Vacuum melting furnace charging lifting mechanism

Abstract

The application relates to a vacuum smelting furnace feeding lifting mechanism, which comprises a feeding chamber and a lifting device arranged at the upper end in the feeding chamber. The lifting device comprises an electric hoist, the electric hoist is provided with a chain, the end of the chain is provided with a hook, the inner side wall of the feeding chamber is provided with a rectangular frame, the rectangular frame is internally provided with a horizontally-sliding mounting rack, the front end of the mounting rack is provided with a guide plate, the outer side of the rectangular frame is provided with a horizontal moving mechanism for driving the mounting rack to horizontally move, the guide plate is provided with a through hole for the chain to pass through, and the hook is located below the guide plate. Through the combined motion of horizontal movement and vertical lifting, the hook is actively deviated from the position directly below the lifting lug, and manual pulling of the inclined hook is not needed.

Description

Technical Field

[0001] This utility model relates to the field of furnace feeding technology, and in particular to a vacuum furnace feeding and lifting mechanism. Background Technology

[0002] In existing vacuum melting furnaces, a lifting mechanism is required to switch between the charging chamber and the melting chamber. For example, existing patent CN209355693U discloses an upper charging device for a vacuum melting furnace, in which the lifting mechanism uses a motor-driven reel chain hook. When using this device, firstly, the charging bucket carrying the material is placed and positioned in the charging chamber via the charging swing arm; then, the lifting mechanism drives the hook to descend and hook onto the lifting lug on the upper part of the charging bucket; after charging is completed, the lifting mechanism needs to drive the hook again to lift the charging bucket and suspend its lifting lug back onto the charging swing arm; finally, the hook needs to be disengaged from the lifting lug.

[0003] However, the hook can only move vertically. When unhooking is required after feeding (with the feeding cylinder suspended behind the feeding boom), this limitation prevents direct unhooking: the hook must first be lowered away from the lifting lug, then manually pulled at an angle, and finally moved upwards at an angle to complete the unhooking. This process relies on manual outward pulling to complete the unhooking, which is cumbersome and significantly increases the labor intensity of workers. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a feeding and lifting mechanism for a vacuum melting furnace.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a vacuum melting furnace feeding and lifting mechanism, including a feeding chamber and a lifting device set at the upper end of the feeding chamber. The lifting device includes an electric hoist with a chain and a hook at the end of the chain. A rectangular frame is provided on the inner side wall of the feeding chamber. A mounting frame is provided horizontally within the rectangular frame. A guide plate is provided at the front end of the mounting frame. A horizontal moving mechanism for driving the mounting frame to move horizontally is provided on the outer side of the rectangular frame. A through hole for the chain to pass through is provided on the guide plate. The hook is located below the guide plate.

[0006] Furthermore, the chain is composed of multiple links connected together, and the through hole is a cross-shaped through hole that slides with the link.

[0007] Furthermore, the cross-shaped through hole is composed of two intersecting waist-shaped through grooves.

[0008] Furthermore, the chain runs through the electric hoist and is located inside the electric hoist, with one end of the chain connected to the mounting frame and the hook located at the other end of the chain.

[0009] Furthermore, the mounting bracket is provided with rollers on both sides for rotation, and the rectangular frame is provided with sliding grooves on the left and right sides respectively to cooperate with the rollers in rolling.

[0010] Furthermore, the horizontal moving mechanism includes a cylinder disposed at the rear end of the rectangular frame, the piston rod of the cylinder passing through the rectangular frame and its end connected to the mounting bracket.

[0011] Furthermore, the rectangular frame has a connecting plate at its front end, which is located on the side wall of the feeding chamber.

[0012] Furthermore, the hook includes a hook shank and a bent hook, with a groove at the upper end of the hook shank, and a connecting rod passing through the chain link at the end of the chain is provided in the groove.

[0013] Furthermore, a stop bar is provided through the hook handle.

[0014] The beneficial effects of this application are as follows: 1. This application drives the installation frame to move horizontally through a horizontal moving mechanism, and controls the vertical lifting and lowering of the hook through an electric hoist. When the hook is unhooked, the hook actively deviates from directly below the lifting lug (forming an inclined trajectory) through the combined motion of horizontal movement and vertical lifting and lowering, eliminating the need for manual tilting of the hook.

[0015] 2. The cross-shaped through hole can restrict the rotation or offset of the chain 4 within the cross-shaped through hole, so that the chain moves only in the vertical direction and eliminates hook swing.

[0016] 3. The rolling friction of the rollers in the groove is much lower than that of traditional sliders, reducing wear and extending the life of the mechanism. Attached Figure Description

[0017] Figure 1 This is the first axonometric view of the present invention.

[0018] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is the second axonometric view of the present invention.

[0020] Figure 4 This is a structural schematic diagram of the hook of this utility model.

[0021] Illustration markings: 1. Cylinder, 2. Rectangular frame, 21. Slide groove, 22. Connecting plate, 3. Mounting bracket, 31. Roller, 4. Chain, 41. Chain link, 5. Electric hoist, 6. Guide plate, 61. Cross-shaped through hole, 7. Hook, 71. Hook handle, 72. Bent hook, 73. Groove, 74. Connecting rod, 8. Stop bar. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please see Figure 1-4 This utility model provides a vacuum melting furnace charging and lifting mechanism, including a charging chamber and a lifting device set at the upper end of the charging chamber. The lifting device includes an electric hoist 5, which has a chain 4. The end of the chain 4 is provided with a hook 7. A rectangular frame 2 is provided on the inner side wall of the charging chamber. A mounting frame 3 is provided horizontally and slidably inside the rectangular frame 2. A guide plate 6 is provided at the front end of the mounting frame 3. A horizontal moving mechanism for driving the mounting frame 3 to move horizontally is provided on the outer side of the rectangular frame 2. A through hole is provided on the guide plate 6 for the chain 4 to pass through. The hook 7 is located below the guide plate 6.

[0024] The chain 4 is composed of multiple links 41 strung together, and the through hole is a cross-shaped through hole 61 that slides with the links 41. The cross-shaped through hole 61 consists of two mutually perpendicular intersecting waist-shaped through slots. The cross-shaped through hole 61 can restrict the rotation or displacement of the chain 4 within the cross-shaped through hole 61, thereby ensuring that the movement is only in the vertical direction and eliminating the swing of the hook 7. It should be noted that the parts not described in detail in this application are all prior art.

[0025] Specifically, chain 4 passes through the electric hoist 5 and is located inside the electric hoist 5. One end of chain 4 is connected to the mounting frame 3, and hook 7 is located at the other end of chain 4. Existing electric hoists 5 generally have a chain structure for extension and retraction, and the chain 4 passing through the electric hoist 5 is the chain 4 that is extended and retracted by the electric hoist 5. Rollers 31 are rotatably provided on both sides of the mounting frame 3, and grooves 21 are provided on the left and right sides of the rectangular frame 2 to roll and cooperate with the rollers 31. The rolling friction of the rollers 31 in the grooves 21 is much lower than that of traditional slider friction, reducing wear and extending the service life of the mechanism.

[0026] More specifically, the horizontal movement mechanism includes a cylinder 1 located at the rear end of the rectangular frame 2, with the piston rod of the cylinder 1 passing through the rectangular frame 2 and its end connected to the mounting bracket 3. A connecting plate 22 is provided at the front end of the rectangular frame 2, and the connecting plate 22 is disposed on the side wall of the feeding chamber. The connecting plate 22 is bolted to the side wall of the feeding chamber.

[0027] In addition, the hook 7 includes a hook shank 71 and a hook 72. The upper end of the hook shank 71 is provided with a groove 73, and a connecting rod 74, which is a bolt, passes through the end link 41 of the chain 4. The portion of the chain 4 with the link 41 facing the hook 7 is located in the groove 73.

[0028] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.

[0029] For example, in other embodiments, unlike the embodiments described above, a stop bar 8 is provided through the hook handle 71.

[0030] For example, in other embodiments, unlike the embodiments described above, cylinder 1 is located on the outer side wall of the feeding chamber.

[0031] The working principle of this application is as follows: When hooking, the electric hoist 5 releases the chain 4, and the hook 7 descends vertically along the cross-shaped through hole 61 of the guide plate 6. The hook 7 descends to the lifting lug position, and the hook 72 of the hook handle 71 hooks the lifting lug of the feeding cylinder. The electric hoist 5 winds up the chain 4, and the hook 7 vertically lifts the feeding cylinder to the set height.

[0032] During unhooking, the electric hoist 5 controls the chain 4 to descend, suspending the feeding cylinder lug at the preset position of the feeding swing arm. The chain 4 then continues to descend, disengaging from the feeding cylinder lug. Next, the cylinder 1 pulls the mounting bracket 3 horizontally backward, causing the guide plate 6 and chain 4 to move backward as a whole. Because the chain 4 passes through the cross-shaped through-hole 61 of the guide plate 6, the horizontal backward movement forces the chain 4 to change from a vertical to a backward-tilted state. The electric hoist 5 then controls the chain 4 to rise. At this time, the tilted chain 4 pulls the hook 7 to shift backward and upward, causing the hook 72 to naturally disengage from the lug, completing the unhooking process. This eliminates the need for manual tilting of the hook, reducing the labor intensity for workers.

[0033] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A charging and lifting mechanism for a vacuum melting furnace, comprising a charging chamber and a lifting device disposed at the upper end of the charging chamber, characterized in that, The lifting device includes an electric hoist (5), which has a chain (4). The end of the chain (4) is provided with a hook (7). A rectangular frame (2) is provided on the side wall of the feeding chamber. A horizontally sliding mounting bracket (3) is provided inside the rectangular frame (2). A guide plate (6) is provided at the front end of the mounting bracket (3). A horizontal moving mechanism for driving the mounting bracket (3) to move horizontally is provided on the outside of the rectangular frame (2). A through hole for the chain (4) to pass through is provided on the guide plate (6). The hook (7) is located below the guide plate (6).

2. The vacuum melting furnace feeding and lifting mechanism according to claim 1, characterized in that, The chain (4) is made up of multiple links (41) connected together, and the through hole is a cross-shaped through hole (61) that slides with the link (41).

3. The vacuum melting furnace feeding and lifting mechanism according to claim 2, characterized in that, The cross-shaped through hole (61) is composed of two intersecting waist-shaped through grooves.

4. The vacuum melting furnace feeding and lifting mechanism according to claim 1, characterized in that, The chain (4) passes through the electric hoist (5) and is located inside the electric hoist (5). One end of the chain (4) is connected to the mounting frame (3), and the hook (7) is located at the other end of the chain (4).

5. The vacuum melting furnace feeding and lifting mechanism according to claim 1, characterized in that, The mounting bracket (3) has rollers (31) rotating on both sides, and the rectangular frame (2) has grooves (21) on the left and right sides respectively that are in rolling cooperation with the rollers (31).

6. The vacuum melting furnace feeding and lifting mechanism according to claim 5, characterized in that, The horizontal moving mechanism includes a cylinder (1) located at the rear end of the rectangular frame (2), the piston rod of the cylinder (1) passing through the rectangular frame (2) and the end of the cylinder (1) being connected to the mounting bracket (3).

7. The vacuum melting furnace feeding and lifting mechanism according to claim 6, characterized in that, The rectangular frame (2) has a connecting plate (22) at its front end, and the connecting plate (22) is set on the side wall of the feeding chamber.

8. The vacuum melting furnace feeding and lifting mechanism according to claim 2, characterized in that, The hook (7) includes a hook handle (71) and a hook (72). The upper end of the hook handle (71) is provided with a groove (73), and a connecting rod (74) passing through the end link (41) of the chain (4) is provided in the groove (73).

9. The vacuum melting furnace feeding and lifting mechanism according to claim 8, characterized in that, A stop bar (8) is provided through the hook handle (71).

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