Pit type carburizing furnace

Abstract

The utility model discloses a pit-type carburizing furnace, which relates to the technical field of pit-type carburizing furnaces and comprises a pit-type carburizing furnace main body, a furnace cover covers a furnace mouth of the pit-type carburizing furnace main body, a workpiece placing frame is placed in the pit-type carburizing furnace main body, a first guide beam is fixedly arranged between the pair of upright posts, and a second guide beam is fixedly arranged between the pair of upright posts. A sliding block is arranged on the side surface of the first guide beam in a sliding mode, a second servo hydraulic cylinder is fixedly installed on the bottom face of the sliding block, a lifting frame is fixedly arranged at the telescopic end of the second servo hydraulic cylinder, a plurality of second guide beams are fixedly arranged in the lifting frame, and a pair of movable frames are jointly arranged on the side surfaces of the second guide beams in a sliding mode; according to the lifting device, the lifting hooks can be driven to penetrate through the lifting lugs through opposite movement of the pair of movable frames, manual operation of workers is not needed, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pit-type carburizing furnaces, in particular to a pit-type carburizing furnace. Background Art

[0002] The pit carburizing furnace is a new type of energy-saving cycle-operated heat treatment electric furnace, which is mainly used for gas carburizing of steel parts. At present, when the pit carburizing furnace is taken out of the furnace after each carburizing is completed, a worker is required to stand at the furnace door to hang the lifting hook on the workpiece placement rack of the carburizing furnace to carry out the furnace unloading work. Due to the high temperature, there are safety hazards. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a pit carburizing furnace, which solves the problem that in the existing pit carburizing furnace, a worker needs to stand at the furnace door to hang the lifting hook on the workpiece placement rack of the carburizing furnace to carry out the furnace unloading work after each carburizing is completed. Due to the high temperature, there are safety hazards.

[0004] In order to achieve the above purpose, the present invention is implemented through the following technical solutions: a pit carburizing furnace, including a pit carburizing furnace body, the pit carburizing furnace body furnace port is covered with a furnace cover, a workpiece placement rack is placed inside the pit carburizing furnace body, and also includes a pair of columns, a first guide beam is fixedly provided between the pair of columns, a slider is slidingly provided on the side surface of the first guide beam, a second servo hydraulic cylinder is fixedly installed on the bottom surface of the slider, a lifting frame is fixedly provided at the telescopic end of the second servo hydraulic cylinder, a plurality of second guide beams are fixedly provided in the lifting frame, and a plurality of second guide beams are fixedly provided in the lifting frame. A pair of movable frames are provided on the side surfaces of the beam for sliding together, and a plurality of lifting hooks are fixed on the bottom surface of the movable frame, and movable rods are hinged on the opposite surfaces of the pair of movable frames, a cross beam is fixed inside the lifting frame, a third servo motor is fixedly installed on the cross beam, a rotating plate is fixed on the output shaft of the third servo motor, the upper end side of the movable rod is rotatably connected to the end side of the bottom surface of the rotating plate, a top frame is fixed on the top of the workpiece placement frame, and a plurality of lifting ears are fixed on the upper surface of the top frame, a cover opening mechanism is provided on the side surface of the main body of the well-type carburizing furnace, and a driving mechanism is provided on the slider.

[0005] Preferably, the cover opening mechanism includes a first servo hydraulic cylinder, which is fixedly mounted on the side surface of the main body of the pit-type carburizing furnace. A lifting block is fixedly provided at the telescopic end of the first servo hydraulic cylinder, and a main shaft is rotatably provided at the upper end of the lifting block. A movable arm is fixedly provided at the upper end of the main shaft, and the movable arm is fixedly connected to the furnace cover through a connecting frame.

[0006] Preferably, the driving mechanism includes a second servo motor, which is fixedly mounted on the upper surface of the slider, a third gear is fixedly provided on the output shaft of the second servo motor, a rack is fixedly provided between a pair of the columns, and the rack is engaged with the third gear.

[0007] Preferably, an electric fan is rotatably provided in the furnace cover, a fan motor is fixedly mounted on the top surface of the furnace cover, and the electric fan is driven by the fan motor.

[0008] Preferably, a first servo motor is fixedly mounted on the side surface of the lifting block, a first gear is fixedly mounted on the output shaft of the first servo motor, a second gear is fixedly mounted on the side surface of the main shaft, and the second gear is meshed with the first gear.

[0009] Preferably, the lifting hook matches the lifting ear.

[0010] Beneficial effects:

[0011] The utility model provides a pit-type carburizing furnace, which has the following beneficial effects:

[0012] By rotating the movable arm, the furnace cover can be driven away from the furnace mouth, and by lowering the lifting frame, the lifting hook can be driven to descend to the side of the lifting ear. By moving a pair of movable frames toward each other, the lifting hook can be driven to pass through the lifting ear. No manual operation by workers is required, which reduces safety hazards. By rising the lifting hook, the workpiece placement rack can be driven to rise, thereby moving the workpiece placement rack out of the main body of the pit-type carburizing furnace, and the workpiece placement rack can be moved above the specified position by moving the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the utility model;

[0014] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0015] Figure 3 This is a top view of the transfer plate of the utility model;

[0016] Figure 4 It is a side view of the lifting lug in the utility model.

[0017] In the figure: 1. Main body of the pit carburizing furnace; 2. Workpiece placement rack; 3. Top rack; 4. Lifting lug; 5. Furnace cover; 6. Electric fan; 7. Fan motor; 8. Connecting rack; 9. Movable arm; 10. Main shaft; 11. Second gear; 12. First gear; 13. First servo motor; 14. Lifting block; 15. First servo hydraulic cylinder; 16. Column; 17. First guide beam; 18. Rack; 19. Third gear; 20. Second servo motor; 21. Slider; 22. Second servo hydraulic cylinder; 23. Third servo motor; 24. Lifting rack; 25. Turn plate; 26. Movable rod; 27. Movable rack; 28. Lifting hook; 29. ​​Second guide beam; 30. Crossbeam. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figures 1-4The utility model provides a technical solution: a pit carburizing furnace, comprising a pit carburizing furnace body 1, a furnace cover 5 covering the furnace opening of the pit carburizing furnace body 1, a workpiece placement rack 2 placed inside the pit carburizing furnace body 1, and a pair of columns 16, a first guide beam 17 is fixedly provided between the pair of columns 16, a slider 21 is provided on the side surface of the first guide beam 17 for sliding, a second servo hydraulic cylinder 22 is fixedly installed on the bottom surface of the slider 21, a lifting frame 24 is fixedly provided on the telescopic end of the second servo hydraulic cylinder 22, and a plurality of second guide beams 29 are fixedly provided in the lifting frame 24 , a pair of movable frames 27 are slidingly provided on the side surfaces of multiple second guide beams 29, and a plurality of lifting hooks 28 are fixedly provided on the bottom surface of the movable frame 27. The opposite surfaces of the pair of movable frames 27 are hinged with movable rods 26. A crossbeam 30 is fixedly provided in the lifting frame 24, and a third servo motor 23 is fixedly installed on the crossbeam 30. The output shaft of the third servo motor 23 is fixed with a rotating plate 25. The upper end side of the movable rod 26 is rotatably connected to the lower end side of the rotating plate 25. A top frame 3 is fixed on the top of the workpiece placement frame 2, and a plurality of lifting ears 4 are fixed on the upper surface of the top frame 3. Well carburizing The side surface of the furnace body 1 is provided with an opening mechanism, and the slider 21 is provided with a driving mechanism; the opening mechanism includes a first servo hydraulic cylinder 15, which is fixedly mounted on the side surface of the pit-type carburizing furnace body 1, and a lifting block 14 is fixedly mounted on the telescopic end of the first servo hydraulic cylinder 15. The upper end of the lifting block 14 is provided with a main shaft 10 for rotation, and a movable arm 9 is fixedly mounted on the upper end of the main shaft 10. The movable arm 9 is fixedly connected to the furnace cover 5 through a connecting frame 8; the driving mechanism includes a second servo motor 20, which is fixedly mounted on the upper surface of the slider 21. The second servo motor A third gear 19 is fixedly provided on the output shaft 20, and a rack 18 is fixedly provided between a pair of columns 16, and the rack 18 is engaged with the third gear 19; an electric fan 6 is rotatably provided in the furnace cover 5, and a fan motor 7 is fixedly installed on the top surface of the furnace cover 5, and the electric fan 6 is driven by the fan motor 7; a first servo motor 13 is fixedly installed on the side surface of the lifting block 14, and a first gear 12 is fixedly provided on the output shaft of the first servo motor 13, and a second gear 11 is fixedly provided on the side surface of the main shaft 10, and the second gear 11 is engaged with the first gear 12; the lifting hook 28 matches the lifting ear 4.

[0020] Through the use of personnel in this field, all electrical components in this case are electrically connected to their corresponding power supplies, and appropriate controllers should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working sequence between the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0021] Example: According to the specification Figures 1-4It can be seen that when in use, the extension of the first servo hydraulic cylinder 15 can drive the lifting block 14 to rise, and the lifting block 14 can drive the furnace cover 5 to rise by rising. Starting the first servo motor 13 can drive the first gear 12 to rotate, and the rotation of the first gear 12 can drive the second gear 11 to rotate. The rotation of the second gear 11 can drive the movable arm 9 to rotate, and the rotation of the movable arm 9 can drive the furnace cover 5 away from the furnace mouth. The extension of the second servo hydraulic cylinder 22 can drive the lifting frame 24 to descend, and the descent of the lifting frame 24 can drive the lifting hook 28 to descend to the side of the lifting ear 4. Starting the third servo motor 23 can drive the rotating plate 25 to rotate. By rotating the turn plate 25, a pair of movable frames 27 can be driven to move toward each other, and by the pair of movable frames 27 moving toward each other, the lifting hook 28 can be driven to pass through the lifting ear 4. No manual operation by workers is required, which reduces safety hazards. The second servo hydraulic cylinder 22 is shortened to drive the lifting hook 28 to rise, and the lifting hook 28 is raised to drive the workpiece placement rack 2 to rise, thereby moving the workpiece placement rack 2 out of the pit-type carburizing furnace body 1. Starting the second servo motor 20 can drive the third gear 19 to rotate, and the rotation of the third gear 19 can drive the slider 21 to move, and the movement of the slider 21 can move the workpiece placement rack 2 to above the specified position.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pit carburizing furnace, comprising a pit carburizing furnace body (1), wherein the furnace opening of the pit carburizing furnace body (1) is covered with a furnace cover (5), and a workpiece placement rack (2) is placed inside the pit carburizing furnace body (1), characterized in that: The invention also includes a pair of columns (16), a first guide beam (17) is fixedly provided between the pair of columns (16), a slider (21) is slidably provided on the side surface of the first guide beam (17), a second servo hydraulic cylinder (22) is fixedly installed on the bottom surface of the slider (21), a lifting frame (24) is fixedly provided on the telescopic end of the second servo hydraulic cylinder (22), a plurality of second guide beams (29) are fixedly provided in the lifting frame (24), a pair of movable frames (27) are slidably provided on the side surfaces of the plurality of second guide beams (29), a plurality of lifting hooks (28) are fixedly provided on the bottom surface of the movable frame (27), and a pair of movable frames (27) are fixedly provided on the side surfaces of the plurality of second guide beams (29). The facing surfaces of the movable frame (27) are hinged with movable rods (26), a crossbeam (30) is fixedly provided inside the lifting frame (24), a third servo motor (23) is fixedly installed on the crossbeam (30), an output shaft of the third servo motor (23) is fixedly provided with a rotating plate (25), the upper surface end side of the movable rod (26) is rotatably connected to the bottom surface end side of the rotating plate (25), a top frame (3) is fixedly provided on the top of the workpiece placement frame (2), a plurality of lifting ears (4) are fixedly provided on the upper surface of the top frame (3), a cover opening mechanism is provided on the side surface of the shaft-type carburizing furnace body (1), and a driving mechanism is provided on the slider (21).

2. A pit type carburizing furnace according to claim 1, characterized in that: The cover opening mechanism includes a first servo hydraulic cylinder (15), which is fixedly mounted on the side surface of the pit-type carburizing furnace body (1). A lifting block (14) is fixedly provided at the telescopic end of the first servo hydraulic cylinder (15), and a main shaft (10) is rotatably provided at the upper end of the lifting block (14). A movable arm (9) is fixedly provided at the upper end of the main shaft (10), and the movable arm (9) is fixedly connected to the furnace cover (5) via a connecting frame (8).

3. A pit type carburizing furnace according to claim 1, characterized in that: The driving mechanism includes a second servo motor (20), the second servo motor (20) is fixedly mounted on the upper surface of the slider (21), a third gear (19) is fixedly provided on the output shaft of the second servo motor (20), a rack (18) is fixedly provided between a pair of the columns (16), and the rack (18) is meshed with the third gear (19).

4. A pit type carburizing furnace according to claim 1, characterized in that: An electric fan (6) is rotatably provided in the furnace cover (5), and a fan motor (7) is fixedly installed on the top surface of the furnace cover (5). The electric fan (6) is driven by the fan motor (7).

5. A pit type carburizing furnace according to claim 2, characterized in that: A first servo motor (13) is fixedly mounted on the side surface of the lifting block (14); a first gear (12) is fixedly mounted on the output shaft of the first servo motor (13); a second gear (11) is fixedly mounted on the side surface of the main shaft (10); and the second gear (11) is meshed with the first gear (12).

6. A pit type carburizing furnace according to claim 1, characterized in that: The lifting hook (28) matches the lifting lug (4).

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