Nitriding furnace cover lifting device

Abstract

A nitriding furnace hood lifting device belongs to the technical field of lifting equipment and comprises a moving frame, eight switching blocks are fixedly mounted on the upper surface of the moving frame, a lifting rope winding roller is rotatably mounted between every two adjacent switching blocks on the inner side and the outer side, and lifting ropes are fixedly connected to the outer surfaces of the lifting rope winding rollers. The ends, away from the lifting rope winding rollers, of the lifting ropes are fixedly connected with anti-disengaging lifting hooks, a synchronous driving mechanism used for synchronously driving the four lifting rope winding rollers to rotate is fixedly installed on the upper surface of the moving frame, and lateral positioning mechanisms are fixedly installed on the left side and the right side of the moving frame. The two lateral positioning mechanisms are used in cooperation to support and position the nitriding furnace cover in the lifting process, under the action of the idler wheels, it can be ensured that the furnace cover can stably move in the vertical direction, and the technical problem that when an existing lifting device lifts the furnace cover, the furnace cover is prone to shaking, and then the transportation stability is affected is solved.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, specifically relating to a hoisting device for a nitriding furnace cover. Background Technology

[0002] A plasma furnace, a heating device that uses plasma energy generated by electricity to perform melting or heating functions, consists of a furnace hood and a base, which are connected by a furnace hood flange. After the plasma furnace completes the reaction, the furnace hood needs to be moved to open the furnace body.

[0003] Given the large size of plasma furnaces, traditional furnace cover handling operations lack dedicated equipment, and the opening and closing of the furnace cover relies entirely on lifting equipment. During lifting, the furnace cover is suspended in the air, and its movement and lowering are achieved manually. This method of handling causes the furnace cover to sway in the air, which is not only time-consuming and labor-intensive, but also makes it difficult to position the furnace cover, easily leading to problems such as the furnace cover being placed crookedly and workpieces being knocked over during handling. Utility Model Content

[0004] To address the problem of furnace hood swaying during lifting operations in existing hoisting equipment, which affects transportation stability, this invention provides a nitriding furnace hood hoisting device. By installing lateral positioning mechanisms on both sides of the moving frame, the H-shaped moving frame within these mechanisms clamps and positions the furnace hood during hoisting, preventing swaying. Rollers further ensure the furnace hood can move vertically and normally, effectively solving the problem of furnace hood swaying during transport in existing hoisting equipment. The specific technical solution is as follows:

[0005] A nitriding furnace hood lifting device includes a movable frame. Eight transition blocks are fixedly installed on the upper surface of the movable frame. A lifting rope roller is rotatably installed between two adjacent transition blocks on the inner and outer sides. Lifting ropes are fixedly connected to the outer surfaces of the lifting rope rollers. Anti-detachment hooks are fixedly connected to the ends of the lifting ropes away from the lifting rope rollers. A synchronous drive mechanism for synchronously driving the four lifting rope rollers to rotate is fixedly installed on the upper surface of the movable frame. Lateral positioning mechanisms are fixedly installed on the left and right sides of the movable frame. The two lateral positioning mechanisms work together to support and position the nitriding furnace hood during the lifting process.

[0006] In the above technical solution, the synchronous drive mechanism includes a dual-output motor and four sprockets. The inner ends of the two front rope winding rollers are fixedly connected to the two output ends of the dual-output motor, and the four sprockets are respectively sleeved on the outer surface of the inner ends of the four rope winding rollers. A transmission chain is installed between the front and rear sprockets.

[0007] In the above technical solution, the lateral positioning mechanism includes a U-shaped frame, which is fixedly installed on the side surface of the movable frame. A threaded rod is rotatably installed between the U-shaped frame and the side surface of the movable frame. An H-shaped movable frame is screwed onto the outer surface of the threaded rod. The left and right ends of the H-shaped movable frame pass through the movable frame and the U-shaped frame, respectively. Two mounting slots are symmetrically opened on the side of the H-shaped movable frame near the movable frame, and rollers are rotatably installed in each mounting slot.

[0008] In the above technical solution, a handwheel is fixedly installed at the end of the threaded rod away from the movable frame.

[0009] In the above technical solution, the roller is a rubber roller.

[0010] In the above technical solution, the hoisting rope is a steel wire hoisting rope.

[0011] The nitriding furnace hood lifting device of this utility model has the following advantages compared with the prior art:

[0012] I. This utility model, by configuring lateral positioning mechanisms on both sides of the movable frame, enables the H-shaped movable frame within the two lateral positioning mechanisms to clamp and position the furnace hood during hoisting operations, effectively preventing swaying of the furnace hood during transport. Simultaneously, the rollers ensure stable vertical movement of the furnace hood, solving the technical problem of furnace hood swaying during transport and affecting transport stability in existing hoisting equipment.

[0013] Second, by setting up a synchronous drive mechanism, this utility model can use the dual-output motor in the synchronous drive mechanism to drive the two front rope winding rollers to rotate, and use the cooperation of the sprocket and the transmission chain to drive the two rear rope winding rollers to rotate, so as to realize the use of one motor to drive four rope winding rollers to wind up or unwind the rope, effectively saving the overall manufacturing cost of the lifting device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a magnified view of the local structure at point a in the figure.

[0017] Figure 4 This is a schematic diagram of the H-shaped movable frame structure of this utility model.

[0018] Figures 1-4The components include: 1. Movable frame; 11. Adapter block; 2. Lifting rope reel; 3. Lifting rope; 31. Anti-detachment hook; 4. Synchronous drive mechanism; 41. Dual-output motor; 42. Sprocket; 43. Transmission chain; 5. Lateral positioning mechanism; 51. U-shaped frame; 52. Threaded rod; 53. H-shaped movable frame; 531. Mounting slot; 54. Roller. Detailed Implementation

[0019] 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.

[0020] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-4 This utility model provides a technical solution:

[0021] A nitriding furnace cover lifting device includes a movable frame 1. Eight transition blocks 11 are fixedly installed on the upper surface of the movable frame 1. A lifting rope roller 2 is rotatably installed between two adjacent transition blocks 11 on the inner and outer sides. Lifting ropes 3 are fixedly connected to the outer surface of the lifting rope roller 2. The lifting ropes 3 are steel wire ropes. An anti-detachment hook 31 is fixedly connected to the end of the lifting rope 3 away from the lifting rope roller 2. A synchronous drive mechanism 4 for synchronously driving the four lifting rope rollers 2 to rotate is fixedly installed on the upper surface of the movable frame 1. Lateral positioning mechanisms 5 are fixedly installed on the left and right sides of the movable frame 1. The two lateral positioning mechanisms 5 are used in conjunction to support and position the nitriding furnace cover during the lifting process.

[0022] It should be noted that, as Figure 3 As shown, the synchronous drive mechanism 4 includes a dual-output motor 41 and four sprockets 42. The inner ends of the two front rope winding rollers 2 are fixedly connected to the two output ends of the dual-output motor 41, respectively. The four sprockets 42 are respectively sleeved on the outer surface of the inner ends of the four rope winding rollers 2, and a transmission chain 43 is installed between the front and rear sprockets 42. When the dual-output motor 41 is a forward and reverse motor, it can synchronously drive the four rope winding rollers 2 to achieve the winding or unwinding action of the rope 3 by rotating forward or in reverse, using the cooperation of the sprockets 42 and the transmission chain 43.

[0023] Combination Figure 2 and Figure 4As shown, the lateral positioning mechanism 5 includes a U-shaped frame 51, which is fixedly installed on the side surface of the movable frame 1. A threaded rod 52 is rotatably installed between the U-shaped frame 51 and the side surface of the movable frame 1. A handwheel is fixedly installed at the end of the threaded rod 52 away from the movable frame 1. An H-shaped movable frame 53 is screwed onto the outer surface of the threaded rod 52. The left and right ends of the H-shaped movable frame 53 pass through the movable frame 1 and the U-shaped frame 51, respectively. Two mounting slots 531 are symmetrically opened on the side of the H-shaped movable frame 53 closest to the movable frame 1. Rollers 54 are rotatably installed in each mounting slot 531. 4 is a rubber roller. The threaded rod 52 can rotate between the U-shaped frame 51 and the moving frame 1 through the handwheel. When the threaded rod 52 rotates forward or backward, it can drive the H-shaped moving frame 53 to move towards or away from the moving frame 1, thereby driving the roller 54 to move closer to or away from the furnace hood. When the rollers 54 on both sides of the furnace hood are in contact with it, the four rollers 54 can clamp and position the furnace hood around its perimeter without affecting the vertical movement of the furnace hood, thereby preventing it from shaking during the lifting and transportation process and enhancing the stability of the hoisting machine during the lifting process.

[0024] Working principle: In use, the moving frame 1 is moved above the furnace hood. Then, the synchronous drive mechanism 4 drives the rope winding roller 2 to release the rope, and the anti-detachment hook 31 at the end of the rope 3 is moved down to the hanging ring position of the furnace hood. The anti-detachment hook 31 is then hooked onto the hanging ring of the furnace hood. Then, the synchronous drive mechanism 4 drives the rope winding roller 2 to rewind, and the furnace hood is lifted by the rope 3. When the furnace hood is lifted slightly above the roller 54, the threaded rods 52 on both sides are rotated, and the roller 54 is driven to approach the furnace hood and fit against it through the H-shaped movable frame 53. At this time, the furnace hood is clamped and positioned by the H-shaped movable frame 53 and the roller 54 from four different directions. At this time, the furnace hood can be kept stable by continuing to lift the furnace hood with the rope 3. When the furnace hood is completely separated from the furnace body, the furnace hood can be transported to another location by transferring the moving frame 1. Compared with the furnace hood lifting device in the prior art, this furnace hood lifting device is more stable and has a lower manufacturing cost.

Claims

1. A hoisting device for a nitriding furnace hood, comprising a movable frame (1), characterized in that, Eight adapter blocks (11) are fixedly installed on the upper surface of the mobile frame (1). A rope roller (2) is rotatably installed between two adjacent adapter blocks (11) on the inner and outer sides. A rope (3) is fixedly connected to the outer surface of the rope roller (2). An anti-detachment hook (31) is fixedly connected to the end of the rope (3) away from the rope roller (2). A synchronous drive mechanism (4) for synchronously driving the four rope rollers (2) to rotate is fixedly installed on the upper surface of the mobile frame (1). A lateral positioning mechanism (5) is fixedly installed on the left and right sides of the mobile frame (1). The two lateral positioning mechanisms (5) are used in conjunction to support and position the nitriding furnace cover during the lifting process.

2. The nitriding furnace hood lifting device according to claim 1, characterized in that, The synchronous drive mechanism (4) includes a dual-output motor (41) and four sprockets (42). The inner ends of the two front rope winding rollers (2) are fixedly connected to the two output ends of the dual-output motor (41). The four sprockets (42) are respectively sleeved on the outer surface of the inner ends of the four rope winding rollers (2), and a transmission chain (43) is installed between the front and rear sprockets (42).

3. The nitriding furnace hood lifting device according to claim 1, characterized in that, The lateral positioning mechanism (5) includes a U-shaped frame (51), which is fixedly installed on the side surface of the movable frame (1). A threaded rod (52) is rotatably installed between the U-shaped frame (51) and the side surface of the movable frame (1). An H-shaped movable frame (53) is screwed onto the outer surface of the threaded rod (52). The left and right ends of the H-shaped movable frame (53) pass through the movable frame (1) and the U-shaped frame (51) respectively. Two mounting slots (531) are symmetrically opened on the side of the H-shaped movable frame (53) close to the movable frame (1). Rollers (54) are rotatably installed in each mounting slot (531).

4. The nitriding furnace hood lifting device according to claim 3, characterized in that, A handwheel is fixedly installed at the end of the threaded rod (52) away from the movable frame (1).

5. A nitriding furnace hood lifting device according to claim 3, characterized in that, The roller (54) is a rubber roller.

6. A nitriding furnace hood lifting device according to claim 1, characterized in that, The hoisting rope (3) is a steel wire hoisting rope.

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