A kind of axle housing raw material heat treatment device

Abstract

The utility model relates to bridge shell raw material processing technical field discloses a bridge shell raw material heat treatment device, including trolley furnace body, one side of trolley furnace body rotatably connected has the furnace door, is provided with the track no.

Description

Technical Field

[0001] This utility model relates to the field of bridge shell raw material processing technology, and in particular to a heat treatment device for bridge shell raw materials. Background Technology

[0002] As a key load-bearing component of the automotive transmission system, the axle housing's mechanical properties directly affect the vehicle's safety and reliability. To obtain the required strength, toughness, and wear resistance, axle housing raw materials or semi-finished products typically require one or more heat treatment processes, such as quenching, normalizing, and tempering. Due to its advantages such as large load capacity and convenient loading and unloading, bogie furnaces are widely used in the batch heat treatment production of medium to large-sized workpieces like axle housings.

[0003] In existing technologies, a typical bogie hearth furnace heat treatment process is as follows: First, the entire bogie carrying the workpiece is completely driven out of the furnace body. Then, using a crane, hoist, or other handling equipment, the raw bridge housing materials to be treated are hoisted one by one and stacked on the heat-resistant base plate of the bogie. After all the workpieces in a batch are loaded, the entire bogie, along with the workpieces, is driven into the furnace chamber. Finally, the furnace door is closed and sealed, and heating begins for heat treatment. After the heat treatment process is completed, the furnace door is opened, the entire bogie is driven out, and unloading and subsequent cooling or transfer processes are performed.

[0004] However, the aforementioned traditional heat treatment loading and unloading methods have significant drawbacks. The core problem is that each loading or unloading operation requires the furnace door to be fully opened, and the entire high-temperature or ambient-temperature trolley to be moved in or out of the furnace. When the furnace is operating at high temperatures, opening the furnace door causes significant heat loss through radiation and convection, resulting in substantial energy waste. To restore the furnace temperature to the set process temperature, additional electricity or fuel is required, increasing production costs and extending non-production auxiliary time. More importantly, the large-scale and prolonged opening of the furnace door causes drastic fluctuations in the furnace temperature field, disrupting the uniformity and stability of the furnace temperature. This may adversely affect the consistency of heat treatment quality for other workpieces in the same furnace, making it difficult to meet the process requirements of high-precision heat treatment. Therefore, a heat treatment device for bridge shell raw materials is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heat treatment device for bridge shell raw materials, which aims to improve the problem that the traditional heat treatment loading and unloading method requires frequent opening of the furnace door, resulting in a large loss of heat in the furnace chamber, which not only increases energy consumption costs, but also affects the uniformity of heat treatment quality due to drastic fluctuations in furnace temperature.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat treatment device for bridge shell raw materials, including a trolley furnace body, a furnace door rotatably connected to one side of the trolley furnace body, a track 1 provided on the lower side inside the trolley furnace body, and a loading and unloading assembly provided directly above the track 1.

[0007] The loading and unloading assembly includes a bracket one, which is positioned directly above a track one. A traveling wheel is rotatably connected inside the bracket one, and the traveling wheel is positioned on the upper side of the track one. A rotating plate one is rotatably connected to one side of the inner wall of the bracket one. A connecting rod is rotatably connected inside the rotating plate one. A rotating plate two is rotatably connected to the outer wall of the connecting rod. A hinge block is rotatably connected to the outer wall of the rotating plate two. A bracket two is fixedly connected to the upper surface of the hinge block. A rotating rod is provided inside the connecting rod, and a threaded groove is provided inside the rotating rod. The threaded groove is threadedly connected to the inside of the slider. A handle is fixedly connected to one end of the rotating rod.

[0008] As a further description of the above technical solution:

[0009] The trolley furnace body is equipped with a heat recovery pipe, and one end of the heat recovery pipe is fixedly connected to a flue gas condensation waste heat recovery device.

[0010] As a further description of the above technical solution:

[0011] A support frame is fixedly connected to the lower surface of the flue gas condensation waste heat recovery unit, and a top plate is slidably connected to the upper surface of the flue gas condensation waste heat recovery unit.

[0012] As a further description of the above technical solution:

[0013] Multiple top rods are fixedly connected to the upper surface of the flue gas condensation waste heat recovery unit, and an L-shaped frame is fixedly connected to the upper surface of the top plate near the top rods.

[0014] As a further description of the above technical solution:

[0015] An open plate is fixedly connected to one side of the outer wall of the L-shaped frame, and the outer wall of the top rod penetrates the interior of the L-shaped frame and is slidably connected to the inner wall of the open plate.

[0016] As a further description of the above technical solution:

[0017] The push rod has a sliding connection to a locking block inside. The outer wall of the locking block engages with the upper surface of the L-shaped frame. A spring is fixedly connected to one side of the inner wall of the push rod, and one end of the spring is fixedly connected to one side of the outer wall of the locking block.

[0018] As a further description of the above technical solution:

[0019] A second spring is sleeved on the outer wall of the top rod. The lower end of the second spring is fixedly connected to the upper surface of the top plate, and the upper end of the second spring abuts against the lower surface of the opening plate.

[0020] As a further description of the above technical solution:

[0021] The furnace body opening of the trolley is provided with a second track, and a railcar is provided on the upper surface of the second track.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by placing the material above the second support, the second support is moved above the first track inside the trolley furnace body by pushing the first support. Then, by turning the handle, the internal thread groove of the rotating rod is rotated. After the thread groove is threadedly connected to the slider, the slider drives the connecting rod to move, thereby achieving the effect of rotating the first and second rotating plates. Then, the second rotating plate drives the hinge block, causing the second support to push the material into the trolley furnace body, thus achieving the effect of rapid loading and unloading of materials. This solves the problem of heat loss caused by frequent opening and closing of the door in the existing device, thereby improving the practicality of the device.

[0024] 2. In this utility model, after heat is collected through the hot gas recovery pipe, the heat is then collected and recovered through the flue gas condensation waste heat recovery device. At this time, by pressing the locking block, the first spring contracts. After the locking block retracts into the top rod, the reaction force of the second spring pushes the opening locking plate, which in turn moves the L-shaped frame and the top plate, allowing for quick removal from the top of the flue gas condensation waste heat recovery device. This solves the problem of existing devices being inconvenient to disassemble the inside of the flue gas condensation waste heat recovery device, resulting in a large amount of dust adhering inside the device and affecting the heat recovery efficiency, thereby improving the practicality of the device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a heat treatment device for bridge shell raw materials proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of a portion of the support structure of a heat treatment device for bridge shell raw materials proposed in this utility model.

[0027] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0028] Figure 4 This is a schematic diagram of the top plate structure of a heat treatment device for bridge shell raw materials proposed in this utility model.

[0029] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0030] Legend:

[0031] 1. Boiler body; 2. Boiler door; 3. Track 1; 4. Support 1; 5. Traveling wheels; 6. Rotating plate 1; 7. Rotating plate 2; 8. Hinge block; 9. Support 2; 10. Connecting rod; 11. Sliding block; 12. Rotating rod; 13. Threaded groove; 14. Handle; 15. Heat recovery pipe; 16. Flue gas condensation waste heat recovery unit; 17. Support frame; 18. Top plate; 19. Top rod; 20. Spring 1; 21. Locking block; 22. L-shaped frame; 23. Opening locking plate; 24. Track 2; 25. Railcar; 26. Spring 2. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-5 An embodiment of this utility model is provided: a heat treatment device for bridge shell raw materials, including a trolley furnace body 1, a furnace door 2 for sealing the furnace chamber is rotatably connected to one side of the trolley furnace body 1, a track 3 for loading and unloading components to move in the furnace is provided on the lower side of the interior of the trolley furnace body 1, and a loading and unloading component is provided directly above the track 3.

[0034] The loading and unloading assembly includes a support frame 4, which serves as the main moving frame. The support frame 4 is positioned directly above the track 3. Inside the support frame 4, there are rotatably connected wheels 5 for rolling on the track. The wheels 5 are positioned on the upper side of the track 3. On one side of the inner wall of the support frame 4, there is a rotating plate 6, which serves as part of the linkage mechanism. Inside the rotating plate 6, there is a connecting rod 10, which serves as a transmission component. On the outer wall of the connecting rod 10, there is a rotating plate 7. On the outer wall of the rotating plate 7, there is a hinge block 8 for transmitting motion. On the upper surface of the hinge block 8, there is a support frame 9 for supporting the material to be processed. Inside the connecting rod 10, there is a rotating rod 12, which serves as the drive source. The rotating rod 12 has a threaded groove 13 inside, which is threadedly connected to the slider 11 to form a screw transmission mechanism. One end of the rotating rod 12 is fixedly connected to a handle 14 for manual operation. The opening of the trolley furnace body 1 is provided with a track 24, which communicates with the outside of the furnace. On the upper surface of the track 24, there is a track 25 for moving the loading and unloading assembly to the furnace opening.

[0035] Specifically, during loading, the raw materials to be processed are first placed on support 2 9 outside the furnace. Then, the entire loading and unloading assembly is moved along track 24 and track 3 to a predetermined position inside the furnace via track 25 and the traveling wheels 5 on support 1 4. Next, the operator turns handle 14, causing the rotating rod 12 to rotate. The rotating rod 12 drives the slider 11 to move linearly through its threaded groove 13, and the slider 11 in turn pushes the connecting rod 10. The displacement of the connecting rod 10 is amplified by a linkage mechanism consisting of rotating plate 1 6, rotating plate 2 7, and hinge block 8, ultimately driving support 2 9 to smoothly deliver the material deep into the furnace. This design allows operation to be completed through a small feed port, eliminating the need to fully open the furnace door 2, thus achieving rapid loading and unloading. This effectively solves the problem of severe heat loss caused by frequent large openings of the furnace door 2, improving the energy utilization rate and practicality of the device.

[0036] Reference Figures 1-5 The trolley furnace body 1 is equipped with a heat recovery pipe 15 for collecting and guiding high-temperature flue gas in the furnace. One end of the heat recovery pipe 15 is fixedly connected to a flue gas condensing waste heat recovery device 16 for heat exchange with the flue gas. A support frame 17 is fixedly connected to the lower surface of the flue gas condensing waste heat recovery device 16 for stabilization. A top plate 18, which serves as a removable top cover, is slidably connected to the upper surface of the flue gas condensing waste heat recovery device 16. To enable quick disassembly and assembly of the top plate 18, multiple top rods 19, which serve as fixed bases and guides, are fixedly connected to the upper surface of the flue gas condensing waste heat recovery device 16. An L-shaped frame 22 is fixedly connected to the upper surface of the top plate 18 near the top rods 19. The outer wall of the L-shaped frame 22 is... An open plate 23 is fixedly connected to the top rod 19 for installation. The outer wall of the top rod 19 penetrates the interior of the L-shaped frame 22 and is slidably connected to the inner wall of the open plate 23. A locking block 21 is slidably connected inside the top rod 19. The outer wall of the locking block 21 is engaged with the upper surface of the L-shaped frame 22 in its natural state to achieve locking. A spring 20 is fixedly connected to one side of the inner wall of the top rod 19 to provide a return force for the locking block 21. One end of the spring 20 is fixedly connected to one side of the outer wall of the locking block 21. To achieve automatic ejection, a second spring 26 is sleeved on the outer wall of the top rod 19. The lower end of the second spring 26 is fixedly connected to the upper surface of the top plate 18, and the upper end of the second spring 26 abuts against the lower surface of the open plate 23.

[0037] Specifically, in the locked state, spring 20 pushes the locking block 21 to extend the top rod 19 and lock the L-shaped frame 22, thereby firmly fixing the top plate 18 to the flue gas condensing waste heat recovery unit 16. At this time, spring 26 is in a compressed state. When it is necessary to disassemble the top plate 18 for cleaning, the operator only needs to press the locking block 21 inward to make it retract into the top rod 19 against the elastic force of spring 20, thereby releasing the lock on the L-shaped frame 22. Once the lock is released, the compressed spring 26 will immediately release the reaction force, pushing the opening locking plate 23 and the entire top plate 18 assembly upward, causing it to quickly separate from the flue gas condensing waste heat recovery unit 16.

[0038] Working Principle: When using this device, firstly, the material to be processed is placed on the support 29 outside the furnace. Then, by means of a railcar 25 or manual pushing, the support 14, carrying the entire loading and unloading assembly, is moved along the rail 24 outside the furnace body 1 to the opening of the furnace door 2, and continues along the rail 3 inside the furnace body to the predetermined position. This process only requires opening a small feed inlet, not the entire furnace door 2. After the support 14 is positioned, the operator turns the handle 14, which drives the rotating rod 12 to rotate. Because the threaded groove 13 inside the rotating rod 12 forms a threaded connection with the slider 11, the rotational motion of the rotating rod 12 is converted into the linear motion of the slider 11 along the axis of the connecting rod 10. The movement of the slider 11 pushes the connecting rod 10, and through the linkage mechanism composed of rotating plate 16, rotating plate 27, and hinge block 8, the linear displacement of the connecting rod 10 is amplified and converted into the horizontal pushing motion of the support 29, thereby smoothly feeding the material from the support 29 into the heating zone inside the furnace. The unloading process can be performed by reversing the operation. This design enables rapid loading and unloading without fully opening the furnace door 2, significantly reducing heat loss from the furnace.

[0039] Secondly, during the heat treatment process, to recover energy, the high-temperature flue gas generated in the furnace is guided to the flue gas condensing waste heat recovery unit 16 through the heat recovery pipe 15 for heat exchange and recovery. As the usage time increases, dust may accumulate inside the recovery unit, affecting its efficiency, requiring cleaning. The working principle of the quick disassembly mechanism of this utility model is as follows: maintenance personnel press the locking block 21 on the top rod 19, causing the spring 20 to compress and retract, and the locking block 21 to retract into the top rod 19, thereby releasing the lock on the L-shaped frame 22. Once the lock is released, the pre-compressed spring 26, with one end abutting against the top plate 18 and the other end against the lower surface of the opening locking plate 23, releases its elasticity, pushing the opening locking plate 23 and the L-shaped frame 22 and top plate 18 fixed thereto upwards. This allows the top plate 18 to be quickly and easily removed from the flue gas condensing waste heat recovery unit 16, facilitating thorough cleaning of the equipment's interior and ensuring heat recovery efficiency.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A heat treatment apparatus for bridge shell raw materials, characterized in that, It includes a trolley furnace body (1), a furnace door (2) is rotatably connected to one side of the trolley furnace body (1), a track (3) is provided on the lower side inside the trolley furnace body (1), and a loading and unloading assembly is provided directly above the track (3); The loading and unloading assembly includes a bracket (4), which is located directly above the track (3). A traveling wheel (5) is rotatably connected inside the bracket (4). The traveling wheel (5) is located on the upper side of the track (3). A rotating plate (6) is rotatably connected to one side of the inner wall of the bracket (4). A connecting rod (10) is rotatably connected inside the rotating plate (6). A rotating plate (7) is rotatably connected to the outer wall of the connecting rod (10). A hinge block (8) is rotatably connected to the outer wall of the rotating plate (7). A bracket (9) is fixedly connected to the upper surface of the hinge block (8). A rotating rod (12) is provided inside the connecting rod (10). A threaded groove (13) is provided inside the rotating rod (12). The threaded groove (13) is threadedly connected to the slider (11). A handle (14) is fixedly connected to one end of the rotating rod (12).

2. The heat treatment apparatus for bridge shell raw materials according to claim 1, characterized in that: The trolley furnace body (1) is equipped with a heat recovery pipe (15), and a flue gas condensation waste heat recovery device (16) is fixedly connected to one end of the heat recovery pipe (15).

3. The heat treatment apparatus for bridge shell raw materials according to claim 2, characterized in that: The lower surface of the flue gas condensation waste heat recovery unit (16) is fixedly connected to a support frame (17), and the upper surface of the flue gas condensation waste heat recovery unit (16) is slidably connected to a top plate (18).

4. The heat treatment apparatus for bridge shell raw materials according to claim 3, characterized in that: The upper surface of the flue gas condensation waste heat recovery unit (16) is fixedly connected with multiple top rods (19), and the upper surface of the top plate (18) is fixedly connected with an L-shaped frame (22) on the side near the top rods (19).

5. The heat treatment apparatus for bridge shell raw materials according to claim 4, characterized in that: An open plate (23) is fixedly connected to one side of the outer wall of the L-shaped frame (22), and the outer wall of the top rod (19) penetrates the interior of the L-shaped frame (22) and is slidably connected to the inner wall of the open plate (23).

6. The bridge shell raw material heat treatment apparatus according to claim 5, characterized in that: The top rod (19) is slidably connected to a locking block (21), the outer wall of the locking block (21) is engaged with the upper surface of the L-shaped frame (22), and a spring (20) is fixedly connected to one side of the inner wall of the top rod (19), one end of the spring (20) is fixedly connected to one side of the outer wall of the locking block (21).

7. The heat treatment apparatus for bridge shell raw materials according to claim 6, characterized in that: The top rod (19) is fitted with a second spring (26) on its outer wall. The lower end of the second spring (26) is fixedly connected to the upper surface of the top plate (18), and the upper end of the second spring (26) abuts against the lower surface of the opening plate (23).

8. The heat treatment apparatus for bridge shell raw materials according to claim 1, characterized in that: The trolley furnace body (1) is provided with a second track (24) at the opening, and a track car (25) is provided on the upper surface of the second track (24).

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