A rocker shaft carburizing and quenching apparatus

Abstract

The utility model provides a kind of rocker shaft carburizing quenching equipment, including furnace body and furnace cover, still be provided with inner bag in furnace body, vacuum cavity is arranged between furnace body and inner bag, fixed stand is still fixedly arranged between furnace body and inner bag, quenching cavity is opened in inner bag inside, still be provided with radiation pipe in inner bag, radiation pipe is spirally arranged, furnace body side end is still provided with uncapping assembly, by being provided with vacuum cavity between furnace body and inner bag, the heat preservation performance of furnace body is guaranteed.

Description

Technical Field

[0001] This utility model relates to quenching equipment, and more particularly, to a rocker arm shaft carburizing and quenching equipment. Background Technology

[0002] A rocker arm shaft is a type of shaft part. To ensure the toughness and impact resistance of the shaft, it is made of low-carbon steel. However, low-carbon steel has poor wear resistance, so it needs to be carburized.

[0003] Currently, Chinese patent CN202121951595.0 discloses a pit-type carburizing furnace, including a furnace shell and a top cover. The top cover covers the furnace shell, and a furnace lining is provided inside the furnace shell. A return gas pipe is provided on one side of the furnace shell near the lower end. The upper and lower ends of the return gas pipe pass through the furnace shell and the furnace lining and are connected to the inside of the furnace lining.

[0004] The aforementioned patents still have shortcomings. Well-type carburizing furnaces typically require continuous heating of workpieces during operation, so the heat preservation performance of the carburizing furnace is relatively important. The heat preservation performance of the aforementioned carburizing furnaces is relatively poor, resulting in high energy consumption and poor environmental performance during use. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a rocker arm shaft carburizing and quenching equipment, which has the advantage of good heat preservation performance.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a rocker arm shaft carburizing and quenching equipment, including a furnace body and a furnace cover, an inner liner is also provided in the furnace body, a vacuum chamber is provided between the furnace body and the inner liner, a fixing frame is also fixedly provided between the furnace body and the inner liner, a quenching chamber is opened on the inner side of the inner liner, a radiation tube is also provided in the inner liner, the radiation tube is arranged in a spiral shape, and a cover opening assembly is also provided on the side end of the furnace body.

[0007] Preferably, an anti-collision guardrail is also provided on the inner side of the inner liner, and a radiation cavity is formed between the anti-collision guardrail and the inner liner, and the radiation tube is disposed in the radiation cavity.

[0008] Preferably, it also includes a hanger for installing the shaft, the hanger including a main hanger rod, a material rack and a lifting ring, a fixing component one is provided between the main hanger rod and the lifting ring, and a fixing component two that cooperates with the fixing component one is provided inside the furnace body.

[0009] Preferably, the first fixing component includes a support plate, which is fixedly disposed between the main lifting rod and the lifting ring; the second fixing component includes a crossbeam assembly, which is hingedly disposed inside the furnace body; after the lifting frame enters the furnace body, the support plate is installed on the crossbeam assembly.

[0010] Preferably, the furnace body is further provided with an annular plate, and the crossbeam assembly includes a pair of main beams. One side of each of the two main beams is hinged to the annular plate, and an avoidance groove is formed between the two main beams. A limiting groove is also provided on the main beam, and the limiting groove is used to limit the support plate.

[0011] Preferably, a servo motor is provided on the furnace cover, a guide fan is provided inside the furnace cover, the servo motor drives the guide fan to rotate, and an exhaust pipe is also provided on the furnace cover.

[0012] Preferably, the opening assembly includes a first oil cylinder, a second oil cylinder, and a gear shaft. The furnace cover is fixed to the gear shaft, the output end of the first oil cylinder is fixed to the gear shaft, and the output end of the second oil cylinder is provided with a rack that meshes with the gear shaft. The first oil cylinder drives the furnace cover to move up and down, and the second oil cylinder drives the furnace cover to rotate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a vacuum chamber between the furnace body and the inner liner, the heat preservation performance of the furnace body is ensured. By setting an anti-collision net, the radiant tube is protected in the radiant chamber to prevent the product from colliding with the radiant tube during feeding, thereby increasing the service life of the quenching furnace. 2. Through the cooperation between the support plate and the main beam, the hanger can be hoisted into the furnace body. The support plate is limited by the limiting groove to ensure the installation position of the hanger, so that the product is heated at a relatively uniform temperature during quenching, thereby increasing the quenching effect. 3. By coordinating oil cylinder one and oil cylinder two, the furnace cover can be automatically opened and closed, and the furnace cover can be moved out of the feeding position, increasing the automation level of the quenching furnace. Attached Figure Description

[0014] Figure 1 This is a schematic internal cross-sectional view of an embodiment; Figure 2 This is a partial schematic diagram of an embodiment; Figure 3 for Figure 2 AA sectional view; Figure 4 for Figure 3 A structural diagram in another state; Figure 5 This is a partial sectional view of the hanger.

[0015] Attached reference numerals: 1. Furnace body; 2. Furnace cover; 3. Inner liner; 4. Vacuum chamber; 5. Fixing frame; 6. Quenching chamber; 7. Radiant tube; 8. Opening assembly; 9. Anti-collision netting; 10. Radiant chamber; 11. Hanger; 12. Main hanging rod; 13. Material rack; 14. Lifting ring; 15. Material hole; 16. Fixing component one; 17. Fixing component two; 18. Support plate; 19. Crossbeam assembly; 20. Annular plate; 21. Main beam; 22. Clearance groove; 23. Limiting groove; 24. Servo motor; 25. Guide fan; 26. Exhaust pipe; 27. Hydraulic cylinder one; 28. Hydraulic cylinder two; 29. ​​Gear shaft; 30. Gear tooth; 31. Rack; 90. Rocker arm shaft. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0017] A rocker arm shaft carburizing and quenching equipment includes a furnace body 1 and a furnace cover 2. The furnace body 1 is a pit furnace. An inner liner 3 is also provided inside the furnace body 1. A vacuum chamber 4 is provided between the furnace body 1 and the inner liner 3. A fixing frame 5 is also fixedly provided between the furnace body 1 and the inner liner 3. A quenching chamber 6 is opened on the inner side of the inner liner 3. A radiation tube 7 is also provided inside the inner liner 3. The radiation tube 7 is arranged in a spiral shape. A cover opening assembly 8 is also provided on the side end of the furnace body 1.

[0018] The inner liner 3 is also equipped with a crash barrier 9. The crash barrier 9 and the inner liner 3 form a radiation cavity 10. The radiation tube 7 is set in the radiation cavity 10 and wrapped around the crash barrier 9. By setting the crash barrier 9, the radiation tube 7 is protected to a certain extent, preventing the product from colliding with the radiation tube 7 during hoisting and loading, and increasing the service life of the quenching furnace.

[0019] It also includes a hanger 11 for mounting the shaft. The hanger 11 includes a main hanger 12, multiple material racks 13 and a lifting ring 14. The material racks 13 are arranged in a straight line on the main hanger 12. Multiple material holes 15 are opened on the material racks 13 for mounting the rocker arm shaft 90. The lifting ring 14 is located at the top of the main hanger 12. A fixing component 16 is provided between the main hanger 12 and the lifting ring 14. A fixing component 2 17 that cooperates with the fixing component 16 is provided inside the furnace body 1.

[0020] Fixing component 16 includes a support plate 18, which is fixedly disposed between the main hanger 12 and the lifting ring 14. Fixing component 2 17 includes a crossbeam assembly 19, which is hinged inside the furnace body 1. After the hanger 11 enters the furnace body 1, the support plate 18 is installed on the crossbeam assembly 19. An annular plate 20 is also provided inside the furnace body 1. The crossbeam assembly 19 includes a pair of main beams 21, one side of which is hinged to the annular plate 20. An clearance groove 22 is formed between the two main beams 21, and the width of the clearance groove 22 is greater than that of the support plate. The main beam 21 has a width of 18 and a limiting groove 23 is provided on it. The limiting groove 23 is used to limit the support plate 18. When it is necessary to unhook and fix the hanger 11, the hanger 11 is first sent into the furnace body 1 by equipment such as an overhead crane. Then, the two main beams 21 are lowered. The main beams 21 pass through the support plate 18 and rest on the side of the annular plate 20 away from the hinge point. At this time, by rotating the hanger 11, the support plate 18 can be rotated 90° to make the support plate 18 aligned with the limiting groove 23. The hanger 11 can then be lowered and installed on the main beam 21.

[0021] A servo motor 24 is installed on the furnace cover 2, and a guide fan 25 is installed inside the furnace cover 2. The servo motor 24 drives the guide fan 25 to rotate. The guide fan 25 is used to evenly push fresh, stable atmosphere to the entire working chamber, ensuring that all parts of the workpiece can come into contact with gas of consistent composition, thereby obtaining a uniform carburized layer. The furnace cover 2 is also equipped with an exhaust pipe 26 for exhausting exhaust gas. The cover opening assembly 8 includes a first hydraulic cylinder 27, a second hydraulic cylinder 28, and a gear shaft 29. The bottom of the gear shaft 29 is provided with long gear teeth 30. The furnace cover 2 and the gear shaft 29 are back-to-back. The gear teeth 30 are fixed on one side. The output end of the first cylinder 27 is fixed to the gear shaft 29, driving the gear shaft 29 to move up and down. The output end of the second cylinder 28 is equipped with a rack 31, which meshes with the gear shaft 29. The first cylinder 27 drives the furnace cover 2 to move up and down, and the second cylinder 28 drives the furnace cover 2 to rotate. When the first cylinder 27 drives the furnace cover 2 to move up and down, the rack 31 and the gear teeth 30 will not disengage. Through the cooperation of the first cylinder 27 and the second cylinder 28, the automatic opening and closing of the cover and the movement of the furnace cover 2 out of the feeding position are realized, increasing the automation level of the quenching furnace.

[0022] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A rocker arm shaft carburizing and quenching equipment, comprising a furnace body (1) and a furnace cover (2), characterized in that: The furnace body (1) is also provided with an inner liner (3), a vacuum chamber (4) is provided between the furnace body (1) and the inner liner (3), a fixing frame (5) is fixedly provided between the furnace body (1) and the inner liner (3), a quenching chamber (6) is opened on the inner side of the inner liner (3), a radiation tube (7) is also provided in the inner liner (3), the radiation tube (7) is arranged in a spiral shape, and a cover opening assembly (8) is also provided on the side end of the furnace body (1).

2. The rocker arm shaft carburizing and quenching equipment according to claim 1, characterized in that: The inner liner (3) is also provided with a crash barrier (9), and a radiation cavity (10) is formed between the crash barrier (9) and the inner liner (3). The radiation tube (7) is set in the radiation cavity (10).

3. The rocker arm shaft carburizing and quenching equipment according to claim 1, characterized in that: It also includes a hanger (11) for installing the shaft, the hanger (11) including a main hanger (12), a material rack (13) and a lifting ring (14), a fixing component one (16) is provided between the main hanger (12) and the lifting ring (14), and a fixing component two (17) that cooperates with the fixing component one (16) is provided inside the furnace body (1).

4. The rocker arm shaft carburizing and quenching equipment according to claim 3, characterized in that: The first fixing component (16) includes a support plate (18), which is fixedly installed between the main lifting rod (12) and the lifting ring (14). The second fixing component (17) includes a crossbeam assembly (19), which is hinged inside the furnace body (1). After the hanger (11) enters the furnace body (1), the support plate (18) is installed on the crossbeam assembly (19).

5. The rocker arm shaft carburizing and quenching equipment according to claim 4, characterized in that: The furnace body (1) is also provided with an annular plate (20). The crossbeam assembly (19) includes a pair of main beams (21). One side of each of the two main beams (21) is hinged to the annular plate (20). An avoidance groove (22) is formed between the two main beams (21). A limiting groove (23) is also provided on the main beam (21). The limiting groove (23) is used to limit the support plate (18).

6. The rocker arm shaft carburizing and quenching equipment according to claim 1, characterized in that: A servo motor (24) is provided on the furnace cover (2), and a guide fan (25) is provided inside the furnace cover (2). The servo motor (24) drives the guide fan (25) to rotate. An exhaust pipe (26) is also provided on the furnace cover (2).

7. The rocker arm shaft carburizing and quenching equipment according to claim 1, characterized in that: The opening assembly (8) includes a first cylinder (27), a second cylinder (28), and a gear shaft (29). The furnace cover (2) is fixed to the gear shaft (29). The output end of the first cylinder (27) is fixed to the gear shaft (29). The output end of the second cylinder (28) is provided with a rack (31). The rack (31) meshes with the gear shaft (29). The first cylinder (27) drives the furnace cover (2) to move up and down, and the second cylinder (28) drives the furnace cover (2) to rotate.

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