with two U-shaped clamping plates, and the two U-shaped clamping plates are respectively clamped with the corresponding top pressure plates and side pressure plates.

[0011] Furthermore, a pull rod is fixedly connected to the outer wall of the U-shaped card plate.

[0012] Furthermore, several rollers are fixedly connected to the inner walls of the two door panels.

[0013] Furthermore, an extrusion plate is fixedly connected to one side of the outer wall of the U-shaped expansion cover and one side of the outer wall of the U-shaped outer cover, and an extrusion groove corresponding to the extrusion plate is opened on the inner wall of the U-shaped wide cover and the outer wall of the U-shaped expansion cover.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model, through its protective cover structure, effectively blocks flames that leap out when the furnace door is opened, preventing potential safety hazards to operators. The hinged door panel not only provides a sealing function but can also be opened to both sides when needed, facilitating operation and maintenance. Balancing safety and practicality, the structure is simple, easy to operate, and highly practical. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the material pulling machine body, protective cover structure, and snap-fit ​​hook of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of a partial state of the tensile testing machine body of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the protective cover structure and the U-shaped card plate of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the protective cover structure of this utility model in its unfolded state;

[0021] Figure 6 A three-dimensional structural diagram of the U-shaped structure with added cover and extrusion groove of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the door panel, clearance groove, and rotating plate of this utility model.

[0023] In the diagram: 1. Material pulling machine body; 2. Chain; 3. Protective cover structure; 31. U-shaped wide cover; 32. U-shaped reinforcing cover; 33. U-shaped outer cover; 4. Door panel; 5. Turning plate; 6. U-shaped clamping plate; 7. Pull rod; 8. Side plate; 9. Bolt; 10. Snap-fit ​​hook; 11. Roller; 12. Relief groove; 13. Top pressure plate; 14. Side pressure plate; 15. Extrusion plate; 16. Extrusion groove; 17. Heating furnace body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] like Figures 1 to 7 As shown, the rear-end material pulling mechanism of the gas-fired heating furnace includes a material pulling machine body 1 located outside the discharge end of the heating furnace body 17, a chain 2 connected inside the material pulling machine body 1, and a snap hook 10 connected to the chain 2. A protective cover structure 3 is fixedly installed on both sides of the frame of the material pulling machine body 1. The two ends of the protective cover structure 3 are open. Two door panels 4 are provided on the outer wall of the opening at the end of the protective cover structure 3 away from the heating furnace body 17. The two door panels 4 are hinged to the outer wall of the protective cover structure 3 by spring hinges. A clearance groove 12 for accommodating the snap hook 10 is provided below the opposite surface of the two door panels 4.

[0026] like Figures 1 to 7 As shown, in the present invention, when the lifting furnace door of the gas-fired furnace 17 is gradually opened, the chain 2 inside the lifting machine body 1 is driven by its own drive structure, which drives the locking hook 10 on the chain 2 forward. The locking hook 10 can move smoothly within the protective cover structure 3 directly through the relief groove 12 on the door panel 4. Since the flames after the lifting furnace door is opened are protected by the protective cover structure 3, the temporary storage area formed by the protective cover structure 3 can effectively ensure that the flames do not escape. The door panel 4, which is directly exposed to the outside, ensures that the protective cover structure 3 forms a sealed space before the material tray enters the material feeding machine body 1, preventing flames from being exposed. When the material tray enters the material feeding machine body 1, the material tray will gradually squeeze the door panel 4, and the door panel 4 will open to both sides under the action of the spring hinge. At this time, the lifting furnace door is also closed. The end of the protective cover structure 3 near the lifting furnace door can fit as closely as possible to the outer wall of the heating furnace body 17, thus preventing flames from escaping from the gap between them.

[0027] The material of the spring hinge should be heat-resistant, such as nickel-based high-temperature alloys, cobalt-based high-temperature alloys, etc.

[0028] The protective cover structure 3 and the door panel 4 can be made of an inner layer of ceramic fiber board and an outer layer of stainless steel, which not only prevents the flames from being exposed, but also blocks most of the radiant heat.

[0029] The protective cover structure 3 can protect the flames that burst out after the furnace door is opened, preventing the flames from escaping and causing safety hazards to workers. The hinged door panel 4 can not only block the flames, but also open in the opposite direction when needed.

[0030] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, a rotating plate 5 is rotatably connected inside the relief groove 12, and the top of the rotating plate 5 is connected to the inner wall of the relief groove 12 through a rotating shaft.

[0031] Specifically, in order to expose excessive radiant heat within the clearance groove 12, a rotating plate 5 is installed within the clearance groove 12. When the latching hook 10 is driven forward, the rotating plate 5 can be pushed inward to rotate. After the rotating plate 5 disengages from the latching hook 10, it automatically rotates down to reset. When the latching hook 10 moves backward with the tray, the door panel 4 opens first, and the rotating plate 5 is unaffected. When the latching hook 10 moves backward alone, the rotating plate 5 rotates outward and gradually separates from the latching hook 10.

[0032] It should be noted that the snap hook 10 is an existing mature technology, called a push head for material carts, which can be single hook or double hook, such as the double hook push head of the Aixelin brand. Therefore, the length of the two rotating plates 5 can be matched and set according to the length of the double hook push head to ensure that the double hook push head moves smoothly back and forth.

[0033] like Figure 4 and Figure 5 As shown, the protective cover structure 3 consists of a U-shaped wide cover 31, a U-shaped reinforcing cover 32, and a U-shaped outer cover 33. The two door panels 4 are hinged to the outer wall of the U-shaped outer cover 33. The outer wall of the U-shaped wide cover 31 is located at the discharge end of the heating furnace body 17. The outer walls of the U-shaped wide cover 31, the U-shaped reinforcing cover 32, and the U-shaped outer cover 33 are connected to the material pulling machine body 1 by fasteners.

[0034] Specifically, in order to make the protective cover structure 3 more adaptable to the length of different trays, the protective cover structure 3 can be modularized, that is, by using the U-shaped expansion cover 32 to increase or decrease, the overall length of the U-shaped wide cover 31 and the U-shaped outer cover 33 can be increased or decreased, thereby increasing or decreasing the length of the temporary storage room.

[0035] The width of the U-shaped wide cover 31 is greater than that of the U-shaped extension cover 32 and the U-shaped outer cover 33. Since the distance that the flames can shoot out is limited, making the U-shaped wide cover 31 wider can effectively prevent the flames from shooting out from the gaps.

[0036] like Figure 4 , Figure 5 and Figure 6 As shown, the fasteners include side plates 8 and bolts 9. The outer walls of the U-shaped wide cover 31, the U-shaped expansion cover 32 and the U-shaped outer cover 33 are all fixedly connected to the side plates 8. Multiple bolts 9 are threaded on the side plates 8, and the bolts 9 pass through the side plates 8 and are threaded to the material pulling machine body 1.

[0037] Specifically, using the side plate 8 and multiple bolts 9, the U-shaped wide cover 31, the U-shaped extension cover 32 and the U-shaped outer cover 33 can be fastened to the frame of the material pulling machine body 1 respectively.

[0038] like Figure 4 and Figure 5 As shown, the outer walls of the horizontal plates of the U-shaped wide cover 31, the U-shaped reinforcing cover 32, and the U-shaped outer cover 33 are respectively fixedly connected with top pressure plates 13 and side pressure plates 14. The top pressure plates 13 and side pressure plates 14 on the U-shaped wide cover 31 are located on the side closer to the U-shaped reinforcing cover 32. The top pressure plates 13 and side pressure plates 14 on the U-shaped reinforcing cover 32 are located on both sides. The top pressure plates 13 and side pressure plates 14 on the U-shaped outer cover 33 are located on the side closer to the U-shaped reinforcing cover 32. The outer wall of the protective cover structure 3 is fitted with two U-shaped clamping plates 6. The two U-shaped clamping plates 6 are respectively clamped with the corresponding top pressure plates 13 and side pressure plates 14.

[0039] Specifically, in order to ensure the tightness of the connection between the U-shaped wide cover 31, the U-shaped augmentation cover 32 and the U-shaped outer cover 33, the U-shaped clamping plate 6 is inserted into the two adjacent top pressure plates 13 and side pressure plates 14, so that the U-shaped clamping plate 6 can tightly clamp the two top pressure plates 13 and side pressure plates 14, reducing the probability of temperature leakage; if the number of U-shaped augmentation covers 32 increases, the number of U-shaped clamping plates 6 increases accordingly.

[0040] like Figures 1 to 5 As shown, a pull rod 7 is fixedly connected to the outer wall of the U-shaped clamping plate 6. The pull rod 7 facilitates the upward movement of the U-shaped clamping plate 6.

[0041] like Figure 3 and Figure 7 As shown, several rollers 11 are fixedly connected to the inner walls of the two door panels 4. The rollers 11 are designed to facilitate the smoothness of the door panels 4 being squeezed by the material tray and the workpiece.

[0042] like Figure 5 and Figure 6As shown, an extrusion plate 15 is fixedly connected to one side of the outer wall of the U-shaped expansion cover 32 and one side of the outer wall of the U-shaped outer cover 33. An extrusion groove 16 corresponding to the extrusion plate 15 is opened on the inner wall of the U-shaped wide cover 31 and the outer wall of the U-shaped expansion cover 32.

[0043] Specifically, when the U-shaped reinforcing cover 32 and the U-shaped outer cover 33 are fitted together, the extrusion plate 15 and the extrusion groove 16 are engaged. Similarly, when the U-shaped wide cover 31 and the U-shaped reinforcing cover 32 are fitted together, the corresponding extrusion plate 15 will also abut against the extrusion groove 16, thus further improving the tightness of the bonding surface.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A material pulling mechanism at the rear end of a gas-fired heating furnace, comprising a material pulling machine body (1) located outside the discharge end of the heating furnace body (17), a chain (2) connected inside the material pulling machine body (1), and a snap hook (10) connected to the chain (2), characterized in that, The main body (1) of the material pulling machine is fixedly installed with a protective cover structure (3) on both sides of the frame. The two ends of the protective cover structure (3) are open. Two door panels (4) are provided on the outer wall of the opening of the protective cover structure (3) away from the heating furnace body (17). The two door panels (4) are hinged to the outer wall of the protective cover structure (3) by spring hinges. A clearance groove (12) for clearance hook (10) is provided below the opposite surface of the two door panels (4).

2. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 1, characterized in that, A rotating plate (5) is rotatably connected inside the relief groove (12), and the top of the rotating plate (5) is connected to the inner wall of the relief groove (12) through a rotating shaft.

3. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 1 or 2, characterized in that, The protective cover structure (3) consists of a U-shaped wide cover (31), a U-shaped reinforcing cover (32) and a U-shaped outer cover (33). The two door panels (4) are hinged to the outer wall of the U-shaped outer cover (33). The outer wall of the U-shaped wide cover (31) is located at the discharge end of the heating furnace body (17). The outer walls of the U-shaped wide cover (31), the U-shaped reinforcing cover (32) and the U-shaped outer cover (33) are connected to the material pulling machine body (1) by fasteners.

4. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 3, characterized in that, The fasteners include side plates (8) and bolts (9). The outer walls of the U-shaped wide cover (31), the U-shaped expansion cover (32) and the U-shaped outer cover (33) are all fixedly connected with side plates (8). Multiple bolts (9) are threaded on the side plates (8). The bolts (9) pass through the side plates (8) and are threaded to the material pulling machine body (1).

5. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 3, characterized in that, The outer walls of the horizontal plates of the U-shaped wide cover (31), the U-shaped augmentation cover (32) and the U-shaped outer cover (33) are respectively fixedly connected with top pressure plates (13) and side pressure plates (14). The top pressure plates (13) and side pressure plates (14) on the U-shaped wide cover (31) are located on the side closer to the U-shaped augmentation cover (32). The top pressure plates (13) and side pressure plates (14) on the U-shaped augmentation cover (32) are located on both sides. The top pressure plates (13) and side pressure plates (14) on the U-shaped outer cover (33) are located on the side closer to the U-shaped augmentation cover (32). The outer wall of the protective cover structure (3) is fitted with two U-shaped clamping plates (6). The two U-shaped clamping plates (6) are respectively fitted with the corresponding top pressure plates (13) and side pressure plates (14).

6. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 4, characterized in that, The outer walls of the horizontal plates of the U-shaped wide cover (31), the U-shaped augmentation cover (32) and the U-shaped outer cover (33) are respectively fixedly connected with top pressure plates (13) and side pressure plates (14). The top pressure plates (13) and side pressure plates (14) on the U-shaped wide cover (31) are located on the side closer to the U-shaped augmentation cover (32). The top pressure plates (13) and side pressure plates (14) on the U-shaped augmentation cover (32) are located on both sides. The top pressure plates (13) and side pressure plates (14) on the U-shaped outer cover (33) are located on the side closer to the U-shaped augmentation cover (32). The outer wall of the protective cover structure (3) is fitted with two U-shaped clamping plates (6). The two U-shaped clamping plates (6) are respectively fitted with the corresponding top pressure plates (13) and side pressure plates (14).

7. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 5, characterized in that, A pull rod (7) is fixedly connected to the outer wall of the U-shaped card plate (6).

8. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 6, characterized in that, A pull rod (7) is fixedly connected to the outer wall of the U-shaped card plate (6).

9. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 1, 2, 4, 5, 6 or 7, characterized in that, Several rollers (11) are fixedly connected to the inner walls of the two door panels (4).

10. The rear-end material feeding mechanism of the gas-fired heating furnace according to claim 3, characterized in that, An extrusion plate (15) is fixedly connected to one side of the outer wall of the U-shaped expansion cover (32) and one side of the outer wall of the U-shaped outer cover (33). An extrusion groove (16) corresponding to the extrusion plate (15) is opened on the inner wall of the U-shaped wide cover (31) and the outer wall of the U-shaped expansion cover (32).

Images