Nitriding lifting appliance for surface treatment of metal parts

Abstract

This utility model relates to the field of lifting tool technology and discloses a nitriding lifting tool for surface treatment of metal parts. It solves the problem that existing nitriding lifting tools cannot adjust their lifting spacing according to the size of the workpiece, and that adjacent workpieces easily obstruct each other when the workpiece is large, making lifting impossible. The tool includes a nitriding furnace with a furnace door hinged to the front. One side of the furnace door is fixedly connected to the furnace via a latch. A servo motor is fixedly installed on one side of the top of the furnace via a support base. The output end of the servo motor is equipped with a transmission component. Six hooks are evenly spaced in a ring inside the furnace. A rotating shaft is rotatably mounted on the upper end of each hook. A stop is fixedly installed between the two ends of each of the six rotating shafts, and a torsion spring is sleeved on both ends of the surface of each of the six rotating shafts. This nitriding lifting tool can adjust its lifting spacing according to the size of the workpiece, avoiding obstruction between adjacent large workpieces, and has a wide range of applications.

Description

Technical Field

[0001] This utility model belongs to the field of lifting tool technology, specifically a nitriding lifting tool for surface treatment of metal parts. Background Technology

[0002] Nitriding hangers for metal surface treatment processes are auxiliary tools specifically designed for the nitriding process. They are used to safely and stably suspend and fix metal workpieces in the nitriding furnace, ensuring uniform heating and consistent treatment results while preventing workpiece deformation or damage. They are typically made of high-temperature and corrosion-resistant materials, with a stable structure and ease of operation. Their applications are wide-ranging, covering the nitriding processes of various metal parts, such as automotive components (crankshafts, camshafts, etc.), mechanical parts (gears, bearings, etc.), molds (injection molds, die-casting molds, etc.), and power machinery components. By using nitriding hangers, these metal parts achieve excellent wear resistance, corrosion resistance, and high-temperature resistance after nitriding, thereby extending their service life and improving performance. Existing nitriding lifting tools cannot adjust their lifting spacing according to the size of the workpiece. When the workpiece is large, adjacent workpieces are prone to blocking each other, making it impossible to lift them, which affects the nitriding process. Therefore, their applicability is poor. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a nitriding lifting tool for surface treatment of metal parts, which effectively solves the problem that the existing nitriding lifting tool cannot adjust its lifting spacing according to the size of the workpiece being lifted, and that when the workpiece is large, adjacent workpieces are prone to blocking each other, resulting in the inability to lift.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a nitriding lifting fixture for surface treatment of metal parts, comprising a nitriding furnace, wherein a furnace door is hinged to the front of the nitriding furnace, and one side of the furnace door is fixedly connected to the nitriding furnace by a latch; a servo motor is fixedly installed on one side of the top of the nitriding furnace by a support base; a transmission component is provided at the output end of the servo motor; six hooks are arranged in a ring at equal intervals inside the nitriding furnace; a rotating shaft is rotatably installed at the upper end of each hook; a stop is fixedly installed between the two ends of each of the six rotating shafts; a torsion spring is sleeved on both ends of the surface of each of the six rotating shafts; the two ends of the torsion spring are respectively fixedly connected to the stop and the hook; the transmission component is connected to the six hooks for transmission; when the servo motor is running, the power is output to the six hooks through the transmission component, so that the six hooks move outward synchronously to expand the lifting distance.

[0005] Preferably, the transmission assembly includes a driving bevel gear, which is fixedly installed at the output end of the servo motor. A positioning seat is rotatably installed on one side of the driving bevel gear, and the bottom of the positioning seat is fixedly connected to the top of the nitriding furnace. A driven bevel gear is meshed with the lower part of the surface of the driving bevel gear. A shaft is fixedly installed at the bottom of the driven bevel gear. The surface of the shaft is rotatably connected to the middle part of the top of the nitriding furnace through a bushing. The lower end of the shaft extends into the interior of the nitriding furnace and is fixedly installed with a rotating disk.

[0006] Preferably, a limiting slip ring is fixedly installed on the circumferential surface of the rotating disk, and an annular groove is provided on the upper part of the inner wall of the nitriding furnace, with the limiting slip ring slidably installed inside the annular groove.

[0007] Preferably, the surface of the rotating disk has six equally spaced transmission grooves, each groove has a pin inserted inside, and the bottom end of each pin is fixedly mounted with a moving rod. A fixed disk is fixedly mounted on the upper part of the nitriding furnace, and the surface of the fixed disk has six equally spaced strip grooves. Limiting grooves are formed on both sides of each of the six strip grooves. The six moving rods are inserted into the six strip grooves, and sliders are fixedly mounted on the surface of each of the six moving rods. The two sides of each of the six sliders are slidably mounted in the corresponding limiting grooves. The bottom ends of each of the six moving rods are rotatably connected to six hooks through a rotating head.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: when the operator starts the servo motor, the active bevel gear rotates along the positioning seat. When the active bevel gear rotates, it drives the shaft to rotate inside the bushing through the driven bevel gear. When the shaft rotates, it drives the rotating disk to rotate. When the rotating disk rotates, it drives the limiting slip ring to rotate inside the annular groove, which improves the stability of the rotating disk when it rotates. When the rotating disk rotates, it drives six pins to move outward synchronously through six transmission slots. Each pin's movement causes a moving rod to slide outward along the strip groove. The moving rod's movement also causes a slider to slide within the limiting groove, increasing the stability of the moving rods. The outward movement of the six moving rods also drives six hooks to move outward synchronously through the rotating head, thus widening the lifting distance. The operator then hangs the workpiece on the hook. The torsion spring's force causes the stop to rotate along the shaft, blocking the hook's opening and preventing accidental slippage. This allows the nitriding lifting tool to adjust its lifting distance according to the size of the workpiece, preventing large adjacent workpieces from obstructing each other, making it widely applicable. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram: Figure 1 This is a schematic diagram of the nitriding lifting fixture used in the surface treatment process of metal parts according to this utility model; Figure 2 This is a schematic diagram of the internal structure of the nitriding lifting tool used in the surface treatment process of metal parts according to this utility model; Figure 3 This is a partial structural diagram of the nitriding furnace of this utility model; Figure 4 This is a schematic diagram of the transmission component structure of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the transmission component structure of this utility model. Figure 2 ; Figure 6 This utility model Figure 2 Enlarged structural diagram at point A in the middle; In the diagram: 1. Nitriding furnace; 2. Furnace door; 3. Support base; 4. Servo motor; 5. Hook; 6. Rotating shaft; 7. Torsion spring; 8. Stop; 9. Driving bevel gear; 10. Positioning seat; 11. Driven bevel gear; 12. Shaft; 13. Bushing; 14. Rotating disk; 15. Limiting slip ring; 16. Annular groove; 17. Transmission groove; 18. Pin; 19. Moving rod; 20. Fixed disk; 21. Strip groove; 22. Limiting groove; 23. Slider; 24. Rotating head. Detailed Implementation

[0011] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0012] Depend on Figures 1 to 6 The present invention includes a nitriding furnace 1, with a furnace door 2 hinged to the front of the nitriding furnace 1. One side of the furnace door 2 is fixedly connected to the nitriding furnace 1 by a latch. A servo motor 4 is fixedly installed on one side of the top of the nitriding furnace 1 by a support base 3. The output end of the servo motor 4 is provided with a transmission component. Six hooks 5 are arranged in a ring at equal intervals inside the nitriding furnace 1. A rotating shaft 6 is rotatably installed on the upper end of each hook 5. A stop 8 is fixedly installed between the two ends of each of the six rotating shafts 6. A torsion spring 7 is sleeved on both ends of the surface of each of the six rotating shafts 6. The two ends of the torsion spring 7 are fixedly connected to the stop 8 and the hooks 5 respectively. The transmission component is connected to the six hooks 5 for transmission. When the servo motor 4 is running, it outputs power to the six hooks 5 through the transmission component, so that the six hooks 5 move outward synchronously to expand the lifting distance.

[0013] The operator starts the servo motor 4 to drive the transmission component. When the transmission component is running, it drives the six hooks 5 to move outward synchronously, thereby expanding the lifting distance. Then the operator hangs the workpiece on the hook 5. The spring force of the torsion spring 7 will drive the stop 8 to rotate along the rotating shaft 6, thereby blocking the opening of the hook 5 and preventing the workpiece from accidentally slipping off. This allows the nitriding lifting tool to adjust its lifting distance according to the size of the workpiece, avoiding mutual obstruction between adjacent large workpieces. It has a wide range of applications.

[0014] The transmission assembly includes a drive bevel gear 9, which is fixedly mounted on the output end of the servo motor 4. A positioning seat 10 is rotatably mounted on one side of the drive bevel gear 9. The bottom of the positioning seat 10 is fixedly connected to the top of the nitriding furnace 1. A driven bevel gear 11 is meshed with the lower part of the surface of the drive bevel gear 9. A shaft 12 is fixedly mounted on the bottom of the driven bevel gear 11. The surface of the shaft 12 is rotatably connected to the middle of the top of the nitriding furnace 1 through a bushing 13. The lower end of the shaft 12 extends into the interior of the nitriding furnace 1 and is fixedly mounted on a rotating disk 14. A limiting slip ring 15 is fixedly mounted on the circumferential surface of the rotating disk 14. An annular groove 16 is opened on the upper part of the inner wall of the nitriding furnace 1. The limiting slip ring 15 is slidably mounted inside the annular groove 16.

[0015] The operator starts the servo motor 4 to drive the active bevel gear 9 to rotate along the positioning seat 10. When the active bevel gear 9 rotates, it drives the shaft 12 to rotate inside the bushing 13 through the driven bevel gear 11. When the shaft 12 rotates, it drives the rotating disk 14 to rotate. When the rotating disk 14 rotates, it drives the limiting slip ring 15 to rotate inside the annular slide groove 16, which improves the stability of the rotating disk 14 when it rotates.

[0016] The surface of the rotating disk 14 is provided with six transmission grooves 17 at equal intervals. Each transmission groove 17 is provided with a pin 18. The bottom end of each pin 18 is fixedly installed with a moving rod 19. The upper part of the nitriding furnace 1 is fixedly installed with a fixed disk 20. The surface of the fixed disk 20 is provided with six strip grooves 21 at equal intervals. Each side of each strip groove 21 is provided with a limit groove 22. The six moving rods 19 are inserted into the six strip grooves 21. Each surface of each moving rod 19 is fixedly installed with a slider 23. Each side of each slider 23 is slidably installed in the corresponding limit groove 22. The bottom end of each moving rod 19 is rotatably connected to six hooks 5 through a rotating head 24.

[0017] When the rotating disk 14 rotates, it drives the six pins 18 to move outward synchronously through the six transmission grooves 17. When the six pins 18 move, they all drive the moving rods 19 to move outward along the strip groove 21. When the moving rods 19 move, they all drive the sliders 23 to slide inside the limiting groove 22, which increases the stability of the six moving rods 19 when they move. When the six moving rods 19 move outward, they all drive the six hooks 5 to move outward synchronously through the rotating head 24, thereby expanding the lifting distance.

Claims

1. A nitriding hoist for a metal piece surface treatment process, comprising a nitriding furnace (1), characterized in that: The front of the nitriding furnace (1) is hinged with a furnace door (2), and one side of the furnace door (2) is fixedly connected to the nitriding furnace (1) by a latch. A servo motor (4) is fixedly installed on one side of the top of the nitriding furnace (1) by a support base (3). The output end of the servo motor (4) is provided with a transmission component. Six hooks (5) are arranged in a ring at equal intervals inside the nitriding furnace (1). A rotating shaft (6) is rotatably installed on the upper end of each hook (5). A baffle (8) is fixedly installed between the two ends of each of the six rotating shafts (6). A torsion spring (7) is sleeved on both ends of the surface of each of the six rotating shafts (6). The two ends of the torsion spring (7) are fixedly connected to the baffle (8) and the hook (5) respectively. The transmission component is connected to the six hooks (5) for transmission. When the servo motor (4) is running, it outputs power to the six hooks (5) through the transmission component, so that the six hooks (5) move outward synchronously to expand the lifting distance.

2. The nitriding hanger for a metal surface treatment process according to claim 1, characterized in that: The transmission assembly includes an active bevel gear (9), which is fixedly installed at the output end of the servo motor (4). A positioning seat (10) is rotatably installed on one side of the active bevel gear (9). The bottom of the positioning seat (10) is fixedly connected to the top of the nitriding furnace (1). A driven bevel gear (11) is meshed with the lower part of the surface of the active bevel gear (9). A shaft (12) is fixedly installed at the bottom of the driven bevel gear (11). The surface of the shaft (12) is rotatably connected to the middle part of the top of the nitriding furnace (1) through a bushing (13). The lower end of the shaft (12) extends into the interior of the nitriding furnace (1) and is fixedly installed with a rotating disk (14).

3. The nitriding hanger for a metal surface treatment process according to claim 2, characterized in that: A limiting slip ring (15) is fixedly installed on the circumferential surface of the rotating disk (14), and an annular groove (16) is provided on the upper part of the inner wall of the nitriding furnace (1). The limiting slip ring (15) is slidably installed inside the annular groove (16).

4. The nitriding hanger for a metal surface treatment process according to claim 2, characterized by: The rotating disk (14) has six transmission grooves (17) evenly spaced on its surface. Each transmission groove (17) has a pin (18) inserted inside. Each pin (18) has a moving rod (19) fixedly installed at its bottom end. A fixed disk (20) is fixedly installed on the upper part of the nitriding furnace (1). The fixed disk (20) has six strip grooves (21) evenly spaced on its surface. Each of the six strip grooves (21) has a limit groove (22) on both sides. The six moving rods (19) are inserted inside the six strip grooves (21). Each of the six moving rods (19) has a slider (23) fixedly installed on its surface. Each of the six sliders (23) is slidably installed in the corresponding limit groove (22) on both sides. The bottom ends of the six moving rods (19) are rotatably connected to the six hooks (5) through a rotating head (24).

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