Lifting appliance for lifting metal blanks

Abstract

The utility model discloses a lifting appliance for lifting metal blanks, which relates to the technical field of lifting appliances and comprises an electromagnetic chuck, a mounting seat is arranged on the side wall of the electromagnetic chuck, a first rod body and a second rod body are rotatably connected onto the mounting seat, and the distance between the lower ends of the first rod body and the second rod body is larger than that between the upper ends of the first rod body and the second rod body. The lower end of the first rod body is rotationally connected with a first disc body, the lower end of the second rod body is rotationally connected with a second disc body, an opening of the first disc body and an opening of the second disc body are both arranged downwards, wiping pieces are arranged in the first disc body and the second disc body, and the side wall of the first disc body abuts against and is matched with the side wall of the second disc body. According to the utility model, the adsorption reliability of the electromagnetic chuck to the metal blank can be improved, and the hoisting safety can be improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to a lifting equipment for lifting metal billets. Background Technology

[0002] When processing ring forgings, firstly, the long cylindrical metal bar needs to be sent to a sawing machine to be cut into sections to obtain short cylindrical metal billets. Then, the metal billets are hoisted to a heating furnace for heating. The heated metal billets are then subjected to forging, ring rolling, and finishing processes in sequence.

[0003] Metal billets are obtained by sawing metal bars. During the sawing process, coolant is sprayed onto the surface of the metal billet, and metal debris remains on the surface. Currently, electromagnetic chucks are used to lift metal billets. The electromagnetic chucks are attached to hooks suspended from an overhead crane, and they attract and hold the metal billets.

[0004] Because the surface of the metal billet is covered with coolant and metal debris, coolant and metal debris are trapped between the electromagnetic chuck and the top surface of the metal billet. This prevents the electromagnetic chuck from adhering tightly to the metal billet, reducing the reliability of the electromagnetic chuck's adsorption of the metal billet and increasing the probability of the metal billet detaching from the electromagnetic chuck, thus reducing the safety of lifting.

[0005] Therefore, how to improve the reliability of electromagnetic chucks in adsorbing metal billets in order to improve lifting safety is a technical problem that needs to be solved. Utility Model Content

[0006] This invention addresses the aforementioned shortcomings of existing technologies by proposing a lifting device for transporting metal billets. This invention improves the reliability of electromagnetic chuck adsorption of metal billets, thereby enhancing lifting safety.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A lifting device for transporting metal billets includes an electromagnetic chuck. The side wall of the electromagnetic chuck is provided with a mounting base. A first rod and a second rod are rotatably connected to the mounting base. The distance between the lower ends of the first rod and the second rod is greater than the distance between their upper ends. A first disc is rotatably connected to the lower end of the first rod, and a second disc is rotatably connected to the lower end of the second rod. The openings of the first disc and the second disc are both oriented downwards. Wiping components are installed inside both the first disc and the second disc. The side walls of the first disc and the second disc abut against each other.

[0009] Furthermore, the mounting base is provided with mounting holes, and the side wall of the electromagnetic chuck is provided with a screw. The screw is inserted into the mounting hole and a nut is threaded onto the screw. The mounting base is clamped between the nut and the side wall of the electromagnetic chuck.

[0010] Furthermore, the wiping element is made of a sponge pad.

[0011] Furthermore, the bottom of the sponge pad has extended protrusions around its perimeter.

[0012] Furthermore, the first disc body has a guide sleeve on its side wall, and the second disc body has a guide rod on its side wall, with the guide rod slidingly engaging with the guide sleeve in the horizontal direction.

[0013] Furthermore, the upper part of the first rod is connected to the upper part of the second rod via an elastic element.

[0014] Furthermore, the upper part of the first rod is provided with a first hook, the upper part of the second rod is provided with a second hook, the elastic element is a spring, one end of the spring is provided with a first ring body, the first ring body is hung on the first hook, and the other end of the spring is provided with a second ring body, the second ring body is hung on the second hook.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this invention, when using an electromagnetic chuck to lift metal billets, as the chuck approaches the billet, the first and second chuck bodies move away from each other. The wiping components housed within these bodies slide on the top surface of the metal billet, effectively cleaning it. Simultaneously with the wiping, the electromagnetic chuck contacts the top surface of the billet and lifts it. Compared to the prior art, this invention's electromagnetic chuck does not trap coolant or metal debris when lifting metal billets, thus improving the reliability of the chuck's adhesion and consequently enhancing lifting safety.

[0017] 2. In this invention, the structure of the first rod, second rod, first disc, second disc, and wiping component works in harmony, allowing for corresponding actions based on the distance between the electromagnetic chuck and the metal blank to be adsorbed. When the electromagnetic chuck approaches the metal blank, the wiping component inside the first and second discs wipes the top surface of the metal blank; when the electromagnetic chuck moves away from the metal blank, the first and second discs gradually return to their initial state. This makes the wiping structure of this invention simple and reliable. Furthermore, it eliminates the need for other power sources, thus saving energy.

[0018] 3. When the side walls of the first and second discs abut against each other, the extended protrusions on the sponge pads inside the first and second discs also abut against each other, so that there is no gap between the sponge pads inside the first and second discs. As a result, when the sponge pads wipe the top surface of the metal billet, there are no dead corners to wipe, which can improve the wiping effect on the metal billet.

[0019] 4. The guide rod and guide sleeve ensure that the first and second discs maintain a horizontal posture as they approach or move away from each other. This allows the sponge pads inside both discs to always face the metal billet, ensuring full contact between the bottom surface of the sponge pads and the top surface of the metal billet. This improves the effectiveness of the sponge pads in wiping the top surface of the metal billet. Consequently, this further enhances the reliability of the electromagnetic chuck's adsorption of the metal billet and improves lifting safety.

[0020] 5. The elastic element allows the first and second discs to reset more quickly to a state where their sidewalls abut each other, which helps improve the reset efficiency.

[0021] 6. The design of the first hook, the second hook, the first ring, and the second ring facilitates the disassembly and assembly of the spring with the first rod and the second rod, making it convenient to replace and maintain the spring and improving ease of use. Attached Figure Description

[0022] Figure 1 A three-dimensional lifting device for transporting metal billets Figure 1 ;

[0023] Figure 2 A three-dimensional lifting device for transporting metal billets Figure 2 ;

[0024] Figure 3 A three-dimensional lifting device for transporting metal billets Figure 3 ;

[0025] Figure 4 It is a three-dimensional diagram of a lifting device for transporting metal billets after the sponge pad has been removed;

[0026] Figure 5 It is a 3D diagram of a sponge pad;

[0027] Figure 6 This is a left view of a lifting device used for transporting metal billets;

[0028] Figure 7 It is a state of a lifting device for transporting metal billets. Figure 1 ;

[0029] Figure 8 It is a state of lifting equipment for transporting metal billets. Figure 2 ;

[0030] Figure 9 It is a state of lifting equipment for transporting metal billets. Figure 3 ;

[0031] Figure 10 It is a state of lifting equipment for transporting metal billets. Figure 4 ;

[0032] Figure 11 This is a perspective view of a lifting device for transporting metal billets, as described in Example 4.

[0033] Figure 12 yes Figure 11 A magnified view of a portion of point A in the middle.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Electromagnetic chuck, 11-Screw, 12-Nut

[0036] 2-Mounting base,

[0037] 3-First rod, 31-First hook,

[0038] 4-Second rod, 41-Second hook,

[0039] 5-First disc body, 51-Guide sleeve,

[0040] 6-Second disc body, 61-Guide rod,

[0041] 7-Sponge pad, 71-Extended boss,

[0042] 8-Spring, 81-First ring, 82-Second ring,

[0043] 9-Metal billet,

[0044] 10-Hook, 101-Rope. Detailed Implementation

[0045] To better understand this utility model, it will be further described below with reference to the accompanying drawings. It is worth noting that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model.

[0046] Example 1:

[0047] See Figure 1 , Figure 2, Figure 3 , Figure 6 A lifting device for lifting metal billets 9 includes an electromagnetic chuck 1, a mounting base 2, a first rod 3, a second rod 4, a first disc 5, a second disc 6, and a wiping component.

[0048] See Figure 3 The electromagnetic chuck 1 has screws 11 welded and fixed to the front and rear side walls of its outer shell, and the mounting base 2 has mounting holes. When assembling the mounting base 2 and the electromagnetic chuck 1, first fit the mounting holes onto the screws 11, and then screw the nuts 12 onto the screws 11 so that the mounting base 2 is clamped between the nuts 12 and the side wall of the outer shell of the electromagnetic chuck 1, thus completing the assembly.

[0049] See Figure 2 A first rod 3 and a second rod 4 are rotatably connected to the mounting base 2. The distance between the lower ends of the first rod 3 and the second rod 4 is greater than the distance between their upper ends. A first disc 5 is rotatably connected to the lower end of the first rod 3, and a second disc 6 is rotatably connected to the lower end of the second rod 4. (See also...) Figure 4 The openings of the first disc 5 and the second disc 6 are both set downwards.

[0050] See Figure 3 The wiping component uses a sponge pad 7. Both the first disc body 5 and the second disc body 6 are equipped with sponge pads 7. The bottom of the sponge pad 7 located in the first disc body 5 is exposed from the opening of the first disc body 5, and the bottom of the sponge pad 7 located in the second disc body 6 is exposed from the opening of the second disc body 6.

[0051] The working principle of this embodiment 1 is as follows:

[0052] (1) Before using the lifting device of this embodiment 1 to lift the metal billet 9: First, pass the rope 101 through the loop at the top of the electromagnetic chuck 1, and tie the two ends of the rope 101 together so that the rope 101 forms a closed loop; then, hook the looped rope 101 with the hook 10 hanging down from the crane.

[0053] (2) The process of using the lifting device of this embodiment 1 to lift the metal billet 9 is as follows:

[0054] S1, see also Figures 7 to 8 As the state changes, the overhead crane releases the hook 10 downwards, causing the electromagnetic chuck 1 to move downwards. The electromagnetic chuck 1 then moves the first disc 5 and the second disc 6 downwards, causing the sponge pads 7 inside the first disc 5 and the second disc 6 to gradually approach the metal billet 9 located on the ground. Figure 8 In the shown state, the sponge pad 7 is just touching the top surface of the metal blank 9. Figures 7 to 8 In this state, the right side wall of the first disc 5 and the left side wall of the second disc 6 are in contact.

[0055] S2, see below. Figure 8 , Figure 9 , Figure 10 As the electromagnetic chuck 1 continues to move downwards, since the sponge pad 7 had already contacted the top surface of the metal billet 9 in step S1, the angle between the first rod 3 and the second rod 4 gradually increases as the electromagnetic chuck 1 continues to move downwards. Driven by the first rod 3 and the second rod 4, the first disc 5 and the second disc 6 move away from each other, causing the sponge pad 7 inside the first disc 5 and the second disc 6 to slide on the top surface of the metal billet 9. This allows the sponge pad 7 to wipe away any remaining metal debris on the top surface of the metal billet 9, and absorb any remaining cooling water on the top surface of the metal billet 9, thus cleaning the top surface of the metal billet 9. Figure 10 In the state shown, the electromagnetic chuck 1 is in contact with the top surface of the metal blank 9, the first disc 5 and the second disc 6 are furthest apart, and the first disc 5 and the second disc 6 are located on both sides of the electromagnetic chuck 1.

[0056] S3. Activate electromagnetic chuck 1. Electromagnetic chuck 1 attracts the metal billet 9. The overhead crane raises electromagnetic chuck 1, causing the metal billet 9 to move upwards. The overhead crane then transfers the metal billet 9 to the target position. When the metal billet 9 reaches the target position, the overhead crane releases electromagnetic chuck 1 downwards, lowering the height of the metal billet 9. When the metal billet 9 reaches the target height, electromagnetic chuck 1 releases its attraction to the metal billet 9, causing the metal billet 9 to detach from electromagnetic chuck 1.

[0057] S4. The electromagnetic chuck 1 moves upward away from the metal billet 9. The electromagnetic chuck 1 drives the first disc 5 and the second disc 6 to move upward together. After the first disc 5 and the second disc 6 have both left the metal billet 9, the first disc 5 and the second disc 6 swing closer under their own gravity, so that the right side wall of the first disc 5 and the left side wall of the second disc 6 re-abut each other, restoring... Figure 7 The state shown.

[0058] Based on the working principle described above in Embodiment 1, it can be seen that Embodiment 1 has the following effects:

[0059] First, the metal billet 9 obtained by sawing the metal bar results in coolant and metal debris adhering to its surface. In this embodiment 1, when using the electromagnetic chuck 1 to lift the metal billet 9, as the electromagnetic chuck 1 approaches the metal billet 9, the first disc 5 and the second disc 6 move away from each other. The wiping components installed in the first disc 5 and the second disc 6 slide on the top surface of the metal billet 9, thus cleaning the top surface of the metal billet 9. Simultaneously with the cleaning of the metal billet 9, the electromagnetic chuck 1 can contact the top surface of the metal billet 9 and lift it by adsorption. Compared with the prior art, in this embodiment 1, the electromagnetic chuck 1 does not trap coolant and metal debris when adsorbing the metal billet 9, which improves the reliability of the electromagnetic chuck 1's adsorption of the metal billet 9, and consequently improves the safety of lifting.

[0060] Second, in this embodiment 1, the structural cooperation of the first rod 3, the second rod 4, the first disc 5, the second disc 6, and the wiping component allows for corresponding actions based on the distance between the electromagnetic chuck 1 and the metal blank 9 to be adsorbed. When the electromagnetic chuck 1 approaches the metal blank 9, the wiping component inside the first disc 5 and the second disc 6 wipes the top surface of the metal blank 9; when the electromagnetic chuck 1 moves away from the metal blank 9, the first disc 5 and the second disc 6 gradually return to their initial state (see...). Figure 7 This makes the wiping structure in Embodiment 1 simple and reliable. Furthermore, it eliminates the need for additional power sources, thus saving energy.

[0061] Example 2:

[0062] When the right side wall of the first disc 5 and the left side wall of the second disc 6 come into contact, there is a gap between the sponge pads 7 inside the first disc 5 and the second disc 6 because both the side walls of the first disc 5 and the second disc 6 have thickness. When the sponge pad 7 contacts the top surface of the metal blank 9, the position of the metal blank 9 corresponding to the gap cannot be wiped by the sponge pad 7, forming a wiping dead corner and reducing the wiping effect of the sponge pad 7 on the metal blank 9.

[0063] In this embodiment 2, see... Figure 5 Extended protrusions 71 are provided around the bottom perimeter of the sponge pad 7, and the extended protrusions 71 are integrally formed with the sponge pad 7. See also Figure 1 The extended protrusions 71 around the sponge pad 7 inside the first disc 5 can cover the lower edge of the first disc 5, and the extended protrusions 71 around the sponge pad 7 inside the second disc 6 can cover the lower edge of the second disc 6.

[0064] When the right side wall of the first disc 5 and the left side wall of the second disc 6 abut together, the extended protrusions 71 on the sponge pads 7 inside the first disc 5 and the second disc 6 also abut together, so that there is no gap between the sponge pads 7 inside the first disc 5 and the second disc 6. As a result, when the sponge pads 7 wipe the top surface of the metal blank 9, there are no dead corners to wipe, which can improve the wiping effect on the metal blank 9.

[0065] Example 3:

[0066] This embodiment 3 is further improved: see [link / reference] Figure 1 and Figure 2 A guide sleeve 51 is welded and fixed to the front side wall of the first disc 5, and a guide rod 61 is welded and fixed to the front side wall of the second disc 6. The guide rod 61 slides and engages with the guide sleeve 51 in the horizontal direction.

[0067] See Figures 8 to 10 As shown in the state change, when the electromagnetic chuck 1 moves down and approaches the metal blank 9, the distance between the first disc 5 and the second disc 6 increases, and relative sliding occurs between the guide rod 61 and the guide sleeve 51. With the constraint of the guide rod 61 and the guide sleeve 51, the first disc 5 and the second disc 6 can maintain a horizontal posture as they move away from each other.

[0068] Conversely, when the electromagnetic chuck 1 moves away from the metal blank 9, the distance between the first disc 5 and the second disc 6 decreases, and the guide rod 61 and the guide sleeve 51 slide relative to each other in opposite directions. With the constraint of the guide rod 61 and the guide sleeve 51, the first disc 5 and the second disc 6 can maintain a horizontal posture as they approach each other, so that the right side wall of the first disc 5 and the left side wall of the second disc 6 can smoothly return to the state of contact.

[0069] By maintaining the horizontal orientation of the first disc 5 and the second disc 6, the sponge pad 7 inside the first disc 5 and the second disc 6 can always face the metal billet 9, allowing the bottom surface of the sponge pad 7 to fully contact the top surface of the metal billet 9. This improves the effectiveness of the sponge pad 7 in wiping the top surface of the metal billet 9. Consequently, it further enhances the reliability of the electromagnetic chuck 1 in adsorbing the metal billet 9 and improves the safety of lifting.

[0070] Example 4:

[0071] This embodiment 4 is an improvement upon embodiment 3:

[0072] The upper part of the first rod 3 is connected to the upper part of the second rod 4 through an elastic element. The elastic force of the elastic element tends to pull the first rod 3 and the second rod 4 closer to each other.

[0073] For details: see Figure 11 and Figure 12A first hook 31 is welded and fixed to the upper part of the first rod 3, and a second hook 41 is welded and fixed to the upper part of the second rod 4. Both the first hook 31 and the second hook 41 are rods formed by bending upwards. The elastic element is a spring 8. One end of the spring 8 is provided with a first ring 81, and the other end of the spring 8 is provided with a second ring 82. The first ring 81, the second ring 82 and the spring 8 are an integral structure. The first ring 81 is hung on the first hook 31, and the second ring 82 is hung on the second hook 41.

[0074] The arrangement of the first hook 31, the second hook 41, the first ring 81, and the second ring 82 facilitates the disassembly and assembly of the spring 8 with the first rod 3 and the second rod 4, making it convenient to replace and maintain the spring 8 and improving ease of use.

[0075] When the electromagnetic chuck 1 moves down and approaches the metal billet 9, the first disc 5 and the second disc 6 move away from each other. The first disc 5 drives the first rod 3 to move together, and the second disc 6 drives the second rod 4 to move together, so that the first rod 3 and the second rod 4 overcome the elastic force of the spring 8 and increase the included angle.

[0076] Conversely, when the electromagnetic chuck 1 moves away from the metal blank 9, the first rod 3 and the second rod 4 swing towards each other under their own gravity, causing the included angle between the first rod 3 and the second rod 4 to decrease. Furthermore, the first rod 3 and the second rod 4 also move closer together under the elastic force of the spring 8, increasing the speed at which the included angle between the first rod 3 and the second rod 4 decreases, thereby increasing the speed at which the right side wall of the first disc 5 and the left side wall of the second disc 6 return to their contact state.

[0077] As can be seen from the above process, the setting of spring 8 allows the first disc 5 and the second disc 6 to return to the state where the side walls of the first disc 5 and the second disc 6 abut against each other more quickly, which is beneficial to improving the reset efficiency.

[0078] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A lifting tool for lifting a metal billet, comprising an electromagnetic chuck, characterized in that, The side wall of the electromagnetic chuck is provided with a mounting seat, a first rod body and a second rod body are rotationally connected to the mounting seat, the distance between the lower ends of the first rod body and the second rod body is greater than the distance between the upper ends of the first rod body and the second rod body, the lower end of the first rod body is rotationally connected with a first disc body, the lower end of the second rod body is rotationally connected with a second disc body, the opening of the first disc body and the opening of the second disc body are both arranged downward, a wiping member is arranged in the first disc body and the second disc body, and the side wall of the first disc body and the side wall of the second disc body are in abutting fit.

2. A lifting device for lifting a metal billet according to claim 1, characterised in that The mounting seat is provided with a mounting hole, the side wall of the electromagnetic chuck is provided with a screw rod, the screw rod is in plug fit with the mounting hole, a nut is threadedly connected to the screw rod, and the mounting seat is clamped between the nut and the side wall of the electromagnetic chuck.

3. A lifting device for lifting metal billets according to claim 1, characterised in that The wiping member is a sponge pad.

4. A lifting device for lifting a metal billet according to claim 3, wherein The sponge pad is provided with an extension boss around the bottom.

5. A lifting tool for lifting a metal billet according to any one of claims 1-4, characterized in that The side wall of the first disc body is provided with a guide sleeve, and the side wall of the second disc body is provided with a guide rod, which is in sliding fit with the guide sleeve in the horizontal direction.

6. A lifting device for lifting a metal billet according to claim 5, wherein The upper portion of the first rod body is connected with the upper portion of the second rod body through an elastic member.

7. A lifting device for lifting a metal billet according to claim 6, wherein The upper portion of the first rod body is provided with a first hook, the upper portion of the second rod body is provided with a second hook, the elastic member is a spring, one end of the spring is provided with a first ring body, the first ring body is hung on the first hook, and the other end of the spring is provided with a second ring body, the second ring body is hung on the second hook.

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